x402 List

x402 Protocol Service Directory

ArkBrowser API

AI PAYMENT-READY

payment-ready until 2026-09-14

ArkBrowser is a browser automation API built for AI agents. Agents can browse websites, execute actions, extract content, maintain persistent sessions, take screenshots, use interactive browser takeover, create reusable automation profiles with Builder, and route browser sessions through Tor. ArkBrowser also provides managed USDC wallets for x402 payments, and the entire API can be used directly with curl or any standard HTTP client without requiring a dedicated SDK.

Pay from $0.001 to $1.50 in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

listed 2026-08-24 · no on-chain settlement recorded yet

BASE URL https://api-arkbrowser.arksystemes.fr WEBSITE https://arkbrowser.arksystemes.fr ENDPOINTS 8 NETWORK Base ASSET USDC MEMBER SINCE 2026-08-24 MONITORED SINCE 2026-08-24

VERDICT

ranking generation 3

solid 89/100 #46 of 103 in AI by measured score

What the score read on this service: status online, 100% uptime 30d, 512ms response p95, x402 compliance 14 of 14, $0.001 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

It is a score inside AI, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 103 listings, this one among them. That set is wider than the 103 the position above is counted against, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

ALTERNATIVES IN AI

Other AI services in this directory, ordered by the same measured score. The figures are ours: 30-day uptime from our own probes, 30-day settlement volume read on-chain (a conservative undercount, and null where we cannot measure it, never a zero).

Ranked alternative x402 services in the same category, with band, measured score, 30-day uptime and 30-day on-chain settlement volume
SERVICE BAND SCORE UPTIME 30D VOL 30D
Otto AI strong 99 100% ---
x402engine strong 99 100% ---
Genesis strong 98 100% ---
Japan Furigana API strong 97 99.1% ---
BridgeNode strong 97 100% ---
5 of 102 other ranked services in AI · see the whole category

ASSESSMENT

updated 5h ago

The parts the verdict above is computed from, each with its proof. Click any chip. Measured values stay read-only; unknown is honest, and an unknown is never counted as a zero.

reliability 100%
uptime 24h
100%
uptime 7d
100%
uptime 30d
100%
uptime 90d
100%
response p95
512ms
avg response
332ms
total checks
1,221

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.001 to $1.50 (p8 in AI)
price (min)
$0.001
price (max)
$1.50
category percentile (min)
p8 in AI
category percentile (max)
p79 in AI
endpoints / prices
8 / 6
model
tiered
stability
100%
risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
1872d
registrar
OVH
hosting
custom
domain created
2021-07-16

Identity facts, not a risk score.

traction $0.00 30d · 0 buyers
volume 30d
$0.00
buyers 30d
0
settlements 30d
0
measured since
--- (start of our harvest window)
last settlement
---
top buyer share
-
trend 7d vs 30d
-
networks
eip155:8453
volume all-time
$0
settlements all-time
0
median settlement 30d
-
max settlement 30d
-
settled via
-

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is a concentration signal, not part of the ranking score.

CHANGES

1 in 30d

Payout, price, and schema changes detected on this service's x402 wire. A payout rotation at an unchanged price shows up here even when nothing else moves. Full feed at /changes.

changes schema changed 13d ago (1 in 30d)

schema changed · 13d ago

endpoint added POST /run

endpoint added POST /screenshot

endpoint added POST /source

endpoint added POST /surf

schema added POST /run exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USDC","version":"2"}

schema added POST /screenshot exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USDC","version":"2"}

schema added POST /source exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USDC","version":"2"}

schema added POST /surf exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USDC","version":"2"}

see all changes for this service

WHAT IT DOES

ai-derived

No AI synthesis has been produced for this service yet.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
POST /builder/start $0.75 Base USDC header
POST /run $0.01 Base USDC header
POST /screenshot $0.015 Base USDC header
POST /session $1.50 Base USDC header
POST /source $0.01 Base USDC header
POST /support $0.001 Base USDC header
POST /surf $0.01 Base USDC header
POST /takeover/start $0.40 Base USDC header
8 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to POST /builder/start returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i -X POST 'https://api-arkbrowser.arksystemes.fr/builder/start'
// 402 response (captured by monitor) · 8 payloads · click to expand
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "payTo": "0xD638487e09c7F9A742EDE94baA928a74E45f1e94",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api-arkbrowser.arksystemes.fr/surf",
      "tags": [
        "temporary-browser",
        "web-extraction",
        "browser-automation",
        "markdown",
        "accessibility"
      ],
      "mimeType": "application/json",
      "description": "Open a public website in a real ArkBrowser browser, execute precise interaction steps, and return rendered page metadata plus optional links, HTML source, Markdown, DOM, and accessibility data. Built for AI web research, browser automation, testing, scraping, and content extraction. Runs temporarily by default or creates a persistent Keep session. The live x402 amount reflects selected outputs and session duration.",
      "serviceName": "ArkBrowser Web Surf"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "url": "https://example.com",
              "include_markdown": true
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "url": "https://example.com/",
              "page": {
                "url": "https://example.com/",
                "lang": "en",
                "title": "Example Domain",
                "charset": "UTF-8",
                "canonical": "https://example.com/",
                "contentType": "text/html",
                "description": "Example domain for documentation."
              },
              "worker": 0,
              "results": [],
              "markdown": {
                "content": "# Example Domain",
                "maxChars": 2000000,
                "extractor": "full-body-v4",
                "truncated": false
              },
              "runtime_id": "rt_0123456789abcdef",
              "access_token": "ark_access_example_token",
              "access_token_type": "Bearer"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "allOf": [
                    {
                      "if": {
                        "required": [
                          "tor_country"
                        ]
                      },
                      "then": {
                        "anyOf": [
                          {
                            "required": [
                              "keep_minutes"
                            ]
                          },
                          {
                            "required": [
                              "keep"
                            ],
                            "properties": {
                              "keep": {
                                "not": {
                                  "const": false
                                }
                              }
                            }
                          }
                        ],
                        "required": [
                          "tor"
                        ],
                        "properties": {
                          "tor": {
                            "const": true
                          }
                        }
                      }
                    }
                  ],
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "required": [
                    "url"
                  ],
                  "properties": {
                    "tor": {
                      "type": "boolean",
                      "default": false,
                      "description": "Route this operation through an isolated Tor runtime. Outside Keep, Tor applies the active one-shot multiplier. During Keep creation, Tor adds the configured Tor per-minute rental."
                    },
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "pattern": "^https?://",
                      "description": "Absolute public HTTP or HTTPS URL to open."
                    },
                    "keep": {
                      "anyOf": [
                        {
                          "type": "boolean",
                          "description": "True selects the minimum and false keeps execution temporary."
                        },
                        {
                          "type": "integer",
                          "minimum": 60,
                          "description": "Requested Keep duration in minutes."
                        }
                      ],
                      "default": false,
                      "description": "Create a persistent Keep session with this first operation. True selects the configured minimum; an integer supplies minutes."
                    },
                    "links": {
                      "type": "boolean",
                      "default": false,
                      "description": "Return links extracted from the rendered page."
                    },
                    "steps": {
                      "type": "array",
                      "items": {
                        "oneOf": [
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "ms"
                            ],
                            "properties": {
                              "ms": {
                                "type": "integer",
                                "minimum": 0,
                                "description": "Delay in milliseconds."
                              },
                              "op": {
                                "type": "string",
                                "const": "wait",
                                "description": "Wait operation."
                              }
                            },
                            "description": "Pause browser execution.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op"
                            ],
                            "properties": {
                              "dx": {
                                "type": "integer",
                                "default": 0,
                                "description": "Horizontal displacement in CSS pixels."
                              },
                              "dy": {
                                "type": "integer",
                                "default": 0,
                                "description": "Vertical displacement in CSS pixels."
                              },
                              "op": {
                                "type": "string",
                                "const": "scroll",
                                "description": "Scroll operation."
                              }
                            },
                            "description": "Scroll the active page.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "sel"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "click_css",
                                "description": "CSS-selector click operation."
                              },
                              "sel": {
                                "type": "string",
                                "minLength": 1,
                                "description": "CSS selector of the element to click."
                              }
                            },
                            "description": "Click the first element matching a CSS selector.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "text"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "click_text",
                                "description": "Visible-text click operation."
                              },
                              "text": {
                                "type": "string",
                                "minLength": 1,
                                "description": "Visible text to locate and click."
                              },
                              "partial": {
                                "type": "boolean",
                                "default": false,
                                "description": "Allow partial instead of exact text matching."
                              }
                            },
                            "description": "Click an element by visible text.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "x",
                              "y"
                            ],
                            "properties": {
                              "x": {
                                "type": "number",
                                "description": "Horizontal viewport coordinate in CSS pixels."
                              },
                              "y": {
                                "type": "number",
                                "description": "Vertical viewport coordinate in CSS pixels."
                              },
                              "op": {
                                "type": "string",
                                "const": "click_xy",
                                "description": "Coordinate click operation."
                              }
                            },
                            "description": "Click viewport coordinates.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "sel",
                              "text"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "type_css",
                                "description": "CSS-selector text entry operation."
                              },
                              "sel": {
                                "type": "string",
                                "minLength": 1,
                                "description": "CSS selector of the target input."
                              },
                              "text": {
                                "type": "string",
                                "description": "Text to enter."
                              }
                            },
                            "description": "Type text into a CSS-selected element.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "key"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "key",
                                "description": "Keyboard operation."
                              },
                              "key": {
                                "type": "string",
                                "minLength": 1,
                                "description": "Key name such as Enter, Escape, Tab, or ArrowDown."
                              }
                            },
                            "description": "Send a keyboard key.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "js"
                            ],
                            "properties": {
                              "js": {
                                "type": "string",
                                "minLength": 1,
                                "description": "JavaScript source evaluated in page context."
                              },
                              "op": {
                                "type": "string",
                                "const": "eval",
                                "description": "JavaScript evaluation operation."
                              }
                            },
                            "description": "Evaluate JavaScript in the page.",
                            "additionalProperties": true
                          }
                        ],
                        "description": "One ordered browser interaction with operation-specific parameters."
                      },
                      "default": [],
                      "description": "Ordered browser interactions executed after navigation."
                    },
                    "worker": {
                      "type": "integer",
                      "minimum": 0,
                      "description": "Zero-based browser worker index. ArkBrowser selects an available worker when omitted."
                    },
                    "include_dom": {
                      "type": "boolean",
                      "default": false,
                      "description": "Return the rendered DOM in the dom field."
                    },
                    "tor_country": {
                      "type": "string",
                      "pattern": "^[A-Za-z]{2}$",
                      "maxLength": 2,
                      "minLength": 2,
                      "description": "Optional ISO 3166-1 alpha-2 Tor exit country used only when creating a Tor Keep session. Change it later with POST /tor/country."
                    },
                    "keep_minutes": {
                      "type": "integer",
                      "minimum": 60,
                      "description": "Create a persistent Keep session for this duration. The minimum follows the active pricing rule."
                    },
                    "include_source": {
                      "type": "boolean",
                      "default": false,
                      "description": "Return rendered HTML in the source field."
                    },
                    "include_markdown": {
                      "type": "boolean",
                      "default": false,
                      "description": "Return full-body Markdown in the markdown field."
                    },
                    "include_accessibility": {
                      "type": "boolean",
                      "default": false,
                      "description": "Return the browser accessibility tree in the accessibility field."
                    }
                  },
                  "description": "Request body accepted by POST /surf.",
                  "additionalProperties": true
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "ok",
                    "runtime_id",
                    "url",
                    "worker",
                    "results"
                  ],
                  "properties": {
                    "ok": {
                      "type": "boolean",
                      "const": true,
                      "description": "Successful browser execution."
                    },
                    "dom": {
                      "anyOf": [
                        {
                          "type": "object"
                        },
                        {
                          "type": "array"
                        },
                        {
                          "type": "string"
                        }
                      ],
                      "description": "Rendered DOM returned when requested."
                    },
                    "tor": {
                      "type": "object",
                      "required": [
                        "enabled",
                        "mode"
                      ],
                      "properties": {
                        "mode": {
                          "enum": [
                            "oneshot",
                            "keep"
                          ],
                          "type": "string",
                          "description": "Tor billing/lifetime mode."
                        },
                        "country": {
                          "anyOf": [
                            {
                              "type": "string",
                              "pattern": "^[A-Z]{2}$"
                            },
                            {
                              "type": "null"
                            }
                          ],
                          "description": "Requested Tor exit country for a Keep session, or null when Tor chooses the exit country."
                        },
                        "enabled": {
                          "type": "boolean",
                          "const": true,
                          "description": "Tor routing is active."
                        }
                      },
                      "description": "Tor routing state returned when Tor is active.",
                      "additionalProperties": true
                    },
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "description": "Final URL loaded by the browser."
                    },
                    "page": {
                      "type": "object",
                      "properties": {
                        "url": {
                          "type": "string",
                          "format": "uri",
                          "description": "Final page URL after redirects."
                        },
                        "lang": {
                          "type": "string",
                          "description": "Document language reported by the page."
                        },
                        "title": {
                          "type": "string",
                          "description": "Rendered document title."
                        },
                        "charset": {
                          "type": "string",
                          "description": "Detected document character encoding."
                        },
                        "canonical": {
                          "type": "string",
                          "format": "uri",
                          "description": "Canonical URL declared by the page."
                        },
                        "contentType": {
                          "type": "string",
                          "description": "Rendered document MIME type."
                        },
                        "description": {
                          "type": "string",
                          "description": "Page meta description."
                        }
                      },
                      "description": "Metadata collected from the rendered page.",
                      "additionalProperties": true
                    },
                    "links": {
                      "type": "array",
                      "items": {
                        "anyOf": [
                          {
                            "type": "string",
                            "format": "uri",
                            "description": "Absolute extracted URL."
                          },
                          {
                            "type": "object",
                            "required": [
                              "url"
                            ],
                            "properties": {
                              "url": {
                                "type": "string",
                                "format": "uri",
                                "description": "Absolute link URL."
                              },
                              "text": {
                                "type": "string",
                                "description": "Visible link text."
                              },
                              "title": {
                                "type": "string",
                                "description": "Optional link title."
                              }
                            },
                            "description": "Structured extracted link.",
                            "additionalProperties": true
                          }
                        ],
                        "description": "Extracted absolute URL or structured link."
                      },
                      "description": "Extracted links when requested."
                    },
                    "bearer": {
                      "type": "string",
                      "pattern": "^ark_keep_",
                      "description": "Opaque ark_keep bearer returned when this request creates Keep."
                    },
                    "source": {
                      "anyOf": [
                        {
                          "type": "string",
                          "description": "Rendered HTML source text."
                        },
                        {
                          "type": "object",
                          "required": [
                            "content",
                            "truncated"
                          ],
                          "properties": {
                            "content": {
                              "type": "string",
                              "description": "Rendered HTML source."
                            },
                            "maxChars": {
                              "type": "integer",
                              "minimum": 1,
                              "description": "Maximum source size in characters."
                            },
                            "truncated": {
                              "type": "boolean",
                              "description": "Whether source was truncated."
                            }
                          },
                          "description": "Bounded rendered HTML extraction.",
                          "additionalProperties": true
                        }
                      ],
                      "description": "Rendered source returned as text or a bounded extraction object."
                    },
                    "worker": {
                      "type": "integer",
                      "minimum": 0,
                      "description": "Zero-based worker used for execution."
                    },
                    "results": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "ok": {
                            "type": "boolean",
                            "description": "Whether the action succeeded."
                          },
                          "op": {
                            "type": "string",
                            "description": "Action operation that was executed."
                          },
                          "error": {
                            "type": "string",
                            "description": "Machine-readable action error."
                          },
                          "result": {
                            "description": "Operation-specific result value."
                          }
                        },
                        "description": "Result of one browser action.",
                        "additionalProperties": true
                      },
                      "description": "Ordered browser-action results."
                    },
                    "session": {
                      "type": "object",
                      "required": [
                        "keep",
                        "session_id",
                        "runtime_id",
                        "node_id",
                        "duration_minutes",
                        "created_at",
                        "expires_at",
                        "remaining_seconds",
                        "status",
                        "tor"
                      ],
                      "properties": {
                        "tor": {
                          "type": "object",
                          "required": [
                            "enabled"
                          ],
                          "properties": {
                            "mode": {
                              "enum": [
                                "keep"
                              ],
                              "type": "string",
                              "description": "Tor lifetime mode when enabled."
                            },
                            "country": {
                              "anyOf": [
                                {
                                  "type": "string",
                                  "pattern": "^[A-Z]{2}$"
                                },
                                {
                                  "type": "null"
                                }
                              ],
                              "description": "Requested exit country or null."
                            },
                            "enabled": {
                              "type": "boolean",
                              "description": "Whether this Keep uses an isolated Tor runtime."
                            },
                            "last_newnym_at": {
                              "anyOf": [
                                {
                                  "type": "string",
                                  "format": "date-time"
                                },
                                {
                                  "type": "null"
                                }
                              ],
                              "description": "UTC timestamp of the last Tor identity change or null."
                            }
                          },
                          "description": "Tor state bound to this Keep session.",
                          "additionalProperties": true
                        },
                        "keep": {
                          "type": "boolean",
                          "const": true,
                          "description": "Identifies a Keep session."
                        },
                        "status": {
                          "enum": [
                            "active",
                            "expired",
                            "closed"
                          ],
                          "type": "string",
                          "description": "Session state."
                        },
                        "node_id": {
                          "type": "string",
                          "description": "Hosting node identifier."
                        },
                        "created_at": {
                          "type": "string",
                          "format": "date-time",
                          "description": "UTC creation timestamp."
                        },
                        "expires_at": {
                          "type": "string",
                          "format": "date-time",
                          "description": "UTC expiration timestamp."
                        },
                        "runtime_id": {
                          "type": "string",
                          "description": "Reserved runtime identifier."
                        },
                        "session_id": {
                          "type": "string",
                          "description": "Keep session identifier."
                        },
                        "duration_minutes": {
                          "type": "integer",
                          "minimum": 1,
                          "description": "Purchased duration in minutes."
                        },
                        "remaining_seconds": {
                          "type": "integer",
                          "minimum": 0,
                          "description": "Remaining lifetime when serialized."
                        }
                      },
                      "description": "Persistent Keep session.",
                      "additionalProperties": true
                    },
                    "markdown": {
                      "type": "object",
                      "required": [
                        "content",
                        "truncated"
                      ],
                      "properties": {
                        "content": {
                          "type": "string",
                          "description": "Extracted Markdown content."
                        },
                        "maxChars": {
                          "type": "integer",
                          "minimum": 1,
                          "description": "Maximum extraction size in characters."
                        },
                        "extractor": {
                          "type": "string",
                          "description": "Markdown extractor implementation identifier."
                        },
                        "truncated": {
                          "type": "boolean",
                          "description": "Whether content was truncated."
                        }
                      },
                      "description": "Full-body Markdown extraction.",
                      "additionalProperties": true
                    },
                    "runtime_id": {
                      "type": "string",
                      "minLength": 1,
                      "description": "ArkBrowser runtime identifier."
                    },
                    "bearer_type": {
                      "type": "string",
                      "const": "Bearer",
                      "description": "Authentication scheme for bearer."
                    },
                    "access_token": {
                      "type": "string",
                      "pattern": "^ark_access_",
                      "description": "Opaque ark_access bearer issued when settlement creates a payer identity."
                    },
                    "accessibility": {
                      "anyOf": [
                        {
                          "type": "object"
                        },
                        {
                          "type": "array"
                        }
                      ],
                      "description": "Browser accessibility tree returned when requested."
                    },
                    "access_token_type": {
                      "type": "string",
                      "const": "Bearer",
                      "description": "Authentication scheme for access_token."
                    }
                  },
                  "description": "Successful POST /surf response; optional extraction fields follow requested outputs.",
                  "additionalProperties": true
                }
              }
            }
          }
        }
      },
      "arkbrowser": {
        "paymentId": "4592f7a20dcd48c6a42ea80bb0edd8d2",
        "pricingSnapshotHash": "b134226cac5e0a407bb16a222bc9d2b62df817f6b6e957d59f1300307a365859"
      },
      "arkbrowser-tor": {
        "info": {
          "mode": "direct",
          "quote": {
            "amountUsdc": "0.01",
            "components": [
              {
                "key": "browser_minimum",
                "valueUsdc": "0.01000000"
              }
            ],
            "amountAtoms": 10000,
            "pricingVersions": {
              "browser_minimum": 1
            }
          },
          "billing": {
            "oneshotRule": "tor_oneshot_multiplier",
            "keepRentalRule": "tor_keep_price_per_minute",
            "keepRoutePricing": "normal Keep route pricing; no Tor one-shot multiplier inside Keep",
            "authoritativeAmount": "accepts[0].amount"
          },
          "request": {
            "torField": "tor",
            "countryField": "tor_country",
            "countryFormat": "ISO-3166-1-alpha-2",
            "countryAllowed": "Tor Keep creation only"
          },
          "version": "1",
          "controls": {
            "newnym": {
              "path": "/tor/newnym",
              "charge": "free",
              "method": "POST",
              "requires": "active Tor Keep bearer"
            },
            "country": {
              "path": "/tor/country",
              "charge": "free",
              "method": "POST",
              "requires": "active Tor Keep bearer"
            },
            "available": false
          },
          "requested": false
        },
        "schema": {
          "type": "object",
          "required": [
            "version",
            "requested",
            "mode",
            "quote",
            "billing",
            "request",
            "controls"
          ],
          "properties": {
            "mode": {
              "enum": [
                "direct",
                "oneshot-multiplier",
                "keep-rental",
                "keep-route"
              ],
              "type": "string",
              "description": "Tor pricing mode for this quote."
            },
            "quote": {
              "type": "object",
              "required": [
                "amountAtoms",
                "amountUsdc",
                "components",
                "pricingVersions"
              ],
              "properties": {
                "amountUsdc": {
                  "type": "string",
                  "description": "Exact decimal USDC amount of the complete quote."
                },
                "components": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "key",
                      "valueUsdc"
                    ],
                    "properties": {
                      "key": {
                        "type": "string",
                        "minLength": 1,
                        "description": "Pricing component identifier."
                      },
                      "valueUsdc": {
                        "type": "string",
                        "description": "Exact decimal USDC value of this component."
                      }
                    },
                    "description": "One component in the priced x402 quote.",
                    "additionalProperties": false
                  },
                  "description": "Pricing components used to calculate the quote."
                },
                "amountAtoms": {
                  "type": "integer",
                  "minimum": 0,
                  "description": "Atomic USDC amount of the complete quote."
                },
                "pricingVersions": {
                  "type": "object",
                  "description": "Version of every database-backed pricing rule used by this quote.",
                  "additionalProperties": {
                    "type": "integer",
                    "minimum": 1
                  }
                }
              },
              "description": "Informational breakdown of the live quote; accepts[0].amount remains authoritative.",
              "additionalProperties": false
            },
            "billing": {
              "type": "object",
              "required": [
                "authoritativeAmount",
                "oneshotRule",
                "keepRentalRule",
                "keepRoutePricing"
              ],
              "properties": {
                "oneshotRule": {
                  "type": "string",
                  "const": "tor_oneshot_multiplier",
                  "description": "Admin pricing rule applied to Tor requests outside Keep."
                },
                "keepRentalRule": {
                  "type": "string",
                  "const": "tor_keep_price_per_minute",
                  "description": "Admin pricing rule added per minute to a Tor Keep rental."
                },
                "keepRoutePricing": {
                  "type": "string",
                  "description": "Pricing rule for routes executed inside an active Tor Keep."
                },
                "authoritativeAmount": {
                  "type": "string",
                  "const": "accepts[0].amount",
                  "description": "Location of the authoritative x402 amount."
                }
              },
              "description": "Tor pricing semantics used by ArkBrowser.",
              "additionalProperties": false
            },
            "request": {
              "type": "object",
              "required": [
                "torField",
                "countryField",
                "countryFormat",
                "countryAllowed"
              ],
              "properties": {
                "torField": {
                  "type": "string",
                  "const": "tor",
                  "description": "Boolean request field selecting Tor outside an existing Keep."
                },
                "countryField": {
                  "type": "string",
                  "const": "tor_country",
                  "description": "Optional exit-country field for Tor Keep creation."
                },
                "countryFormat": {
                  "type": "string",
                  "const": "ISO-3166-1-alpha-2",
                  "description": "Country-code format."
                },
                "countryAllowed": {
                  "type": "string",
                  "description": "Where the country field is accepted."
                }
              },
              "description": "Public Tor request fields and their constraints.",
              "additionalProperties": false
            },
            "version": {
              "type": "string",
              "const": "1",
              "description": "Extension contract version."
            },
            "controls": {
              "type": "object",
              "required": [
                "available",
                "country",
                "newnym"
              ],
              "properties": {
                "newnym": {
                  "type": "object",
                  "required": [
                    "method",
                    "path",
                    "charge",
                    "requires"
                  ],
                  "properties": {
                    "path": {
                      "type": "string",
                      "description": "Public ArkBrowser control path."
                    },
                    "charge": {
                      "type": "string",
                      "const": "free",
                      "description": "The control operation has no x402 charge."
                    },
                    "method": {
                      "type": "string",
                      "const": "POST",
                      "description": "HTTP method."
                    },
                    "requires": {
                      "type": "string",
                      "description": "Authentication/session requirement."
                    }
                  },
                  "description": "A free Tor Keep control endpoint.",
                  "additionalProperties": false
                },
                "country": {
                  "type": "object",
                  "required": [
                    "method",
                    "path",
                    "charge",
                    "requires"
                  ],
                  "properties": {
                    "path": {
                      "type": "string",
                      "description": "Public ArkBrowser control path."
                    },
                    "charge": {
                      "type": "string",
                      "const": "free",
                      "description": "The control operation has no x402 charge."
                    },
                    "method": {
                      "type": "string",
                      "const": "POST",
                      "description": "HTTP method."
                    },
                    "requires": {
                      "type": "string",
                      "description": "Authentication/session requirement."
                    }
                  },
                  "description": "A free Tor Keep control endpoint.",
                  "additionalProperties": false
                },
                "available": {
                  "type": "boolean",
                  "description": "Whether this quote itself creates/uses a Tor Keep for which the controls are available."
                }
              },
              "description": "Free controls available only while a Tor Keep is active.",
              "additionalProperties": false
            },
            "requested": {
              "type": "boolean",
              "description": "Whether this priced request selected or inherited Tor."
            }
          },
          "description": "ArkBrowser Tor billing and control contract signed into the x402 challenge.",
          "additionalProperties": false
        }
      },
      "payment-identifier": {
        "info": {
          "required": true
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "required"
          ],
          "properties": {
            "id": {
              "type": "string",
              "pattern": "^[a-zA-Z0-9_-]+$",
              "maxLength": 128,
              "minLength": 16
            },
            "required": {
              "type": "boolean"
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "payTo": "0xD638487e09c7F9A742EDE94baA928a74E45f1e94",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api-arkbrowser.arksystemes.fr/run",
      "tags": [
        "profile-automation",
        "browser-automation",
        "web-workflow",
        "data-extraction",
        "agents"
      ],
      "mimeType": "application/json",
      "description": "Execute a wallet-owned ArkBrowser domain profile in a real browser with supplied values, optional interaction steps, and selectable extraction outputs. Use it for repeatable website workflows, form automation, authenticated browsing, structured scraping, and agent tasks. Runs on a temporary worker or an existing Keep session. The live x402 amount reflects outputs and the active Keep discount.",
      "serviceName": "ArkBrowser Profile Run"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "url": "https://example.com",
              "links": true,
              "domain": "example.com",
              "values": {
                "query": "ArkBrowser"
              }
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "url": "https://example.com/",
              "links": [
                {
                  "url": "https://www.iana.org/domains/example",
                  "text": "More information"
                }
              ],
              "worker": 0,
              "results": [
                {
                  "ok": true,
                  "op": "wait",
                  "result": null
                }
              ],
              "runtime_id": "rt_0123456789abcdef",
              "access_token": "ark_access_example_token",
              "access_token_type": "Bearer"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "allOf": [
                    {
                      "if": {
                        "required": [
                          "tor_country"
                        ]
                      },
                      "then": {
                        "anyOf": [
                          {
                            "required": [
                              "keep_minutes"
                            ]
                          },
                          {
                            "required": [
                              "keep"
                            ],
                            "properties": {
                              "keep": {
                                "not": {
                                  "const": false
                                }
                              }
                            }
                          }
                        ],
                        "required": [
                          "tor"
                        ],
                        "properties": {
                          "tor": {
                            "const": true
                          }
                        }
                      }
                    }
                  ],
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "required": [
                    "domain"
                  ],
                  "properties": {
                    "tor": {
                      "type": "boolean",
                      "default": false,
                      "description": "Route this operation through an isolated Tor runtime. Outside Keep, Tor applies the active one-shot multiplier. During Keep creation, Tor adds the configured Tor per-minute rental."
                    },
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "pattern": "^https?://",
                      "description": "Optional absolute HTTP or HTTPS URL overriding the profile target."
                    },
                    "keep": {
                      "anyOf": [
                        {
                          "type": "boolean",
                          "description": "True selects the minimum and false keeps execution temporary."
                        },
                        {
                          "type": "integer",
                          "minimum": 60,
                          "description": "Requested Keep duration in minutes."
                        }
                      ],
                      "default": false,
                      "description": "Create a persistent Keep session with this first operation. True selects the configured minimum; an integer supplies minutes."
                    },
                    "links": {
                      "type": "boolean",
                      "default": false,
                      "description": "Return links extracted from the rendered page."
                    },
                    "steps": {
                      "type": "array",
                      "items": {
                        "oneOf": [
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "ms"
                            ],
                            "properties": {
                              "ms": {
                                "type": "integer",
                                "minimum": 0,
                                "description": "Delay in milliseconds."
                              },
                              "op": {
                                "type": "string",
                                "const": "wait",
                                "description": "Wait operation."
                              }
                            },
                            "description": "Pause browser execution.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op"
                            ],
                            "properties": {
                              "dx": {
                                "type": "integer",
                                "default": 0,
                                "description": "Horizontal displacement in CSS pixels."
                              },
                              "dy": {
                                "type": "integer",
                                "default": 0,
                                "description": "Vertical displacement in CSS pixels."
                              },
                              "op": {
                                "type": "string",
                                "const": "scroll",
                                "description": "Scroll operation."
                              }
                            },
                            "description": "Scroll the active page.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "sel"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "click_css",
                                "description": "CSS-selector click operation."
                              },
                              "sel": {
                                "type": "string",
                                "minLength": 1,
                                "description": "CSS selector of the element to click."
                              }
                            },
                            "description": "Click the first element matching a CSS selector.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "text"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "click_text",
                                "description": "Visible-text click operation."
                              },
                              "text": {
                                "type": "string",
                                "minLength": 1,
                                "description": "Visible text to locate and click."
                              },
                              "partial": {
                                "type": "boolean",
                                "default": false,
                                "description": "Allow partial instead of exact text matching."
                              }
                            },
                            "description": "Click an element by visible text.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "x",
                              "y"
                            ],
                            "properties": {
                              "x": {
                                "type": "number",
                                "description": "Horizontal viewport coordinate in CSS pixels."
                              },
                              "y": {
                                "type": "number",
                                "description": "Vertical viewport coordinate in CSS pixels."
                              },
                              "op": {
                                "type": "string",
                                "const": "click_xy",
                                "description": "Coordinate click operation."
                              }
                            },
                            "description": "Click viewport coordinates.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "sel",
                              "text"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "type_css",
                                "description": "CSS-selector text entry operation."
                              },
                              "sel": {
                                "type": "string",
                                "minLength": 1,
                                "description": "CSS selector of the target input."
                              },
                              "text": {
                                "type": "string",
                                "description": "Text to enter."
                              }
                            },
                            "description": "Type text into a CSS-selected element.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "key"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "key",
                                "description": "Keyboard operation."
                              },
                              "key": {
                                "type": "string",
                                "minLength": 1,
                                "description": "Key name such as Enter, Escape, Tab, or ArrowDown."
                              }
                            },
                            "description": "Send a keyboard key.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "js"
                            ],
                            "properties": {
                              "js": {
                                "type": "string",
                                "minLength": 1,
                                "description": "JavaScript source evaluated in page context."
                              },
                              "op": {
                                "type": "string",
                                "const": "eval",
                                "description": "JavaScript evaluation operation."
                              }
                            },
                            "description": "Evaluate JavaScript in the page.",
                            "additionalProperties": true
                          }
                        ],
                        "description": "One ordered browser interaction with operation-specific parameters."
                      },
                      "default": [],
                      "description": "Ordered browser interactions executed after navigation."
                    },
                    "domain": {
                      "type": "string",
                      "pattern": "^[^/\\s]+$",
                      "maxLength": 255,
                      "minLength": 1,
                      "description": "Wallet-owned profile domain key, normalized to lowercase, without slash or whitespace."
                    },
                    "values": {
                      "type": "object",
                      "default": {},
                      "description": "Named values supplied to saved profile fields and actions.",
                      "additionalProperties": true
                    },
                    "worker": {
                      "type": "integer",
                      "minimum": 0,
                      "description": "Zero-based browser worker index. ArkBrowser selects an available worker when omitted."
                    },
                    "include_dom": {
                      "type": "boolean",
                      "default": false,
                      "description": "Return the rendered DOM in the dom field."
                    },
                    "tor_country": {
                      "type": "string",
                      "pattern": "^[A-Za-z]{2}$",
                      "maxLength": 2,
                      "minLength": 2,
                      "description": "Optional ISO 3166-1 alpha-2 Tor exit country used only when creating a Tor Keep session. Change it later with POST /tor/country."
                    },
                    "keep_minutes": {
                      "type": "integer",
                      "minimum": 60,
                      "description": "Create a persistent Keep session for this duration. The minimum follows the active pricing rule."
                    },
                    "include_source": {
                      "type": "boolean",
                      "default": false,
                      "description": "Return rendered HTML in the source field."
                    },
                    "include_markdown": {
                      "type": "boolean",
                      "default": false,
                      "description": "Return full-body Markdown in the markdown field."
                    },
                    "include_accessibility": {
                      "type": "boolean",
                      "default": false,
                      "description": "Return the browser accessibility tree in the accessibility field."
                    }
                  },
                  "description": "Request body accepted by POST /run.",
                  "additionalProperties": true
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "ok",
                    "runtime_id",
                    "url",
                    "worker",
                    "results"
                  ],
                  "properties": {
                    "ok": {
                      "type": "boolean",
                      "const": true,
                      "description": "Successful browser execution."
                    },
                    "dom": {
                      "anyOf": [
                        {
                          "type": "object"
                        },
                        {
                          "type": "array"
                        },
                        {
                          "type": "string"
                        }
                      ],
                      "description": "Rendered DOM returned when requested."
                    },
                    "tor": {
                      "type": "object",
                      "required": [
                        "enabled",
                        "mode"
                      ],
                      "properties": {
                        "mode": {
                          "enum": [
                            "oneshot",
                            "keep"
                          ],
                          "type": "string",
                          "description": "Tor billing/lifetime mode."
                        },
                        "country": {
                          "anyOf": [
                            {
                              "type": "string",
                              "pattern": "^[A-Z]{2}$"
                            },
                            {
                              "type": "null"
                            }
                          ],
                          "description": "Requested Tor exit country for a Keep session, or null when Tor chooses the exit country."
                        },
                        "enabled": {
                          "type": "boolean",
                          "const": true,
                          "description": "Tor routing is active."
                        }
                      },
                      "description": "Tor routing state returned when Tor is active.",
                      "additionalProperties": true
                    },
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "description": "Final URL loaded by the browser."
                    },
                    "page": {
                      "type": "object",
                      "properties": {
                        "url": {
                          "type": "string",
                          "format": "uri",
                          "description": "Final page URL after redirects."
                        },
                        "lang": {
                          "type": "string",
                          "description": "Document language reported by the page."
                        },
                        "title": {
                          "type": "string",
                          "description": "Rendered document title."
                        },
                        "charset": {
                          "type": "string",
                          "description": "Detected document character encoding."
                        },
                        "canonical": {
                          "type": "string",
                          "format": "uri",
                          "description": "Canonical URL declared by the page."
                        },
                        "contentType": {
                          "type": "string",
                          "description": "Rendered document MIME type."
                        },
                        "description": {
                          "type": "string",
                          "description": "Page meta description."
                        }
                      },
                      "description": "Metadata collected from the rendered page.",
                      "additionalProperties": true
                    },
                    "links": {
                      "type": "array",
                      "items": {
                        "anyOf": [
                          {
                            "type": "string",
                            "format": "uri",
                            "description": "Absolute extracted URL."
                          },
                          {
                            "type": "object",
                            "required": [
                              "url"
                            ],
                            "properties": {
                              "url": {
                                "type": "string",
                                "format": "uri",
                                "description": "Absolute link URL."
                              },
                              "text": {
                                "type": "string",
                                "description": "Visible link text."
                              },
                              "title": {
                                "type": "string",
                                "description": "Optional link title."
                              }
                            },
                            "description": "Structured extracted link.",
                            "additionalProperties": true
                          }
                        ],
                        "description": "Extracted absolute URL or structured link."
                      },
                      "description": "Extracted links when requested."
                    },
                    "bearer": {
                      "type": "string",
                      "pattern": "^ark_keep_",
                      "description": "Opaque ark_keep bearer returned when this request creates Keep."
                    },
                    "source": {
                      "anyOf": [
                        {
                          "type": "string",
                          "description": "Rendered HTML source text."
                        },
                        {
                          "type": "object",
                          "required": [
                            "content",
                            "truncated"
                          ],
                          "properties": {
                            "content": {
                              "type": "string",
                              "description": "Rendered HTML source."
                            },
                            "maxChars": {
                              "type": "integer",
                              "minimum": 1,
                              "description": "Maximum source size in characters."
                            },
                            "truncated": {
                              "type": "boolean",
                              "description": "Whether source was truncated."
                            }
                          },
                          "description": "Bounded rendered HTML extraction.",
                          "additionalProperties": true
                        }
                      ],
                      "description": "Rendered source returned as text or a bounded extraction object."
                    },
                    "worker": {
                      "type": "integer",
                      "minimum": 0,
                      "description": "Zero-based worker used for execution."
                    },
                    "results": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "ok": {
                            "type": "boolean",
                            "description": "Whether the action succeeded."
                          },
                          "op": {
                            "type": "string",
                            "description": "Action operation that was executed."
                          },
                          "error": {
                            "type": "string",
                            "description": "Machine-readable action error."
                          },
                          "result": {
                            "description": "Operation-specific result value."
                          }
                        },
                        "description": "Result of one browser action.",
                        "additionalProperties": true
                      },
                      "description": "Ordered browser-action results."
                    },
                    "session": {
                      "type": "object",
                      "required": [
                        "keep",
                        "session_id",
                        "runtime_id",
                        "node_id",
                        "duration_minutes",
                        "created_at",
                        "expires_at",
                        "remaining_seconds",
                        "status",
                        "tor"
                      ],
                      "properties": {
                        "tor": {
                          "type": "object",
                          "required": [
                            "enabled"
                          ],
                          "properties": {
                            "mode": {
                              "enum": [
                                "keep"
                              ],
                              "type": "string",
                              "description": "Tor lifetime mode when enabled."
                            },
                            "country": {
                              "anyOf": [
                                {
                                  "type": "string",
                                  "pattern": "^[A-Z]{2}$"
                                },
                                {
                                  "type": "null"
                                }
                              ],
                              "description": "Requested exit country or null."
                            },
                            "enabled": {
                              "type": "boolean",
                              "description": "Whether this Keep uses an isolated Tor runtime."
                            },
                            "last_newnym_at": {
                              "anyOf": [
                                {
                                  "type": "string",
                                  "format": "date-time"
                                },
                                {
                                  "type": "null"
                                }
                              ],
                              "description": "UTC timestamp of the last Tor identity change or null."
                            }
                          },
                          "description": "Tor state bound to this Keep session.",
                          "additionalProperties": true
                        },
                        "keep": {
                          "type": "boolean",
                          "const": true,
                          "description": "Identifies a Keep session."
                        },
                        "status": {
                          "enum": [
                            "active",
                            "expired",
                            "closed"
                          ],
                          "type": "string",
                          "description": "Session state."
                        },
                        "node_id": {
                          "type": "string",
                          "description": "Hosting node identifier."
                        },
                        "created_at": {
                          "type": "string",
                          "format": "date-time",
                          "description": "UTC creation timestamp."
                        },
                        "expires_at": {
                          "type": "string",
                          "format": "date-time",
                          "description": "UTC expiration timestamp."
                        },
                        "runtime_id": {
                          "type": "string",
                          "description": "Reserved runtime identifier."
                        },
                        "session_id": {
                          "type": "string",
                          "description": "Keep session identifier."
                        },
                        "duration_minutes": {
                          "type": "integer",
                          "minimum": 1,
                          "description": "Purchased duration in minutes."
                        },
                        "remaining_seconds": {
                          "type": "integer",
                          "minimum": 0,
                          "description": "Remaining lifetime when serialized."
                        }
                      },
                      "description": "Persistent Keep session.",
                      "additionalProperties": true
                    },
                    "markdown": {
                      "type": "object",
                      "required": [
                        "content",
                        "truncated"
                      ],
                      "properties": {
                        "content": {
                          "type": "string",
                          "description": "Extracted Markdown content."
                        },
                        "maxChars": {
                          "type": "integer",
                          "minimum": 1,
                          "description": "Maximum extraction size in characters."
                        },
                        "extractor": {
                          "type": "string",
                          "description": "Markdown extractor implementation identifier."
                        },
                        "truncated": {
                          "type": "boolean",
                          "description": "Whether content was truncated."
                        }
                      },
                      "description": "Full-body Markdown extraction.",
                      "additionalProperties": true
                    },
                    "runtime_id": {
                      "type": "string",
                      "minLength": 1,
                      "description": "ArkBrowser runtime identifier."
                    },
                    "bearer_type": {
                      "type": "string",
                      "const": "Bearer",
                      "description": "Authentication scheme for bearer."
                    },
                    "access_token": {
                      "type": "string",
                      "pattern": "^ark_access_",
                      "description": "Opaque ark_access bearer issued when settlement creates a payer identity."
                    },
                    "accessibility": {
                      "anyOf": [
                        {
                          "type": "object"
                        },
                        {
                          "type": "array"
                        }
                      ],
                      "description": "Browser accessibility tree returned when requested."
                    },
                    "access_token_type": {
                      "type": "string",
                      "const": "Bearer",
                      "description": "Authentication scheme for access_token."
                    }
                  },
                  "description": "Successful POST /run response; optional extraction fields follow requested outputs.",
                  "additionalProperties": true
                }
              }
            }
          }
        }
      },
      "arkbrowser": {
        "paymentId": "0e640b0f5d6747df99f51ba95d46fde3",
        "pricingSnapshotHash": "de0192e568b8a473e2895e062b664ab51907ff780e28a992ff5a1bb9f54ece05"
      },
      "arkbrowser-tor": {
        "info": {
          "mode": "direct",
          "quote": {
            "amountUsdc": "0.01",
            "components": [
              {
                "key": "browser_minimum",
                "valueUsdc": "0.01000000"
              }
            ],
            "amountAtoms": 10000,
            "pricingVersions": {
              "browser_minimum": 1
            }
          },
          "billing": {
            "oneshotRule": "tor_oneshot_multiplier",
            "keepRentalRule": "tor_keep_price_per_minute",
            "keepRoutePricing": "normal Keep route pricing; no Tor one-shot multiplier inside Keep",
            "authoritativeAmount": "accepts[0].amount"
          },
          "request": {
            "torField": "tor",
            "countryField": "tor_country",
            "countryFormat": "ISO-3166-1-alpha-2",
            "countryAllowed": "Tor Keep creation only"
          },
          "version": "1",
          "controls": {
            "newnym": {
              "path": "/tor/newnym",
              "charge": "free",
              "method": "POST",
              "requires": "active Tor Keep bearer"
            },
            "country": {
              "path": "/tor/country",
              "charge": "free",
              "method": "POST",
              "requires": "active Tor Keep bearer"
            },
            "available": false
          },
          "requested": false
        },
        "schema": {
          "type": "object",
          "required": [
            "version",
            "requested",
            "mode",
            "quote",
            "billing",
            "request",
            "controls"
          ],
          "properties": {
            "mode": {
              "enum": [
                "direct",
                "oneshot-multiplier",
                "keep-rental",
                "keep-route"
              ],
              "type": "string",
              "description": "Tor pricing mode for this quote."
            },
            "quote": {
              "type": "object",
              "required": [
                "amountAtoms",
                "amountUsdc",
                "components",
                "pricingVersions"
              ],
              "properties": {
                "amountUsdc": {
                  "type": "string",
                  "description": "Exact decimal USDC amount of the complete quote."
                },
                "components": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "key",
                      "valueUsdc"
                    ],
                    "properties": {
                      "key": {
                        "type": "string",
                        "minLength": 1,
                        "description": "Pricing component identifier."
                      },
                      "valueUsdc": {
                        "type": "string",
                        "description": "Exact decimal USDC value of this component."
                      }
                    },
                    "description": "One component in the priced x402 quote.",
                    "additionalProperties": false
                  },
                  "description": "Pricing components used to calculate the quote."
                },
                "amountAtoms": {
                  "type": "integer",
                  "minimum": 0,
                  "description": "Atomic USDC amount of the complete quote."
                },
                "pricingVersions": {
                  "type": "object",
                  "description": "Version of every database-backed pricing rule used by this quote.",
                  "additionalProperties": {
                    "type": "integer",
                    "minimum": 1
                  }
                }
              },
              "description": "Informational breakdown of the live quote; accepts[0].amount remains authoritative.",
              "additionalProperties": false
            },
            "billing": {
              "type": "object",
              "required": [
                "authoritativeAmount",
                "oneshotRule",
                "keepRentalRule",
                "keepRoutePricing"
              ],
              "properties": {
                "oneshotRule": {
                  "type": "string",
                  "const": "tor_oneshot_multiplier",
                  "description": "Admin pricing rule applied to Tor requests outside Keep."
                },
                "keepRentalRule": {
                  "type": "string",
                  "const": "tor_keep_price_per_minute",
                  "description": "Admin pricing rule added per minute to a Tor Keep rental."
                },
                "keepRoutePricing": {
                  "type": "string",
                  "description": "Pricing rule for routes executed inside an active Tor Keep."
                },
                "authoritativeAmount": {
                  "type": "string",
                  "const": "accepts[0].amount",
                  "description": "Location of the authoritative x402 amount."
                }
              },
              "description": "Tor pricing semantics used by ArkBrowser.",
              "additionalProperties": false
            },
            "request": {
              "type": "object",
              "required": [
                "torField",
                "countryField",
                "countryFormat",
                "countryAllowed"
              ],
              "properties": {
                "torField": {
                  "type": "string",
                  "const": "tor",
                  "description": "Boolean request field selecting Tor outside an existing Keep."
                },
                "countryField": {
                  "type": "string",
                  "const": "tor_country",
                  "description": "Optional exit-country field for Tor Keep creation."
                },
                "countryFormat": {
                  "type": "string",
                  "const": "ISO-3166-1-alpha-2",
                  "description": "Country-code format."
                },
                "countryAllowed": {
                  "type": "string",
                  "description": "Where the country field is accepted."
                }
              },
              "description": "Public Tor request fields and their constraints.",
              "additionalProperties": false
            },
            "version": {
              "type": "string",
              "const": "1",
              "description": "Extension contract version."
            },
            "controls": {
              "type": "object",
              "required": [
                "available",
                "country",
                "newnym"
              ],
              "properties": {
                "newnym": {
                  "type": "object",
                  "required": [
                    "method",
                    "path",
                    "charge",
                    "requires"
                  ],
                  "properties": {
                    "path": {
                      "type": "string",
                      "description": "Public ArkBrowser control path."
                    },
                    "charge": {
                      "type": "string",
                      "const": "free",
                      "description": "The control operation has no x402 charge."
                    },
                    "method": {
                      "type": "string",
                      "const": "POST",
                      "description": "HTTP method."
                    },
                    "requires": {
                      "type": "string",
                      "description": "Authentication/session requirement."
                    }
                  },
                  "description": "A free Tor Keep control endpoint.",
                  "additionalProperties": false
                },
                "country": {
                  "type": "object",
                  "required": [
                    "method",
                    "path",
                    "charge",
                    "requires"
                  ],
                  "properties": {
                    "path": {
                      "type": "string",
                      "description": "Public ArkBrowser control path."
                    },
                    "charge": {
                      "type": "string",
                      "const": "free",
                      "description": "The control operation has no x402 charge."
                    },
                    "method": {
                      "type": "string",
                      "const": "POST",
                      "description": "HTTP method."
                    },
                    "requires": {
                      "type": "string",
                      "description": "Authentication/session requirement."
                    }
                  },
                  "description": "A free Tor Keep control endpoint.",
                  "additionalProperties": false
                },
                "available": {
                  "type": "boolean",
                  "description": "Whether this quote itself creates/uses a Tor Keep for which the controls are available."
                }
              },
              "description": "Free controls available only while a Tor Keep is active.",
              "additionalProperties": false
            },
            "requested": {
              "type": "boolean",
              "description": "Whether this priced request selected or inherited Tor."
            }
          },
          "description": "ArkBrowser Tor billing and control contract signed into the x402 challenge.",
          "additionalProperties": false
        }
      },
      "payment-identifier": {
        "info": {
          "required": true
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "required"
          ],
          "properties": {
            "id": {
              "type": "string",
              "pattern": "^[a-zA-Z0-9_-]+$",
              "maxLength": 128,
              "minLength": 16
            },
            "required": {
              "type": "boolean"
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "payTo": "0xD638487e09c7F9A742EDE94baA928a74E45f1e94",
        "amount": "10000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api-arkbrowser.arksystemes.fr/source",
      "tags": [
        "source-extraction",
        "rendered-html",
        "web-scraping",
        "browser",
        "analysis"
      ],
      "mimeType": "application/json",
      "description": "Execute a wallet-owned ArkBrowser domain profile and return rendered HTML after JavaScript execution, with optional links, Markdown, DOM, accessibility data, values, and browser actions. Designed for page-source retrieval, web auditing, extraction pipelines, and AI analysis of dynamic sites. Source output is always enabled. The live x402 amount reflects all requested formats and Keep usage.",
      "serviceName": "ArkBrowser Page Source"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "url": "https://example.com",
              "domain": "example.com",
              "include_source": true
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "url": "https://example.com/",
              "source": {
                "content": "<!doctype html><html lang=\"en\">...</html>",
                "maxChars": 2000000,
                "truncated": false
              },
              "worker": 0,
              "results": [],
              "runtime_id": "rt_0123456789abcdef",
              "access_token": "ark_access_example_token",
              "access_token_type": "Bearer"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "allOf": [
                    {
                      "if": {
                        "required": [
                          "tor_country"
                        ]
                      },
                      "then": {
                        "anyOf": [
                          {
                            "required": [
                              "keep_minutes"
                            ]
                          },
                          {
                            "required": [
                              "keep"
                            ],
                            "properties": {
                              "keep": {
                                "not": {
                                  "const": false
                                }
                              }
                            }
                          }
                        ],
                        "required": [
                          "tor"
                        ],
                        "properties": {
                          "tor": {
                            "const": true
                          }
                        }
                      }
                    }
                  ],
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "required": [
                    "domain"
                  ],
                  "properties": {
                    "tor": {
                      "type": "boolean",
                      "default": false,
                      "description": "Route this operation through an isolated Tor runtime. Outside Keep, Tor applies the active one-shot multiplier. During Keep creation, Tor adds the configured Tor per-minute rental."
                    },
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "pattern": "^https?://",
                      "description": "Optional absolute HTTP or HTTPS URL overriding the profile target."
                    },
                    "keep": {
                      "anyOf": [
                        {
                          "type": "boolean",
                          "description": "True selects the minimum and false keeps execution temporary."
                        },
                        {
                          "type": "integer",
                          "minimum": 60,
                          "description": "Requested Keep duration in minutes."
                        }
                      ],
                      "default": false,
                      "description": "Create a persistent Keep session with this first operation. True selects the configured minimum; an integer supplies minutes."
                    },
                    "links": {
                      "type": "boolean",
                      "default": false,
                      "description": "Return links extracted from the rendered page."
                    },
                    "steps": {
                      "type": "array",
                      "items": {
                        "oneOf": [
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "ms"
                            ],
                            "properties": {
                              "ms": {
                                "type": "integer",
                                "minimum": 0,
                                "description": "Delay in milliseconds."
                              },
                              "op": {
                                "type": "string",
                                "const": "wait",
                                "description": "Wait operation."
                              }
                            },
                            "description": "Pause browser execution.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op"
                            ],
                            "properties": {
                              "dx": {
                                "type": "integer",
                                "default": 0,
                                "description": "Horizontal displacement in CSS pixels."
                              },
                              "dy": {
                                "type": "integer",
                                "default": 0,
                                "description": "Vertical displacement in CSS pixels."
                              },
                              "op": {
                                "type": "string",
                                "const": "scroll",
                                "description": "Scroll operation."
                              }
                            },
                            "description": "Scroll the active page.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "sel"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "click_css",
                                "description": "CSS-selector click operation."
                              },
                              "sel": {
                                "type": "string",
                                "minLength": 1,
                                "description": "CSS selector of the element to click."
                              }
                            },
                            "description": "Click the first element matching a CSS selector.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "text"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "click_text",
                                "description": "Visible-text click operation."
                              },
                              "text": {
                                "type": "string",
                                "minLength": 1,
                                "description": "Visible text to locate and click."
                              },
                              "partial": {
                                "type": "boolean",
                                "default": false,
                                "description": "Allow partial instead of exact text matching."
                              }
                            },
                            "description": "Click an element by visible text.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "x",
                              "y"
                            ],
                            "properties": {
                              "x": {
                                "type": "number",
                                "description": "Horizontal viewport coordinate in CSS pixels."
                              },
                              "y": {
                                "type": "number",
                                "description": "Vertical viewport coordinate in CSS pixels."
                              },
                              "op": {
                                "type": "string",
                                "const": "click_xy",
                                "description": "Coordinate click operation."
                              }
                            },
                            "description": "Click viewport coordinates.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "sel",
                              "text"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "type_css",
                                "description": "CSS-selector text entry operation."
                              },
                              "sel": {
                                "type": "string",
                                "minLength": 1,
                                "description": "CSS selector of the target input."
                              },
                              "text": {
                                "type": "string",
                                "description": "Text to enter."
                              }
                            },
                            "description": "Type text into a CSS-selected element.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "key"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "key",
                                "description": "Keyboard operation."
                              },
                              "key": {
                                "type": "string",
                                "minLength": 1,
                                "description": "Key name such as Enter, Escape, Tab, or ArrowDown."
                              }
                            },
                            "description": "Send a keyboard key.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "js"
                            ],
                            "properties": {
                              "js": {
                                "type": "string",
                                "minLength": 1,
                                "description": "JavaScript source evaluated in page context."
                              },
                              "op": {
                                "type": "string",
                                "const": "eval",
                                "description": "JavaScript evaluation operation."
                              }
                            },
                            "description": "Evaluate JavaScript in the page.",
                            "additionalProperties": true
                          }
                        ],
                        "description": "One ordered browser interaction with operation-specific parameters."
                      },
                      "default": [],
                      "description": "Ordered browser interactions executed after navigation."
                    },
                    "domain": {
                      "type": "string",
                      "pattern": "^[^/\\s]+$",
                      "maxLength": 255,
                      "minLength": 1,
                      "description": "Wallet-owned profile domain key, normalized to lowercase, without slash or whitespace."
                    },
                    "values": {
                      "type": "object",
                      "default": {},
                      "description": "Named values supplied to saved profile fields and actions.",
                      "additionalProperties": true
                    },
                    "worker": {
                      "type": "integer",
                      "minimum": 0,
                      "description": "Zero-based browser worker index. ArkBrowser selects an available worker when omitted."
                    },
                    "include_dom": {
                      "type": "boolean",
                      "default": false,
                      "description": "Return the rendered DOM in the dom field."
                    },
                    "tor_country": {
                      "type": "string",
                      "pattern": "^[A-Za-z]{2}$",
                      "maxLength": 2,
                      "minLength": 2,
                      "description": "Optional ISO 3166-1 alpha-2 Tor exit country used only when creating a Tor Keep session. Change it later with POST /tor/country."
                    },
                    "keep_minutes": {
                      "type": "integer",
                      "minimum": 60,
                      "description": "Create a persistent Keep session for this duration. The minimum follows the active pricing rule."
                    },
                    "include_source": {
                      "type": "boolean",
                      "default": true,
                      "description": "Return rendered HTML. This route forces true when omitted."
                    },
                    "include_markdown": {
                      "type": "boolean",
                      "default": false,
                      "description": "Return full-body Markdown in the markdown field."
                    },
                    "include_accessibility": {
                      "type": "boolean",
                      "default": false,
                      "description": "Return the browser accessibility tree in the accessibility field."
                    }
                  },
                  "description": "Request body accepted by POST /source.",
                  "additionalProperties": true
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "ok",
                    "runtime_id",
                    "url",
                    "worker",
                    "results",
                    "source"
                  ],
                  "properties": {
                    "ok": {
                      "type": "boolean",
                      "const": true,
                      "description": "Successful browser execution."
                    },
                    "dom": {
                      "anyOf": [
                        {
                          "type": "object"
                        },
                        {
                          "type": "array"
                        },
                        {
                          "type": "string"
                        }
                      ],
                      "description": "Rendered DOM returned when requested."
                    },
                    "tor": {
                      "type": "object",
                      "required": [
                        "enabled",
                        "mode"
                      ],
                      "properties": {
                        "mode": {
                          "enum": [
                            "oneshot",
                            "keep"
                          ],
                          "type": "string",
                          "description": "Tor billing/lifetime mode."
                        },
                        "country": {
                          "anyOf": [
                            {
                              "type": "string",
                              "pattern": "^[A-Z]{2}$"
                            },
                            {
                              "type": "null"
                            }
                          ],
                          "description": "Requested Tor exit country for a Keep session, or null when Tor chooses the exit country."
                        },
                        "enabled": {
                          "type": "boolean",
                          "const": true,
                          "description": "Tor routing is active."
                        }
                      },
                      "description": "Tor routing state returned when Tor is active.",
                      "additionalProperties": true
                    },
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "description": "Final URL loaded by the browser."
                    },
                    "page": {
                      "type": "object",
                      "properties": {
                        "url": {
                          "type": "string",
                          "format": "uri",
                          "description": "Final page URL after redirects."
                        },
                        "lang": {
                          "type": "string",
                          "description": "Document language reported by the page."
                        },
                        "title": {
                          "type": "string",
                          "description": "Rendered document title."
                        },
                        "charset": {
                          "type": "string",
                          "description": "Detected document character encoding."
                        },
                        "canonical": {
                          "type": "string",
                          "format": "uri",
                          "description": "Canonical URL declared by the page."
                        },
                        "contentType": {
                          "type": "string",
                          "description": "Rendered document MIME type."
                        },
                        "description": {
                          "type": "string",
                          "description": "Page meta description."
                        }
                      },
                      "description": "Metadata collected from the rendered page.",
                      "additionalProperties": true
                    },
                    "links": {
                      "type": "array",
                      "items": {
                        "anyOf": [
                          {
                            "type": "string",
                            "format": "uri",
                            "description": "Absolute extracted URL."
                          },
                          {
                            "type": "object",
                            "required": [
                              "url"
                            ],
                            "properties": {
                              "url": {
                                "type": "string",
                                "format": "uri",
                                "description": "Absolute link URL."
                              },
                              "text": {
                                "type": "string",
                                "description": "Visible link text."
                              },
                              "title": {
                                "type": "string",
                                "description": "Optional link title."
                              }
                            },
                            "description": "Structured extracted link.",
                            "additionalProperties": true
                          }
                        ],
                        "description": "Extracted absolute URL or structured link."
                      },
                      "description": "Extracted links when requested."
                    },
                    "bearer": {
                      "type": "string",
                      "pattern": "^ark_keep_",
                      "description": "Opaque ark_keep bearer returned when this request creates Keep."
                    },
                    "source": {
                      "anyOf": [
                        {
                          "type": "string",
                          "description": "Rendered HTML source text."
                        },
                        {
                          "type": "object",
                          "required": [
                            "content",
                            "truncated"
                          ],
                          "properties": {
                            "content": {
                              "type": "string",
                              "description": "Rendered HTML source."
                            },
                            "maxChars": {
                              "type": "integer",
                              "minimum": 1,
                              "description": "Maximum source size in characters."
                            },
                            "truncated": {
                              "type": "boolean",
                              "description": "Whether source was truncated."
                            }
                          },
                          "description": "Bounded rendered HTML extraction.",
                          "additionalProperties": true
                        }
                      ],
                      "description": "Rendered source returned as text or a bounded extraction object."
                    },
                    "worker": {
                      "type": "integer",
                      "minimum": 0,
                      "description": "Zero-based worker used for execution."
                    },
                    "results": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "ok": {
                            "type": "boolean",
                            "description": "Whether the action succeeded."
                          },
                          "op": {
                            "type": "string",
                            "description": "Action operation that was executed."
                          },
                          "error": {
                            "type": "string",
                            "description": "Machine-readable action error."
                          },
                          "result": {
                            "description": "Operation-specific result value."
                          }
                        },
                        "description": "Result of one browser action.",
                        "additionalProperties": true
                      },
                      "description": "Ordered browser-action results."
                    },
                    "session": {
                      "type": "object",
                      "required": [
                        "keep",
                        "session_id",
                        "runtime_id",
                        "node_id",
                        "duration_minutes",
                        "created_at",
                        "expires_at",
                        "remaining_seconds",
                        "status",
                        "tor"
                      ],
                      "properties": {
                        "tor": {
                          "type": "object",
                          "required": [
                            "enabled"
                          ],
                          "properties": {
                            "mode": {
                              "enum": [
                                "keep"
                              ],
                              "type": "string",
                              "description": "Tor lifetime mode when enabled."
                            },
                            "country": {
                              "anyOf": [
                                {
                                  "type": "string",
                                  "pattern": "^[A-Z]{2}$"
                                },
                                {
                                  "type": "null"
                                }
                              ],
                              "description": "Requested exit country or null."
                            },
                            "enabled": {
                              "type": "boolean",
                              "description": "Whether this Keep uses an isolated Tor runtime."
                            },
                            "last_newnym_at": {
                              "anyOf": [
                                {
                                  "type": "string",
                                  "format": "date-time"
                                },
                                {
                                  "type": "null"
                                }
                              ],
                              "description": "UTC timestamp of the last Tor identity change or null."
                            }
                          },
                          "description": "Tor state bound to this Keep session.",
                          "additionalProperties": true
                        },
                        "keep": {
                          "type": "boolean",
                          "const": true,
                          "description": "Identifies a Keep session."
                        },
                        "status": {
                          "enum": [
                            "active",
                            "expired",
                            "closed"
                          ],
                          "type": "string",
                          "description": "Session state."
                        },
                        "node_id": {
                          "type": "string",
                          "description": "Hosting node identifier."
                        },
                        "created_at": {
                          "type": "string",
                          "format": "date-time",
                          "description": "UTC creation timestamp."
                        },
                        "expires_at": {
                          "type": "string",
                          "format": "date-time",
                          "description": "UTC expiration timestamp."
                        },
                        "runtime_id": {
                          "type": "string",
                          "description": "Reserved runtime identifier."
                        },
                        "session_id": {
                          "type": "string",
                          "description": "Keep session identifier."
                        },
                        "duration_minutes": {
                          "type": "integer",
                          "minimum": 1,
                          "description": "Purchased duration in minutes."
                        },
                        "remaining_seconds": {
                          "type": "integer",
                          "minimum": 0,
                          "description": "Remaining lifetime when serialized."
                        }
                      },
                      "description": "Persistent Keep session.",
                      "additionalProperties": true
                    },
                    "markdown": {
                      "type": "object",
                      "required": [
                        "content",
                        "truncated"
                      ],
                      "properties": {
                        "content": {
                          "type": "string",
                          "description": "Extracted Markdown content."
                        },
                        "maxChars": {
                          "type": "integer",
                          "minimum": 1,
                          "description": "Maximum extraction size in characters."
                        },
                        "extractor": {
                          "type": "string",
                          "description": "Markdown extractor implementation identifier."
                        },
                        "truncated": {
                          "type": "boolean",
                          "description": "Whether content was truncated."
                        }
                      },
                      "description": "Full-body Markdown extraction.",
                      "additionalProperties": true
                    },
                    "runtime_id": {
                      "type": "string",
                      "minLength": 1,
                      "description": "ArkBrowser runtime identifier."
                    },
                    "bearer_type": {
                      "type": "string",
                      "const": "Bearer",
                      "description": "Authentication scheme for bearer."
                    },
                    "access_token": {
                      "type": "string",
                      "pattern": "^ark_access_",
                      "description": "Opaque ark_access bearer issued when settlement creates a payer identity."
                    },
                    "accessibility": {
                      "anyOf": [
                        {
                          "type": "object"
                        },
                        {
                          "type": "array"
                        }
                      ],
                      "description": "Browser accessibility tree returned when requested."
                    },
                    "access_token_type": {
                      "type": "string",
                      "const": "Bearer",
                      "description": "Authentication scheme for access_token."
                    }
                  },
                  "description": "Successful POST /source response; optional extraction fields follow requested outputs.",
                  "additionalProperties": true
                }
              }
            }
          }
        }
      },
      "arkbrowser": {
        "paymentId": "1b8ebccd56e548bfa617ee3add692816",
        "pricingSnapshotHash": "e5d7115c221ab77609b1684fe0f12a8e6a6f5f5cb501ba9d2b1571e680fdd122"
      },
      "arkbrowser-tor": {
        "info": {
          "mode": "direct",
          "quote": {
            "amountUsdc": "0.01",
            "components": [
              {
                "key": "format_source",
                "valueUsdc": "0.01000000"
              }
            ],
            "amountAtoms": 10000,
            "pricingVersions": {
              "format_source": 1
            }
          },
          "billing": {
            "oneshotRule": "tor_oneshot_multiplier",
            "keepRentalRule": "tor_keep_price_per_minute",
            "keepRoutePricing": "normal Keep route pricing; no Tor one-shot multiplier inside Keep",
            "authoritativeAmount": "accepts[0].amount"
          },
          "request": {
            "torField": "tor",
            "countryField": "tor_country",
            "countryFormat": "ISO-3166-1-alpha-2",
            "countryAllowed": "Tor Keep creation only"
          },
          "version": "1",
          "controls": {
            "newnym": {
              "path": "/tor/newnym",
              "charge": "free",
              "method": "POST",
              "requires": "active Tor Keep bearer"
            },
            "country": {
              "path": "/tor/country",
              "charge": "free",
              "method": "POST",
              "requires": "active Tor Keep bearer"
            },
            "available": false
          },
          "requested": false
        },
        "schema": {
          "type": "object",
          "required": [
            "version",
            "requested",
            "mode",
            "quote",
            "billing",
            "request",
            "controls"
          ],
          "properties": {
            "mode": {
              "enum": [
                "direct",
                "oneshot-multiplier",
                "keep-rental",
                "keep-route"
              ],
              "type": "string",
              "description": "Tor pricing mode for this quote."
            },
            "quote": {
              "type": "object",
              "required": [
                "amountAtoms",
                "amountUsdc",
                "components",
                "pricingVersions"
              ],
              "properties": {
                "amountUsdc": {
                  "type": "string",
                  "description": "Exact decimal USDC amount of the complete quote."
                },
                "components": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "key",
                      "valueUsdc"
                    ],
                    "properties": {
                      "key": {
                        "type": "string",
                        "minLength": 1,
                        "description": "Pricing component identifier."
                      },
                      "valueUsdc": {
                        "type": "string",
                        "description": "Exact decimal USDC value of this component."
                      }
                    },
                    "description": "One component in the priced x402 quote.",
                    "additionalProperties": false
                  },
                  "description": "Pricing components used to calculate the quote."
                },
                "amountAtoms": {
                  "type": "integer",
                  "minimum": 0,
                  "description": "Atomic USDC amount of the complete quote."
                },
                "pricingVersions": {
                  "type": "object",
                  "description": "Version of every database-backed pricing rule used by this quote.",
                  "additionalProperties": {
                    "type": "integer",
                    "minimum": 1
                  }
                }
              },
              "description": "Informational breakdown of the live quote; accepts[0].amount remains authoritative.",
              "additionalProperties": false
            },
            "billing": {
              "type": "object",
              "required": [
                "authoritativeAmount",
                "oneshotRule",
                "keepRentalRule",
                "keepRoutePricing"
              ],
              "properties": {
                "oneshotRule": {
                  "type": "string",
                  "const": "tor_oneshot_multiplier",
                  "description": "Admin pricing rule applied to Tor requests outside Keep."
                },
                "keepRentalRule": {
                  "type": "string",
                  "const": "tor_keep_price_per_minute",
                  "description": "Admin pricing rule added per minute to a Tor Keep rental."
                },
                "keepRoutePricing": {
                  "type": "string",
                  "description": "Pricing rule for routes executed inside an active Tor Keep."
                },
                "authoritativeAmount": {
                  "type": "string",
                  "const": "accepts[0].amount",
                  "description": "Location of the authoritative x402 amount."
                }
              },
              "description": "Tor pricing semantics used by ArkBrowser.",
              "additionalProperties": false
            },
            "request": {
              "type": "object",
              "required": [
                "torField",
                "countryField",
                "countryFormat",
                "countryAllowed"
              ],
              "properties": {
                "torField": {
                  "type": "string",
                  "const": "tor",
                  "description": "Boolean request field selecting Tor outside an existing Keep."
                },
                "countryField": {
                  "type": "string",
                  "const": "tor_country",
                  "description": "Optional exit-country field for Tor Keep creation."
                },
                "countryFormat": {
                  "type": "string",
                  "const": "ISO-3166-1-alpha-2",
                  "description": "Country-code format."
                },
                "countryAllowed": {
                  "type": "string",
                  "description": "Where the country field is accepted."
                }
              },
              "description": "Public Tor request fields and their constraints.",
              "additionalProperties": false
            },
            "version": {
              "type": "string",
              "const": "1",
              "description": "Extension contract version."
            },
            "controls": {
              "type": "object",
              "required": [
                "available",
                "country",
                "newnym"
              ],
              "properties": {
                "newnym": {
                  "type": "object",
                  "required": [
                    "method",
                    "path",
                    "charge",
                    "requires"
                  ],
                  "properties": {
                    "path": {
                      "type": "string",
                      "description": "Public ArkBrowser control path."
                    },
                    "charge": {
                      "type": "string",
                      "const": "free",
                      "description": "The control operation has no x402 charge."
                    },
                    "method": {
                      "type": "string",
                      "const": "POST",
                      "description": "HTTP method."
                    },
                    "requires": {
                      "type": "string",
                      "description": "Authentication/session requirement."
                    }
                  },
                  "description": "A free Tor Keep control endpoint.",
                  "additionalProperties": false
                },
                "country": {
                  "type": "object",
                  "required": [
                    "method",
                    "path",
                    "charge",
                    "requires"
                  ],
                  "properties": {
                    "path": {
                      "type": "string",
                      "description": "Public ArkBrowser control path."
                    },
                    "charge": {
                      "type": "string",
                      "const": "free",
                      "description": "The control operation has no x402 charge."
                    },
                    "method": {
                      "type": "string",
                      "const": "POST",
                      "description": "HTTP method."
                    },
                    "requires": {
                      "type": "string",
                      "description": "Authentication/session requirement."
                    }
                  },
                  "description": "A free Tor Keep control endpoint.",
                  "additionalProperties": false
                },
                "available": {
                  "type": "boolean",
                  "description": "Whether this quote itself creates/uses a Tor Keep for which the controls are available."
                }
              },
              "description": "Free controls available only while a Tor Keep is active.",
              "additionalProperties": false
            },
            "requested": {
              "type": "boolean",
              "description": "Whether this priced request selected or inherited Tor."
            }
          },
          "description": "ArkBrowser Tor billing and control contract signed into the x402 challenge.",
          "additionalProperties": false
        }
      },
      "payment-identifier": {
        "info": {
          "required": true
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "required"
          ],
          "properties": {
            "id": {
              "type": "string",
              "pattern": "^[a-zA-Z0-9_-]+$",
              "maxLength": 128,
              "minLength": 16
            },
            "required": {
              "type": "boolean"
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "payTo": "0xD638487e09c7F9A742EDE94baA928a74E45f1e94",
        "amount": "15000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api-arkbrowser.arksystemes.fr/screenshot",
      "tags": [
        "web-screenshot",
        "full-page-screenshot",
        "browser-capture",
        "element-screenshot",
        "png"
      ],
      "mimeType": "application/json",
      "description": "Capture a true PNG screenshot from the live Chromium page and upload it to ArkBrowser screenshot storage. With no region parameters it captures the complete rendered document beyond the visible viewport; use x/y/width/height for an exact page region or selector for a complete element. Supports browser steps before capture, temporary execution, and active Keep sessions with Keep-aware x402 pricing.",
      "serviceName": "ArkBrowser Full Page Screenshot"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "url": "https://example.com"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "url": "https://example.com/",
              "bytes": 482311,
              "worker": 0,
              "capture": {
                "x": 0,
                "y": 0,
                "mode": "full_page",
                "width": 1440,
                "height": 3200,
                "selector": null,
                "content_width": 1440,
                "content_height": 3200
              },
              "results": [],
              "runtime_id": "rt_0123456789abcdef",
              "access_token": "ark_access_example_token",
              "screenshot_url": "https://screenshot-arkbrowser.arksystemes.fr/i/a2deef889f3d4e2c840d4ade6e46f10d",
              "access_token_type": "Bearer"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "allOf": [
                    {
                      "oneOf": [
                        {
                          "not": {
                            "anyOf": [
                              {
                                "required": [
                                  "selector"
                                ]
                              },
                              {
                                "required": [
                                  "x"
                                ]
                              },
                              {
                                "required": [
                                  "y"
                                ]
                              },
                              {
                                "required": [
                                  "width"
                                ]
                              },
                              {
                                "required": [
                                  "height"
                                ]
                              }
                            ]
                          },
                          "description": "Full-page capture: omit selector and all explicit region coordinates."
                        },
                        {
                          "not": {
                            "anyOf": [
                              {
                                "required": [
                                  "x"
                                ]
                              },
                              {
                                "required": [
                                  "y"
                                ]
                              },
                              {
                                "required": [
                                  "width"
                                ]
                              },
                              {
                                "required": [
                                  "height"
                                ]
                              }
                            ]
                          },
                          "required": [
                            "selector"
                          ],
                          "description": "Element capture: provide selector and omit explicit region coordinates."
                        },
                        {
                          "not": {
                            "required": [
                              "selector"
                            ]
                          },
                          "required": [
                            "x",
                            "y",
                            "width",
                            "height"
                          ],
                          "description": "Region capture: provide all x/y/width/height coordinates and omit selector."
                        }
                      ]
                    },
                    {
                      "if": {
                        "required": [
                          "tor_country"
                        ]
                      },
                      "then": {
                        "anyOf": [
                          {
                            "required": [
                              "keep_minutes"
                            ]
                          },
                          {
                            "required": [
                              "keep"
                            ],
                            "properties": {
                              "keep": {
                                "not": {
                                  "const": false
                                }
                              }
                            }
                          }
                        ],
                        "required": [
                          "tor"
                        ],
                        "properties": {
                          "tor": {
                            "const": true
                          }
                        }
                      }
                    }
                  ],
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "properties": {
                    "x": {
                      "type": "number",
                      "minimum": 0,
                      "description": "Left coordinate of a custom capture region in CSS page pixels."
                    },
                    "y": {
                      "type": "number",
                      "minimum": 0,
                      "description": "Top coordinate of a custom capture region in CSS page pixels."
                    },
                    "tor": {
                      "type": "boolean",
                      "default": false,
                      "description": "Route this operation through an isolated Tor runtime. Outside Keep, Tor applies the active one-shot multiplier. During Keep creation, Tor adds the configured Tor per-minute rental."
                    },
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "pattern": "^https?://",
                      "description": "Absolute HTTP or HTTPS page to load before capture. Required for temporary screenshots; optional in an active Keep session to capture the current page."
                    },
                    "keep": {
                      "anyOf": [
                        {
                          "type": "boolean",
                          "description": "True selects the minimum and false keeps execution temporary."
                        },
                        {
                          "type": "integer",
                          "minimum": 60,
                          "description": "Requested Keep duration in minutes."
                        }
                      ],
                      "default": false,
                      "description": "Create a persistent Keep session with this first operation. True selects the configured minimum; an integer supplies minutes."
                    },
                    "steps": {
                      "type": "array",
                      "items": {
                        "oneOf": [
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "ms"
                            ],
                            "properties": {
                              "ms": {
                                "type": "integer",
                                "minimum": 0,
                                "description": "Delay in milliseconds."
                              },
                              "op": {
                                "type": "string",
                                "const": "wait",
                                "description": "Wait operation."
                              }
                            },
                            "description": "Pause browser execution.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op"
                            ],
                            "properties": {
                              "dx": {
                                "type": "integer",
                                "default": 0,
                                "description": "Horizontal displacement in CSS pixels."
                              },
                              "dy": {
                                "type": "integer",
                                "default": 0,
                                "description": "Vertical displacement in CSS pixels."
                              },
                              "op": {
                                "type": "string",
                                "const": "scroll",
                                "description": "Scroll operation."
                              }
                            },
                            "description": "Scroll the active page.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "sel"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "click_css",
                                "description": "CSS-selector click operation."
                              },
                              "sel": {
                                "type": "string",
                                "minLength": 1,
                                "description": "CSS selector of the element to click."
                              }
                            },
                            "description": "Click the first element matching a CSS selector.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "text"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "click_text",
                                "description": "Visible-text click operation."
                              },
                              "text": {
                                "type": "string",
                                "minLength": 1,
                                "description": "Visible text to locate and click."
                              },
                              "partial": {
                                "type": "boolean",
                                "default": false,
                                "description": "Allow partial instead of exact text matching."
                              }
                            },
                            "description": "Click an element by visible text.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "x",
                              "y"
                            ],
                            "properties": {
                              "x": {
                                "type": "number",
                                "description": "Horizontal viewport coordinate in CSS pixels."
                              },
                              "y": {
                                "type": "number",
                                "description": "Vertical viewport coordinate in CSS pixels."
                              },
                              "op": {
                                "type": "string",
                                "const": "click_xy",
                                "description": "Coordinate click operation."
                              }
                            },
                            "description": "Click viewport coordinates.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "sel",
                              "text"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "type_css",
                                "description": "CSS-selector text entry operation."
                              },
                              "sel": {
                                "type": "string",
                                "minLength": 1,
                                "description": "CSS selector of the target input."
                              },
                              "text": {
                                "type": "string",
                                "description": "Text to enter."
                              }
                            },
                            "description": "Type text into a CSS-selected element.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "key"
                            ],
                            "properties": {
                              "op": {
                                "type": "string",
                                "const": "key",
                                "description": "Keyboard operation."
                              },
                              "key": {
                                "type": "string",
                                "minLength": 1,
                                "description": "Key name such as Enter, Escape, Tab, or ArrowDown."
                              }
                            },
                            "description": "Send a keyboard key.",
                            "additionalProperties": true
                          },
                          {
                            "type": "object",
                            "required": [
                              "op",
                              "js"
                            ],
                            "properties": {
                              "js": {
                                "type": "string",
                                "minLength": 1,
                                "description": "JavaScript source evaluated in page context."
                              },
                              "op": {
                                "type": "string",
                                "const": "eval",
                                "description": "JavaScript evaluation operation."
                              }
                            },
                            "description": "Evaluate JavaScript in the page.",
                            "additionalProperties": true
                          }
                        ],
                        "description": "One ordered browser interaction with operation-specific parameters."
                      },
                      "default": [],
                      "description": "Ordered browser interactions executed immediately before the screenshot."
                    },
                    "width": {
                      "type": "number",
                      "description": "Width of a custom capture region in CSS pixels.",
                      "exclusiveMinimum": 0
                    },
                    "height": {
                      "type": "number",
                      "description": "Height of a custom capture region in CSS pixels.",
                      "exclusiveMinimum": 0
                    },
                    "worker": {
                      "type": "integer",
                      "minimum": 0,
                      "description": "Zero-based browser worker index. ArkBrowser selects an available worker when omitted."
                    },
                    "selector": {
                      "type": "string",
                      "maxLength": 2000,
                      "minLength": 1,
                      "description": "CSS selector whose complete element bounding box is captured. It is mutually exclusive with x/y/width/height."
                    },
                    "tor_country": {
                      "type": "string",
                      "pattern": "^[A-Za-z]{2}$",
                      "maxLength": 2,
                      "minLength": 2,
                      "description": "Optional ISO 3166-1 alpha-2 Tor exit country used only when creating a Tor Keep session. Change it later with POST /tor/country."
                    },
                    "keep_minutes": {
                      "type": "integer",
                      "minimum": 60,
                      "description": "Create a persistent Keep session for this duration. The minimum follows the active pricing rule."
                    }
                  },
                  "description": "Request a true Chromium screenshot. Omitting selector and coordinates captures the complete rendered document beyond the visible viewport.",
                  "additionalProperties": true
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "ok",
                    "url",
                    "screenshot_url",
                    "worker",
                    "results",
                    "capture",
                    "bytes",
                    "runtime_id"
                  ],
                  "properties": {
                    "ok": {
                      "type": "boolean",
                      "const": true,
                      "description": "Successful screenshot capture and upload."
                    },
                    "tor": {
                      "type": "object",
                      "required": [
                        "enabled",
                        "mode"
                      ],
                      "properties": {
                        "mode": {
                          "enum": [
                            "oneshot",
                            "keep"
                          ],
                          "type": "string",
                          "description": "Tor billing/lifetime mode."
                        },
                        "country": {
                          "anyOf": [
                            {
                              "type": "string",
                              "pattern": "^[A-Z]{2}$"
                            },
                            {
                              "type": "null"
                            }
                          ],
                          "description": "Requested Tor exit country for a Keep session, or null when Tor chooses the exit country."
                        },
                        "enabled": {
                          "type": "boolean",
                          "const": true,
                          "description": "Tor routing is active."
                        }
                      },
                      "description": "Tor routing state returned when Tor is active.",
                      "additionalProperties": true
                    },
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "description": "Final page URL captured by the browser."
                    },
                    "bytes": {
                      "type": "integer",
                      "minimum": 1,
                      "description": "PNG size uploaded to screenshot storage in bytes."
                    },
                    "bearer": {
                      "type": "string",
                      "pattern": "^ark_keep_",
                      "description": "Opaque ark_keep bearer returned when this request creates Keep."
                    },
                    "worker": {
                      "type": "integer",
                      "minimum": 0,
                      "description": "Zero-based worker used for capture."
                    },
                    "capture": {
                      "type": "object",
                      "required": [
                        "mode",
                        "x",
                        "y",
                        "width",
                        "height",
                        "content_width",
                        "content_height"
                      ],
                      "properties": {
                        "x": {
                          "type": "number",
                          "description": "Left page coordinate captured in CSS pixels."
                        },
                        "y": {
                          "type": "number",
                          "description": "Top page coordinate captured in CSS pixels."
                        },
                        "mode": {
                          "enum": [
                            "full_page",
                            "region",
                            "selector"
                          ],
                          "type": "string",
                          "description": "Capture mode selected by the request."
                        },
                        "width": {
                          "type": "number",
                          "description": "Captured width in CSS pixels.",
                          "exclusiveMinimum": 0
                        },
                        "height": {
                          "type": "number",
                          "description": "Captured height in CSS pixels.",
                          "exclusiveMinimum": 0
                        },
                        "selector": {
                          "anyOf": [
                            {
                              "type": "string",
                              "description": "CSS selector used for capture."
                            },
                            {
                              "type": "null",
                              "description": "No selector was used."
                            }
                          ],
                          "description": "CSS selector used for element capture, or null otherwise."
                        },
                        "content_width": {
                          "type": "number",
                          "minimum": 0,
                          "description": "Full rendered document width measured by Chromium in CSS pixels."
                        },
                        "content_height": {
                          "type": "number",
                          "minimum": 0,
                          "description": "Full rendered document height measured by Chromium in CSS pixels."
                        }
                      },
                      "description": "Geometry actually captured by Chromium.",
                      "additionalProperties": true
                    },
                    "results": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "ok": {
                            "type": "boolean",
                            "description": "Whether the action succeeded."
                          },
                          "op": {
                            "type": "string",
                            "description": "Action operation that was executed."
                          },
                          "error": {
                            "type": "string",
                            "description": "Machine-readable action error."
                          },
                          "result": {
                            "description": "Operation-specific result value."
                          }
                        },
                        "description": "Result of one browser action.",
                        "additionalProperties": true
                      },
                      "description": "Ordered results of browser steps executed before capture."
                    },
                    "session": {
                      "type": "object",
                      "required": [
                        "keep",
                        "session_id",
                        "runtime_id",
                        "node_id",
                        "duration_minutes",
                        "created_at",
                        "expires_at",
                        "remaining_seconds",
                        "status",
                        "tor"
                      ],
                      "properties": {
                        "tor": {
                          "type": "object",
                          "required": [
                            "enabled"
                          ],
                          "properties": {
                            "mode": {
                              "enum": [
                                "keep"
                              ],
                              "type": "string",
                              "description": "Tor lifetime mode when enabled."
                            },
                            "country": {
                              "anyOf": [
                                {
                                  "type": "string",
                                  "pattern": "^[A-Z]{2}$"
                                },
                                {
                                  "type": "null"
                                }
                              ],
                              "description": "Requested exit country or null."
                            },
                            "enabled": {
                              "type": "boolean",
                              "description": "Whether this Keep uses an isolated Tor runtime."
                            },
                            "last_newnym_at": {
                              "anyOf": [
                                {
                                  "type": "string",
                                  "format": "date-time"
                                },
                                {
                                  "type": "null"
                                }
                              ],
                              "description": "UTC timestamp of the last Tor identity change or null."
                            }
                          },
                          "description": "Tor state bound to this Keep session.",
                          "additionalProperties": true
                        },
                        "keep": {
                          "type": "boolean",
                          "const": true,
                          "description": "Identifies a Keep session."
                        },
                        "status": {
                          "enum": [
                            "active",
                            "expired",
                            "closed"
                          ],
                          "type": "string",
                          "description": "Session state."
                        },
                        "node_id": {
                          "type": "string",
                          "description": "Hosting node identifier."
                        },
                        "created_at": {
                          "type": "string",
                          "format": "date-time",
                          "description": "UTC creation timestamp."
                        },
                        "expires_at": {
                          "type": "string",
                          "format": "date-time",
                          "description": "UTC expiration timestamp."
                        },
                        "runtime_id": {
                          "type": "string",
                          "description": "Reserved runtime identifier."
                        },
                        "session_id": {
                          "type": "string",
                          "description": "Keep session identifier."
                        },
                        "duration_minutes": {
                          "type": "integer",
                          "minimum": 1,
                          "description": "Purchased duration in minutes."
                        },
                        "remaining_seconds": {
                          "type": "integer",
                          "minimum": 0,
                          "description": "Remaining lifetime when serialized."
                        }
                      },
                      "description": "Persistent Keep session.",
                      "additionalProperties": true
                    },
                    "runtime_id": {
                      "type": "string",
                      "minLength": 1,
                      "description": "ArkBrowser runtime identifier."
                    },
                    "bearer_type": {
                      "type": "string",
                      "const": "Bearer",
                      "description": "Authentication scheme for bearer."
                    },
                    "access_token": {
                      "type": "string",
                      "pattern": "^ark_access_",
                      "description": "Opaque ark_access bearer issued when settlement creates a payer identity."
                    },
                    "screenshot_url": {
                      "type": "string",
                      "format": "uri",
                      "pattern": "^https://screenshot-arkbrowser\\.arksystemes\\.fr/i/[0-9a-f]{32}$",
                      "description": "Public HTTPS URL of the uploaded PNG screenshot."
                    },
                    "access_token_type": {
                      "type": "string",
                      "const": "Bearer",
                      "description": "Authentication scheme for access_token."
                    }
                  },
                  "description": "Successful screenshot capture and upload.",
                  "additionalProperties": true
                }
              }
            }
          }
        }
      },
      "arkbrowser": {
        "paymentId": "a89fe79d89e94d6fa18f8a95849431a7",
        "pricingSnapshotHash": "e49c4ebb40af0c3e06a16ecf3fa6b1f18146a12698dfebb572cc483ffde9fb91"
      },
      "arkbrowser-tor": {
        "info": {
          "mode": "direct",
          "quote": {
            "amountUsdc": "0.015",
            "components": [
              {
                "key": "screenshot",
                "valueUsdc": "0.01500000"
              }
            ],
            "amountAtoms": 15000,
            "pricingVersions": {
              "screenshot": 1
            }
          },
          "billing": {
            "oneshotRule": "tor_oneshot_multiplier",
            "keepRentalRule": "tor_keep_price_per_minute",
            "keepRoutePricing": "normal Keep route pricing; no Tor one-shot multiplier inside Keep",
            "authoritativeAmount": "accepts[0].amount"
          },
          "request": {
            "torField": "tor",
            "countryField": "tor_country",
            "countryFormat": "ISO-3166-1-alpha-2",
            "countryAllowed": "Tor Keep creation only"
          },
          "version": "1",
          "controls": {
            "newnym": {
              "path": "/tor/newnym",
              "charge": "free",
              "method": "POST",
              "requires": "active Tor Keep bearer"
            },
            "country": {
              "path": "/tor/country",
              "charge": "free",
              "method": "POST",
              "requires": "active Tor Keep bearer"
            },
            "available": false
          },
          "requested": false
        },
        "schema": {
          "type": "object",
          "required": [
            "version",
            "requested",
            "mode",
            "quote",
            "billing",
            "request",
            "controls"
          ],
          "properties": {
            "mode": {
              "enum": [
                "direct",
                "oneshot-multiplier",
                "keep-rental",
                "keep-route"
              ],
              "type": "string",
              "description": "Tor pricing mode for this quote."
            },
            "quote": {
              "type": "object",
              "required": [
                "amountAtoms",
                "amountUsdc",
                "components",
                "pricingVersions"
              ],
              "properties": {
                "amountUsdc": {
                  "type": "string",
                  "description": "Exact decimal USDC amount of the complete quote."
                },
                "components": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "key",
                      "valueUsdc"
                    ],
                    "properties": {
                      "key": {
                        "type": "string",
                        "minLength": 1,
                        "description": "Pricing component identifier."
                      },
                      "valueUsdc": {
                        "type": "string",
                        "description": "Exact decimal USDC value of this component."
                      }
                    },
                    "description": "One component in the priced x402 quote.",
                    "additionalProperties": false
                  },
                  "description": "Pricing components used to calculate the quote."
                },
                "amountAtoms": {
                  "type": "integer",
                  "minimum": 0,
                  "description": "Atomic USDC amount of the complete quote."
                },
                "pricingVersions": {
                  "type": "object",
                  "description": "Version of every database-backed pricing rule used by this quote.",
                  "additionalProperties": {
                    "type": "integer",
                    "minimum": 1
                  }
                }
              },
              "description": "Informational breakdown of the live quote; accepts[0].amount remains authoritative.",
              "additionalProperties": false
            },
            "billing": {
              "type": "object",
              "required": [
                "authoritativeAmount",
                "oneshotRule",
                "keepRentalRule",
                "keepRoutePricing"
              ],
              "properties": {
                "oneshotRule": {
                  "type": "string",
                  "const": "tor_oneshot_multiplier",
                  "description": "Admin pricing rule applied to Tor requests outside Keep."
                },
                "keepRentalRule": {
                  "type": "string",
                  "const": "tor_keep_price_per_minute",
                  "description": "Admin pricing rule added per minute to a Tor Keep rental."
                },
                "keepRoutePricing": {
                  "type": "string",
                  "description": "Pricing rule for routes executed inside an active Tor Keep."
                },
                "authoritativeAmount": {
                  "type": "string",
                  "const": "accepts[0].amount",
                  "description": "Location of the authoritative x402 amount."
                }
              },
              "description": "Tor pricing semantics used by ArkBrowser.",
              "additionalProperties": false
            },
            "request": {
              "type": "object",
              "required": [
                "torField",
                "countryField",
                "countryFormat",
                "countryAllowed"
              ],
              "properties": {
                "torField": {
                  "type": "string",
                  "const": "tor",
                  "description": "Boolean request field selecting Tor outside an existing Keep."
                },
                "countryField": {
                  "type": "string",
                  "const": "tor_country",
                  "description": "Optional exit-country field for Tor Keep creation."
                },
                "countryFormat": {
                  "type": "string",
                  "const": "ISO-3166-1-alpha-2",
                  "description": "Country-code format."
                },
                "countryAllowed": {
                  "type": "string",
                  "description": "Where the country field is accepted."
                }
              },
              "description": "Public Tor request fields and their constraints.",
              "additionalProperties": false
            },
            "version": {
              "type": "string",
              "const": "1",
              "description": "Extension contract version."
            },
            "controls": {
              "type": "object",
              "required": [
                "available",
                "country",
                "newnym"
              ],
              "properties": {
                "newnym": {
                  "type": "object",
                  "required": [
                    "method",
                    "path",
                    "charge",
                    "requires"
                  ],
                  "properties": {
                    "path": {
                      "type": "string",
                      "description": "Public ArkBrowser control path."
                    },
                    "charge": {
                      "type": "string",
                      "const": "free",
                      "description": "The control operation has no x402 charge."
                    },
                    "method": {
                      "type": "string",
                      "const": "POST",
                      "description": "HTTP method."
                    },
                    "requires": {
                      "type": "string",
                      "description": "Authentication/session requirement."
                    }
                  },
                  "description": "A free Tor Keep control endpoint.",
                  "additionalProperties": false
                },
                "country": {
                  "type": "object",
                  "required": [
                    "method",
                    "path",
                    "charge",
                    "requires"
                  ],
                  "properties": {
                    "path": {
                      "type": "string",
                      "description": "Public ArkBrowser control path."
                    },
                    "charge": {
                      "type": "string",
                      "const": "free",
                      "description": "The control operation has no x402 charge."
                    },
                    "method": {
                      "type": "string",
                      "const": "POST",
                      "description": "HTTP method."
                    },
                    "requires": {
                      "type": "string",
                      "description": "Authentication/session requirement."
                    }
                  },
                  "description": "A free Tor Keep control endpoint.",
                  "additionalProperties": false
                },
                "available": {
                  "type": "boolean",
                  "description": "Whether this quote itself creates/uses a Tor Keep for which the controls are available."
                }
              },
              "description": "Free controls available only while a Tor Keep is active.",
              "additionalProperties": false
            },
            "requested": {
              "type": "boolean",
              "description": "Whether this priced request selected or inherited Tor."
            }
          },
          "description": "ArkBrowser Tor billing and control contract signed into the x402 challenge.",
          "additionalProperties": false
        }
      },
      "payment-identifier": {
        "info": {
          "required": true
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "required"
          ],
          "properties": {
            "id": {
              "type": "string",
              "pattern": "^[a-zA-Z0-9_-]+$",
              "maxLength": 128,
              "minLength": 16
            },
            "required": {
              "type": "boolean"
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "payTo": "0xD638487e09c7F9A742EDE94baA928a74E45f1e94",
        "amount": "1500000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api-arkbrowser.arksystemes.fr/session",
      "tags": [
        "persistent-session",
        "keep-session",
        "stateful-browser",
        "cookies",
        "multi-step"
      ],
      "mimeType": "application/json",
      "description": "Reserve a persistent ArkBrowser runtime and receive an opaque ark_keep bearer for repeated calls on the same browser state. Use it for cookies, multi-step research, stateful navigation, long-running automation, Builder, and human Takeover. Duration defaults to the active minimum pricing rule and has no fixed maximum. The live x402 amount equals requested minutes multiplied by the configured per-minute rate.",
      "serviceName": "ArkBrowser Keep Session"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "keep_minutes": 60
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "bearer": "ark_keep_example_token",
              "session": {
                "tor": {
                  "enabled": false
                },
                "keep": true,
                "status": "active",
                "node_id": "node_0123456789abcdef",
                "created_at": "2026-08-15T12:00:00Z",
                "expires_at": "2026-08-15T13:00:00Z",
                "runtime_id": "rt_0123456789abcdef",
                "session_id": "ks_0123456789abcdef",
                "duration_minutes": 60,
                "remaining_seconds": 3600
              },
              "runtime_id": "rt_0123456789abcdef",
              "bearer_type": "Bearer",
              "access_token": "ark_access_example_token",
              "access_token_type": "Bearer"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "allOf": [
                    {
                      "if": {
                        "required": [
                          "tor_country"
                        ]
                      },
                      "then": {
                        "required": [
                          "tor"
                        ],
                        "properties": {
                          "tor": {
                            "const": true
                          }
                        }
                      }
                    }
                  ],
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "properties": {
                    "tor": {
                      "type": "boolean",
                      "default": false,
                      "description": "Route this operation through an isolated Tor runtime. Outside Keep, Tor applies the active one-shot multiplier. During Keep creation, Tor adds the configured Tor per-minute rental."
                    },
                    "keep": {
                      "anyOf": [
                        {
                          "type": "boolean",
                          "description": "True selects the configured minimum."
                        },
                        {
                          "type": "integer",
                          "minimum": 60,
                          "description": "Requested duration in minutes."
                        }
                      ],
                      "description": "Backward-compatible duration alias. True selects the active minimum; an integer supplies minutes."
                    },
                    "tor_country": {
                      "type": "string",
                      "pattern": "^[A-Za-z]{2}$",
                      "maxLength": 2,
                      "minLength": 2,
                      "description": "Optional ISO 3166-1 alpha-2 Tor exit country used only when creating a Tor Keep session. Change it later with POST /tor/country."
                    },
                    "keep_minutes": {
                      "type": "integer",
                      "default": 60,
                      "minimum": 60,
                      "description": "Requested duration in minutes, defaulting to the active configured minimum."
                    }
                  },
                  "description": "Request body for persistent Keep creation.",
                  "additionalProperties": true
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "ok",
                    "bearer",
                    "bearer_type",
                    "runtime_id",
                    "session"
                  ],
                  "properties": {
                    "ok": {
                      "type": "boolean",
                      "const": true,
                      "description": "Successful Keep creation."
                    },
                    "tor": {
                      "type": "object",
                      "required": [
                        "enabled",
                        "mode"
                      ],
                      "properties": {
                        "mode": {
                          "enum": [
                            "oneshot",
                            "keep"
                          ],
                          "type": "string",
                          "description": "Tor billing/lifetime mode."
                        },
                        "country": {
                          "anyOf": [
                            {
                              "type": "string",
                              "pattern": "^[A-Z]{2}$"
                            },
                            {
                              "type": "null"
                            }
                          ],
                          "description": "Requested Tor exit country for a Keep session, or null when Tor chooses the exit country."
                        },
                        "enabled": {
                          "type": "boolean",
                          "const": true,
                          "description": "Tor routing is active."
                        }
                      },
                      "description": "Tor routing state returned when Tor is active.",
                      "additionalProperties": true
                    },
                    "bearer": {
                      "type": "string",
                      "pattern": "^ark_keep_",
                      "description": "Opaque bearer for subsequent Keep routes."
                    },
                    "session": {
                      "type": "object",
                      "required": [
                        "keep",
                        "session_id",
                        "runtime_id",
                        "node_id",
                        "duration_minutes",
                        "created_at",
                        "expires_at",
                        "remaining_seconds",
                        "status",
                        "tor"
                      ],
                      "properties": {
                        "tor": {
                          "type": "object",
                          "required": [
                            "enabled"
                          ],
                          "properties": {
                            "mode": {
                              "enum": [
                                "keep"
                              ],
                              "type": "string",
                              "description": "Tor lifetime mode when enabled."
                            },
                            "country": {
                              "anyOf": [
                                {
                                  "type": "string",
                                  "pattern": "^[A-Z]{2}$"
                                },
                                {
                                  "type": "null"
                                }
                              ],
                              "description": "Requested exit country or null."
                            },
                            "enabled": {
                              "type": "boolean",
                              "description": "Whether this Keep uses an isolated Tor runtime."
                            },
                            "last_newnym_at": {
                              "anyOf": [
                                {
                                  "type": "string",
                                  "format": "date-time"
                                },
                                {
                                  "type": "null"
                                }
                              ],
                              "description": "UTC timestamp of the last Tor identity change or null."
                            }
                          },
                          "description": "Tor state bound to this Keep session.",
                          "additionalProperties": true
                        },
                        "keep": {
                          "type": "boolean",
                          "const": true,
                          "description": "Identifies a Keep session."
                        },
                        "status": {
                          "enum": [
                            "active",
                            "expired",
                            "closed"
                          ],
                          "type": "string",
                          "description": "Session state."
                        },
                        "node_id": {
                          "type": "string",
                          "description": "Hosting node identifier."
                        },
                        "created_at": {
                          "type": "string",
                          "format": "date-time",
                          "description": "UTC creation timestamp."
                        },
                        "expires_at": {
                          "type": "string",
                          "format": "date-time",
                          "description": "UTC expiration timestamp."
                        },
                        "runtime_id": {
                          "type": "string",
                          "description": "Reserved runtime identifier."
                        },
                        "session_id": {
                          "type": "string",
                          "description": "Keep session identifier."
                        },
                        "duration_minutes": {
                          "type": "integer",
                          "minimum": 1,
                          "description": "Purchased duration in minutes."
                        },
                        "remaining_seconds": {
                          "type": "integer",
                          "minimum": 0,
                          "description": "Remaining lifetime when serialized."
                        }
                      },
                      "description": "Persistent Keep session.",
                      "additionalProperties": true
                    },
                    "runtime_id": {
                      "type": "string",
                      "description": "Reserved runtime identifier."
                    },
                    "bearer_type": {
                      "type": "string",
                      "const": "Bearer",
                      "description": "Authentication scheme for bearer."
                    },
                    "access_token": {
                      "type": "string",
                      "pattern": "^ark_access_",
                      "description": "Opaque ark_access bearer issued for the payer identity."
                    },
                    "access_token_type": {
                      "type": "string",
                      "const": "Bearer",
                      "description": "Authentication scheme for access_token."
                    }
                  },
                  "description": "Successful persistent Keep creation.",
                  "additionalProperties": true
                }
              }
            }
          }
        }
      },
      "arkbrowser": {
        "paymentId": "a532c1ce8a8d4f5fbda568e40ade2b10",
        "pricingSnapshotHash": "831eb422e86880b7ac2f9ffa4d8af119997766cb66017dc6e260d5e5a562f950"
      },
      "arkbrowser-tor": {
        "info": {
          "mode": "direct",
          "quote": {
            "amountUsdc": "1.5",
            "components": [
              {
                "key": "keep_rental",
                "valueUsdc": "1.50000000"
              }
            ],
            "amountAtoms": 1500000,
            "pricingVersions": {
              "keep_min_minutes": 1,
              "keep_price_per_minute": 1
            }
          },
          "billing": {
            "oneshotRule": "tor_oneshot_multiplier",
            "keepRentalRule": "tor_keep_price_per_minute",
            "keepRoutePricing": "normal Keep route pricing; no Tor one-shot multiplier inside Keep",
            "authoritativeAmount": "accepts[0].amount"
          },
          "request": {
            "torField": "tor",
            "countryField": "tor_country",
            "countryFormat": "ISO-3166-1-alpha-2",
            "countryAllowed": "Tor Keep creation only"
          },
          "version": "1",
          "controls": {
            "newnym": {
              "path": "/tor/newnym",
              "charge": "free",
              "method": "POST",
              "requires": "active Tor Keep bearer"
            },
            "country": {
              "path": "/tor/country",
              "charge": "free",
              "method": "POST",
              "requires": "active Tor Keep bearer"
            },
            "available": false
          },
          "requested": false
        },
        "schema": {
          "type": "object",
          "required": [
            "version",
            "requested",
            "mode",
            "quote",
            "billing",
            "request",
            "controls"
          ],
          "properties": {
            "mode": {
              "enum": [
                "direct",
                "oneshot-multiplier",
                "keep-rental",
                "keep-route"
              ],
              "type": "string",
              "description": "Tor pricing mode for this quote."
            },
            "quote": {
              "type": "object",
              "required": [
                "amountAtoms",
                "amountUsdc",
                "components",
                "pricingVersions"
              ],
              "properties": {
                "amountUsdc": {
                  "type": "string",
                  "description": "Exact decimal USDC amount of the complete quote."
                },
                "components": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "key",
                      "valueUsdc"
                    ],
                    "properties": {
                      "key": {
                        "type": "string",
                        "minLength": 1,
                        "description": "Pricing component identifier."
                      },
                      "valueUsdc": {
                        "type": "string",
                        "description": "Exact decimal USDC value of this component."
                      }
                    },
                    "description": "One component in the priced x402 quote.",
                    "additionalProperties": false
                  },
                  "description": "Pricing components used to calculate the quote."
                },
                "amountAtoms": {
                  "type": "integer",
                  "minimum": 0,
                  "description": "Atomic USDC amount of the complete quote."
                },
                "pricingVersions": {
                  "type": "object",
                  "description": "Version of every database-backed pricing rule used by this quote.",
                  "additionalProperties": {
                    "type": "integer",
                    "minimum": 1
                  }
                }
              },
              "description": "Informational breakdown of the live quote; accepts[0].amount remains authoritative.",
              "additionalProperties": false
            },
            "billing": {
              "type": "object",
              "required": [
                "authoritativeAmount",
                "oneshotRule",
                "keepRentalRule",
                "keepRoutePricing"
              ],
              "properties": {
                "oneshotRule": {
                  "type": "string",
                  "const": "tor_oneshot_multiplier",
                  "description": "Admin pricing rule applied to Tor requests outside Keep."
                },
                "keepRentalRule": {
                  "type": "string",
                  "const": "tor_keep_price_per_minute",
                  "description": "Admin pricing rule added per minute to a Tor Keep rental."
                },
                "keepRoutePricing": {
                  "type": "string",
                  "description": "Pricing rule for routes executed inside an active Tor Keep."
                },
                "authoritativeAmount": {
                  "type": "string",
                  "const": "accepts[0].amount",
                  "description": "Location of the authoritative x402 amount."
                }
              },
              "description": "Tor pricing semantics used by ArkBrowser.",
              "additionalProperties": false
            },
            "request": {
              "type": "object",
              "required": [
                "torField",
                "countryField",
                "countryFormat",
                "countryAllowed"
              ],
              "properties": {
                "torField": {
                  "type": "string",
                  "const": "tor",
                  "description": "Boolean request field selecting Tor outside an existing Keep."
                },
                "countryField": {
                  "type": "string",
                  "const": "tor_country",
                  "description": "Optional exit-country field for Tor Keep creation."
                },
                "countryFormat": {
                  "type": "string",
                  "const": "ISO-3166-1-alpha-2",
                  "description": "Country-code format."
                },
                "countryAllowed": {
                  "type": "string",
                  "description": "Where the country field is accepted."
                }
              },
              "description": "Public Tor request fields and their constraints.",
              "additionalProperties": false
            },
            "version": {
              "type": "string",
              "const": "1",
              "description": "Extension contract version."
            },
            "controls": {
              "type": "object",
              "required": [
                "available",
                "country",
                "newnym"
              ],
              "properties": {
                "newnym": {
                  "type": "object",
                  "required": [
                    "method",
                    "path",
                    "charge",
                    "requires"
                  ],
                  "properties": {
                    "path": {
                      "type": "string",
                      "description": "Public ArkBrowser control path."
                    },
                    "charge": {
                      "type": "string",
                      "const": "free",
                      "description": "The control operation has no x402 charge."
                    },
                    "method": {
                      "type": "string",
                      "const": "POST",
                      "description": "HTTP method."
                    },
                    "requires": {
                      "type": "string",
                      "description": "Authentication/session requirement."
                    }
                  },
                  "description": "A free Tor Keep control endpoint.",
                  "additionalProperties": false
                },
                "country": {
                  "type": "object",
                  "required": [
                    "method",
                    "path",
                    "charge",
                    "requires"
                  ],
                  "properties": {
                    "path": {
                      "type": "string",
                      "description": "Public ArkBrowser control path."
                    },
                    "charge": {
                      "type": "string",
                      "const": "free",
                      "description": "The control operation has no x402 charge."
                    },
                    "method": {
                      "type": "string",
                      "const": "POST",
                      "description": "HTTP method."
                    },
                    "requires": {
                      "type": "string",
                      "description": "Authentication/session requirement."
                    }
                  },
                  "description": "A free Tor Keep control endpoint.",
                  "additionalProperties": false
                },
                "available": {
                  "type": "boolean",
                  "description": "Whether this quote itself creates/uses a Tor Keep for which the controls are available."
                }
              },
              "description": "Free controls available only while a Tor Keep is active.",
              "additionalProperties": false
            },
            "requested": {
              "type": "boolean",
              "description": "Whether this priced request selected or inherited Tor."
            }
          },
          "description": "ArkBrowser Tor billing and control contract signed into the x402 challenge.",
          "additionalProperties": false
        }
      },
      "payment-identifier": {
        "info": {
          "required": true
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "required"
          ],
          "properties": {
            "id": {
              "type": "string",
              "pattern": "^[a-zA-Z0-9_-]+$",
              "maxLength": 128,
              "minLength": 16
            },
            "required": {
              "type": "boolean"
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "payTo": "0xD638487e09c7F9A742EDE94baA928a74E45f1e94",
        "amount": "750000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api-arkbrowser.arksystemes.fr/builder/start",
      "tags": [
        "profile-builder",
        "visual-browser",
        "automation",
        "interactive",
        "web-workflow"
      ],
      "mimeType": "application/json",
      "description": "Start an interactive ArkBrowser Builder and receive a proxied operator URL for visually creating or refining reusable domain automation profiles. Finishing Builder exports profiles to the payer identity. A standalone purchase returns temporary access for the configured Builder duration; an ark_keep bearer reuses its persistent runtime and includes Builder in the Keep rental.",
      "serviceName": "ArkBrowser Profile Builder"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "url": "https://example.com",
              "worker": 0
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "url": "https://api-arkbrowser.arksystemes.fr/operator/rt_0123456789abcdef/operator?token=builder_operator_token",
              "mode": "builder",
              "token": "builder_operator_token",
              "active": true,
              "bearer": "ark_temp_example_token",
              "worker": 0,
              "expires_at": "2026-08-15T12:30:00Z",
              "runtime_id": "rt_0123456789abcdef",
              "bearer_type": "Bearer",
              "access_token": "ark_access_example_token",
              "access_token_type": "Bearer"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "properties": {
                    "tor": {
                      "type": "boolean",
                      "default": false,
                      "description": "Route this operation through an isolated Tor runtime. Outside Keep, Tor applies the active one-shot multiplier. During Keep creation, Tor adds the configured Tor per-minute rental."
                    },
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "pattern": "^https?://",
                      "description": "Optional absolute HTTP or HTTPS page to open in Builder."
                    },
                    "worker": {
                      "type": "integer",
                      "minimum": 0,
                      "description": "Zero-based browser worker index. ArkBrowser selects an available worker when omitted."
                    }
                  },
                  "description": "Optional parameters for starting ArkBrowser Builder.",
                  "additionalProperties": true
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "ok",
                    "url",
                    "runtime_id"
                  ],
                  "properties": {
                    "ok": {
                      "type": "boolean",
                      "const": true,
                      "description": "Successful Builder start."
                    },
                    "tor": {
                      "type": "object",
                      "required": [
                        "enabled",
                        "mode"
                      ],
                      "properties": {
                        "mode": {
                          "enum": [
                            "oneshot",
                            "keep"
                          ],
                          "type": "string",
                          "description": "Tor billing/lifetime mode."
                        },
                        "country": {
                          "anyOf": [
                            {
                              "type": "string",
                              "pattern": "^[A-Z]{2}$"
                            },
                            {
                              "type": "null"
                            }
                          ],
                          "description": "Requested Tor exit country for a Keep session, or null when Tor chooses the exit country."
                        },
                        "enabled": {
                          "type": "boolean",
                          "const": true,
                          "description": "Tor routing is active."
                        }
                      },
                      "description": "Tor routing state returned when Tor is active.",
                      "additionalProperties": true
                    },
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "description": "Public proxied operator URL."
                    },
                    "mode": {
                      "type": "string",
                      "const": "builder",
                      "description": "Interactive mode."
                    },
                    "token": {
                      "type": "string",
                      "description": "Ephemeral operator token embedded in the URL."
                    },
                    "active": {
                      "type": "boolean",
                      "description": "Whether Builder is active."
                    },
                    "bearer": {
                      "type": "string",
                      "pattern": "^ark_temp_",
                      "description": "Opaque ark_temp bearer for standalone mode."
                    },
                    "worker": {
                      "type": "integer",
                      "minimum": 0,
                      "description": "Zero-based browser worker index. ArkBrowser selects an available worker when omitted."
                    },
                    "expires_at": {
                      "type": "string",
                      "format": "date-time",
                      "description": "UTC expiration timestamp for standalone access."
                    },
                    "runtime_id": {
                      "type": "string",
                      "description": "Exclusive or Keep runtime identifier."
                    },
                    "bearer_type": {
                      "type": "string",
                      "const": "Bearer",
                      "description": "Authentication scheme for bearer."
                    },
                    "access_token": {
                      "type": "string",
                      "pattern": "^ark_access_",
                      "description": "Opaque ark_access bearer issued for the payer identity."
                    },
                    "access_token_type": {
                      "type": "string",
                      "const": "Bearer",
                      "description": "Authentication scheme for access_token."
                    }
                  },
                  "description": "Successful start of ArkBrowser Builder.",
                  "additionalProperties": true
                }
              }
            }
          }
        }
      },
      "arkbrowser": {
        "paymentId": "02f73bde5d944104bb71c52b7d0bfc8b",
        "pricingSnapshotHash": "23d9da727a943a8802977c439cf063212f9b8b4b7f3a0f2fdb24b07e24d025fc"
      },
      "arkbrowser-tor": {
        "info": {
          "mode": "direct",
          "quote": {
            "amountUsdc": "0.75",
            "components": [
              {
                "key": "builder",
                "valueUsdc": "0.75000000"
              }
            ],
            "amountAtoms": 750000,
            "pricingVersions": {
              "builder": 1
            }
          },
          "billing": {
            "oneshotRule": "tor_oneshot_multiplier",
            "keepRentalRule": "tor_keep_price_per_minute",
            "keepRoutePricing": "normal Keep route pricing; no Tor one-shot multiplier inside Keep",
            "authoritativeAmount": "accepts[0].amount"
          },
          "request": {
            "torField": "tor",
            "countryField": "tor_country",
            "countryFormat": "ISO-3166-1-alpha-2",
            "countryAllowed": "Tor Keep creation only"
          },
          "version": "1",
          "controls": {
            "newnym": {
              "path": "/tor/newnym",
              "charge": "free",
              "method": "POST",
              "requires": "active Tor Keep bearer"
            },
            "country": {
              "path": "/tor/country",
              "charge": "free",
              "method": "POST",
              "requires": "active Tor Keep bearer"
            },
            "available": false
          },
          "requested": false
        },
        "schema": {
          "type": "object",
          "required": [
            "version",
            "requested",
            "mode",
            "quote",
            "billing",
            "request",
            "controls"
          ],
          "properties": {
            "mode": {
              "enum": [
                "direct",
                "oneshot-multiplier",
                "keep-rental",
                "keep-route"
              ],
              "type": "string",
              "description": "Tor pricing mode for this quote."
            },
            "quote": {
              "type": "object",
              "required": [
                "amountAtoms",
                "amountUsdc",
                "components",
                "pricingVersions"
              ],
              "properties": {
                "amountUsdc": {
                  "type": "string",
                  "description": "Exact decimal USDC amount of the complete quote."
                },
                "components": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "key",
                      "valueUsdc"
                    ],
                    "properties": {
                      "key": {
                        "type": "string",
                        "minLength": 1,
                        "description": "Pricing component identifier."
                      },
                      "valueUsdc": {
                        "type": "string",
                        "description": "Exact decimal USDC value of this component."
                      }
                    },
                    "description": "One component in the priced x402 quote.",
                    "additionalProperties": false
                  },
                  "description": "Pricing components used to calculate the quote."
                },
                "amountAtoms": {
                  "type": "integer",
                  "minimum": 0,
                  "description": "Atomic USDC amount of the complete quote."
                },
                "pricingVersions": {
                  "type": "object",
                  "description": "Version of every database-backed pricing rule used by this quote.",
                  "additionalProperties": {
                    "type": "integer",
                    "minimum": 1
                  }
                }
              },
              "description": "Informational breakdown of the live quote; accepts[0].amount remains authoritative.",
              "additionalProperties": false
            },
            "billing": {
              "type": "object",
              "required": [
                "authoritativeAmount",
                "oneshotRule",
                "keepRentalRule",
                "keepRoutePricing"
              ],
              "properties": {
                "oneshotRule": {
                  "type": "string",
                  "const": "tor_oneshot_multiplier",
                  "description": "Admin pricing rule applied to Tor requests outside Keep."
                },
                "keepRentalRule": {
                  "type": "string",
                  "const": "tor_keep_price_per_minute",
                  "description": "Admin pricing rule added per minute to a Tor Keep rental."
                },
                "keepRoutePricing": {
                  "type": "string",
                  "description": "Pricing rule for routes executed inside an active Tor Keep."
                },
                "authoritativeAmount": {
                  "type": "string",
                  "const": "accepts[0].amount",
                  "description": "Location of the authoritative x402 amount."
                }
              },
              "description": "Tor pricing semantics used by ArkBrowser.",
              "additionalProperties": false
            },
            "request": {
              "type": "object",
              "required": [
                "torField",
                "countryField",
                "countryFormat",
                "countryAllowed"
              ],
              "properties": {
                "torField": {
                  "type": "string",
                  "const": "tor",
                  "description": "Boolean request field selecting Tor outside an existing Keep."
                },
                "countryField": {
                  "type": "string",
                  "const": "tor_country",
                  "description": "Optional exit-country field for Tor Keep creation."
                },
                "countryFormat": {
                  "type": "string",
                  "const": "ISO-3166-1-alpha-2",
                  "description": "Country-code format."
                },
                "countryAllowed": {
                  "type": "string",
                  "description": "Where the country field is accepted."
                }
              },
              "description": "Public Tor request fields and their constraints.",
              "additionalProperties": false
            },
            "version": {
              "type": "string",
              "const": "1",
              "description": "Extension contract version."
            },
            "controls": {
              "type": "object",
              "required": [
                "available",
                "country",
                "newnym"
              ],
              "properties": {
                "newnym": {
                  "type": "object",
                  "required": [
                    "method",
                    "path",
                    "charge",
                    "requires"
                  ],
                  "properties": {
                    "path": {
                      "type": "string",
                      "description": "Public ArkBrowser control path."
                    },
                    "charge": {
                      "type": "string",
                      "const": "free",
                      "description": "The control operation has no x402 charge."
                    },
                    "method": {
                      "type": "string",
                      "const": "POST",
                      "description": "HTTP method."
                    },
                    "requires": {
                      "type": "string",
                      "description": "Authentication/session requirement."
                    }
                  },
                  "description": "A free Tor Keep control endpoint.",
                  "additionalProperties": false
                },
                "country": {
                  "type": "object",
                  "required": [
                    "method",
                    "path",
                    "charge",
                    "requires"
                  ],
                  "properties": {
                    "path": {
                      "type": "string",
                      "description": "Public ArkBrowser control path."
                    },
                    "charge": {
                      "type": "string",
                      "const": "free",
                      "description": "The control operation has no x402 charge."
                    },
                    "method": {
                      "type": "string",
                      "const": "POST",
                      "description": "HTTP method."
                    },
                    "requires": {
                      "type": "string",
                      "description": "Authentication/session requirement."
                    }
                  },
                  "description": "A free Tor Keep control endpoint.",
                  "additionalProperties": false
                },
                "available": {
                  "type": "boolean",
                  "description": "Whether this quote itself creates/uses a Tor Keep for which the controls are available."
                }
              },
              "description": "Free controls available only while a Tor Keep is active.",
              "additionalProperties": false
            },
            "requested": {
              "type": "boolean",
              "description": "Whether this priced request selected or inherited Tor."
            }
          },
          "description": "ArkBrowser Tor billing and control contract signed into the x402 challenge.",
          "additionalProperties": false
        }
      },
      "payment-identifier": {
        "info": {
          "required": true
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "required"
          ],
          "properties": {
            "id": {
              "type": "string",
              "pattern": "^[a-zA-Z0-9_-]+$",
              "maxLength": 128,
              "minLength": 16
            },
            "required": {
              "type": "boolean"
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "payTo": "0xD638487e09c7F9A742EDE94baA928a74E45f1e94",
        "amount": "400000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api-arkbrowser.arksystemes.fr/takeover/start",
      "tags": [
        "human-takeover",
        "interactive-browser",
        "agent-handoff",
        "visual-control",
        "browser"
      ],
      "mimeType": "application/json",
      "description": "Start secure interactive ArkBrowser human Takeover and receive a proxied operator URL for the live browser. Use it for visual inspection, exceptional manual steps, agent-to-human handoff, and supervised workflows. A standalone purchase returns temporary access for the configured Takeover duration; an ark_keep bearer reuses the persistent runtime and includes Takeover in the Keep rental.",
      "serviceName": "ArkBrowser Human Takeover"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "worker": 0
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "url": "https://api-arkbrowser.arksystemes.fr/operator/rt_0123456789abcdef/operator?token=takeover_operator_token",
              "mode": "takeover",
              "token": "takeover_operator_token",
              "active": true,
              "bearer": "ark_temp_example_token",
              "worker": 0,
              "expires_at": "2026-08-15T12:15:00Z",
              "runtime_id": "rt_0123456789abcdef",
              "bearer_type": "Bearer",
              "access_token": "ark_access_example_token",
              "access_token_type": "Bearer"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "$schema": "https://json-schema.org/draft/2020-12/schema",
                  "properties": {
                    "tor": {
                      "type": "boolean",
                      "default": false,
                      "description": "Route this operation through an isolated Tor runtime. Outside Keep, Tor applies the active one-shot multiplier. During Keep creation, Tor adds the configured Tor per-minute rental."
                    },
                    "worker": {
                      "type": "integer",
                      "minimum": 0,
                      "description": "Zero-based browser worker index. ArkBrowser selects an available worker when omitted."
                    }
                  },
                  "description": "Optional parameters for starting ArkBrowser Takeover.",
                  "additionalProperties": true
                },
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "ok",
                    "url",
                    "runtime_id"
                  ],
                  "properties": {
                    "ok": {
                      "type": "boolean",
                      "const": true,
                      "description": "Successful Takeover start."
                    },
                    "tor": {
                      "type": "object",
                      "required": [
                        "enabled",
                        "mode"
                      ],
                      "properties": {
                        "mode": {
                          "enum": [
                            "oneshot",
                            "keep"
                          ],
                          "type": "string",
                          "description": "Tor billing/lifetime mode."
                        },
                        "country": {
                          "anyOf": [
                            {
                              "type": "string",
                              "pattern": "^[A-Z]{2}$"
                            },
                            {
                              "type": "null"
                            }
                          ],
                          "description": "Requested Tor exit country for a Keep session, or null when Tor chooses the exit country."
                        },
                        "enabled": {
                          "type": "boolean",
                          "const": true,
                          "description": "Tor routing is active."
                        }
                      },
                      "description": "Tor routing state returned when Tor is active.",
                      "additionalProperties": true
                    },
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "description": "Public proxied operator URL."
                    },
                    "mode": {
                      "type": "string",
                      "const": "takeover",
                      "description": "Interactive mode."
                    },
                    "token": {
                      "type": "string",
                      "description": "Ephemeral operator token embedded in the URL."
                    },
                    "active": {
                      "type": "boolean",
                      "description": "Whether Takeover is active."
                    },
                    "bearer": {
                      "type": "string",
                      "pattern": "^ark_temp_",
                      "description": "Opaque ark_temp bearer for standalone mode."
                    },
                    "worker": {
                      "type": "integer",
                      "minimum": 0,
                      "description": "Zero-based browser worker index. ArkBrowser selects an available worker when omitted."
                    },
                    "expires_at": {
                      "type": "string",
                      "format": "date-time",
                      "description": "UTC expiration timestamp for standalone access."
                    },
                    "runtime_id": {
                      "type": "string",
                      "description": "Exclusive or Keep runtime identifier."
                    },
                    "bearer_type": {
                      "type": "string",
                      "const": "Bearer",
                      "description": "Authentication scheme for bearer."
                    },
                    "access_token": {
                      "type": "string",
                      "pattern": "^ark_access_",
                      "description": "Opaque ark_access bearer issued for the payer identity."
                    },
                    "access_token_type": {
                      "type": "string",
                      "const": "Bearer",
                      "description": "Authentication scheme for access_token."
                    }
                  },
                  "description": "Successful start of ArkBrowser Takeover.",
                  "additionalProperties": true
                }
              }
            }
          }
        }
      },
      "arkbrowser": {
        "paymentId": "9e917e6a085149298ad15b930249907e",
        "pricingSnapshotHash": "be4d2023109ffa72f053eb43c3391aa5f50805e0d8d400df3509892899b1a277"
      },
      "arkbrowser-tor": {
        "info": {
          "mode": "direct",
          "quote": {
            "amountUsdc": "0.4",
            "components": [
              {
                "key": "takeover",
                "valueUsdc": "0.40000000"
              }
            ],
            "amountAtoms": 400000,
            "pricingVersions": {
              "takeover": 1
            }
          },
          "billing": {
            "oneshotRule": "tor_oneshot_multiplier",
            "keepRentalRule": "tor_keep_price_per_minute",
            "keepRoutePricing": "normal Keep route pricing; no Tor one-shot multiplier inside Keep",
            "authoritativeAmount": "accepts[0].amount"
          },
          "request": {
            "torField": "tor",
            "countryField": "tor_country",
            "countryFormat": "ISO-3166-1-alpha-2",
            "countryAllowed": "Tor Keep creation only"
          },
          "version": "1",
          "controls": {
            "newnym": {
              "path": "/tor/newnym",
              "charge": "free",
              "method": "POST",
              "requires": "active Tor Keep bearer"
            },
            "country": {
              "path": "/tor/country",
              "charge": "free",
              "method": "POST",
              "requires": "active Tor Keep bearer"
            },
            "available": false
          },
          "requested": false
        },
        "schema": {
          "type": "object",
          "required": [
            "version",
            "requested",
            "mode",
            "quote",
            "billing",
            "request",
            "controls"
          ],
          "properties": {
            "mode": {
              "enum": [
                "direct",
                "oneshot-multiplier",
                "keep-rental",
                "keep-route"
              ],
              "type": "string",
              "description": "Tor pricing mode for this quote."
            },
            "quote": {
              "type": "object",
              "required": [
                "amountAtoms",
                "amountUsdc",
                "components",
                "pricingVersions"
              ],
              "properties": {
                "amountUsdc": {
                  "type": "string",
                  "description": "Exact decimal USDC amount of the complete quote."
                },
                "components": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "key",
                      "valueUsdc"
                    ],
                    "properties": {
                      "key": {
                        "type": "string",
                        "minLength": 1,
                        "description": "Pricing component identifier."
                      },
                      "valueUsdc": {
                        "type": "string",
                        "description": "Exact decimal USDC value of this component."
                      }
                    },
                    "description": "One component in the priced x402 quote.",
                    "additionalProperties": false
                  },
                  "description": "Pricing components used to calculate the quote."
                },
                "amountAtoms": {
                  "type": "integer",
                  "minimum": 0,
                  "description": "Atomic USDC amount of the complete quote."
                },
                "pricingVersions": {
                  "type": "object",
                  "description": "Version of every database-backed pricing rule used by this quote.",
                  "additionalProperties": {
                    "type": "integer",
                    "minimum": 1
                  }
                }
              },
              "description": "Informational breakdown of the live quote; accepts[0].amount remains authoritative.",
              "additionalProperties": false
            },
            "billing": {
              "type": "object",
              "required": [
                "authoritativeAmount",
                "oneshotRule",
                "keepRentalRule",
                "keepRoutePricing"
              ],
              "properties": {
                "oneshotRule": {
                  "type": "string",
                  "const": "tor_oneshot_multiplier",
                  "description": "Admin pricing rule applied to Tor requests outside Keep."
                },
                "keepRentalRule": {
                  "type": "string",
                  "const": "tor_keep_price_per_minute",
                  "description": "Admin pricing rule added per minute to a Tor Keep rental."
                },
                "keepRoutePricing": {
                  "type": "string",
                  "description": "Pricing rule for routes executed inside an active Tor Keep."
                },
                "authoritativeAmount": {
                  "type": "string",
                  "const": "accepts[0].amount",
                  "description": "Location of the authoritative x402 amount."
                }
              },
              "description": "Tor pricing semantics used by ArkBrowser.",
              "additionalProperties": false
            },
            "request": {
              "type": "object",
              "required": [
                "torField",
                "countryField",
                "countryFormat",
                "countryAllowed"
              ],
              "properties": {
                "torField": {
                  "type": "string",
                  "const": "tor",
                  "description": "Boolean request field selecting Tor outside an existing Keep."
                },
                "countryField": {
                  "type": "string",
                  "const": "tor_country",
                  "description": "Optional exit-country field for Tor Keep creation."
                },
                "countryFormat": {
                  "type": "string",
                  "const": "ISO-3166-1-alpha-2",
                  "description": "Country-code format."
                },
                "countryAllowed": {
                  "type": "string",
                  "description": "Where the country field is accepted."
                }
              },
              "description": "Public Tor request fields and their constraints.",
              "additionalProperties": false
            },
            "version": {
              "type": "string",
              "const": "1",
              "description": "Extension contract version."
            },
            "controls": {
              "type": "object",
              "required": [
                "available",
                "country",
                "newnym"
              ],
              "properties": {
                "newnym": {
                  "type": "object",
                  "required": [
                    "method",
                    "path",
                    "charge",
                    "requires"
                  ],
                  "properties": {
                    "path": {
                      "type": "string",
                      "description": "Public ArkBrowser control path."
                    },
                    "charge": {
                      "type": "string",
                      "const": "free",
                      "description": "The control operation has no x402 charge."
                    },
                    "method": {
                      "type": "string",
                      "const": "POST",
                      "description": "HTTP method."
                    },
                    "requires": {
                      "type": "string",
                      "description": "Authentication/session requirement."
                    }
                  },
                  "description": "A free Tor Keep control endpoint.",
                  "additionalProperties": false
                },
                "country": {
                  "type": "object",
                  "required": [
                    "method",
                    "path",
                    "charge",
                    "requires"
                  ],
                  "properties": {
                    "path": {
                      "type": "string",
                      "description": "Public ArkBrowser control path."
                    },
                    "charge": {
                      "type": "string",
                      "const": "free",
                      "description": "The control operation has no x402 charge."
                    },
                    "method": {
                      "type": "string",
                      "const": "POST",
                      "description": "HTTP method."
                    },
                    "requires": {
                      "type": "string",
                      "description": "Authentication/session requirement."
                    }
                  },
                  "description": "A free Tor Keep control endpoint.",
                  "additionalProperties": false
                },
                "available": {
                  "type": "boolean",
                  "description": "Whether this quote itself creates/uses a Tor Keep for which the controls are available."
                }
              },
              "description": "Free controls available only while a Tor Keep is active.",
              "additionalProperties": false
            },
            "requested": {
              "type": "boolean",
              "description": "Whether this priced request selected or inherited Tor."
            }
          },
          "description": "ArkBrowser Tor billing and control contract signed into the x402 challenge.",
          "additionalProperties": false
        }
      },
      "payment-identifier": {
        "info": {
          "required": true
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "required"
          ],
          "properties": {
            "id": {
              "type": "string",
              "pattern": "^[a-zA-Z0-9_-]+$",
              "maxLength": 128,
              "minLength": 16
            },
            "required": {
              "type": "boolean"
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "payTo": "0xD638487e09c7F9A742EDE94baA928a74E45f1e94",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api-arkbrowser.arksystemes.fr/support",
      "mimeType": "application/json",
      "description": "Open an ArkBrowser agent support ticket"
    },
    "extensions": {
      "arkbrowser": {
        "paymentId": "d9790a6877c343439113e92ecec76ad5",
        "pricingSnapshotHash": "6315f95f0da8f7cc5ae9573a1829ac649ea013f0ed5c35adff9e0491e33f9429"
      },
      "payment-identifier": {
        "info": {
          "required": true
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "required"
          ],
          "properties": {
            "id": {
              "type": "string",
              "pattern": "^[a-zA-Z0-9_-]+$",
              "maxLength": 128,
              "minLength": 16
            },
            "required": {
              "type": "boolean"
            }
          }
        }
      }
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/arkbrowser-api/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME
08-24 · uptime 100.0% · 361ms avg08-25 · uptime 100.0% · 379ms avg08-26 · uptime 100.0% · 413ms avg08-27 · uptime 100.0% · 543ms avg08-28 · uptime 100.0% · 558ms avg08-29 · uptime 100.0% · 329ms avg08-30 · uptime 100.0% · 231ms avg08-31 · uptime 100.0% · 189ms avg09-01 · uptime 100.0% · 179ms avg09-02 · uptime 100.0% · 355ms avg09-03 · uptime 100.0% · 317ms avg09-04 · uptime 100.0% · 263ms avg09-05 · uptime 100.0% · 258ms avg09-06 · uptime 100.0% · 283ms avg09-07 · uptime 100.0% · 304ms avg08-2409-07
30d UPTIME 100%
RESPONSE TIME
08-24 · 361ms avg08-24 · 361ms avg08-25 · 379ms avg08-25 · 379ms avg08-26 · 413ms avg08-26 · 413ms avg08-27 · 543ms avg08-27 · 543ms avg08-28 · 558ms avg08-28 · 558ms avg08-29 · 329ms avg08-29 · 329ms avg08-30 · 231ms avg08-30 · 231ms avg08-31 · 189ms avg08-31 · 189ms avg09-01 · 179ms avg09-01 · 179ms avg09-02 · 355ms avg09-02 · 355ms avg09-03 · 317ms avg09-03 · 317ms avg09-04 · 263ms avg09-04 · 263ms avg09-05 · 258ms avg09-05 · 258ms avg09-06 · 283ms avg09-06 · 283ms avg09-07 · 304ms avg09-07 · 304ms avg08-2409-07
AVG RESP 331ms
PRICE (captured 402, USD)
08-24 · $0.57508-25 · $0.012509-07 · $0.0125$0.012508-2409-07

Median across 8 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
08-24 uptime: 100.0% compliance: 100% checks08-25 uptime: 100.0% compliance: 100% checks08-26 uptime: 100.0% compliance: 100% checks08-27 uptime: 100.0% compliance: 100% checks08-28 uptime: 100.0% compliance: 100% checks08-29 uptime: 100.0% compliance: 100% checks08-30 uptime: 100.0% compliance: 100% checks08-31 uptime: 100.0% compliance: 100% checks09-01 uptime: 100.0% compliance: 100% checks09-02 uptime: 100.0% compliance: 100% checks09-03 uptime: 100.0% compliance: 100% checks09-04 uptime: 100.0% compliance: 100% checks09-05 uptime: 100.0% compliance: 100% checks09-06 uptime: 100.0% compliance: 100% checks09-07 uptime: 100.0% compliance: 100% checksuptimecompliance08-2409-07

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)
no on-chain volume yet
DISTINCT BUYERS
no distinct buyers yet

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-08-25 · last up 2026-09-07

  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

SITE PILLARS

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
recent checks (18) live · click to expand
TIME STATUS RESP CAUSE
● OK 156ms
● OK 149ms
● OK 144ms
● OK 221ms
● OK 128ms
● OK 109ms
● OK 337ms
● OK 264ms
● OK 468ms
● OK 328ms
● OK 467ms
● OK 445ms
● OK 397ms
● OK 447ms
● OK 349ms
● OK 259ms
● OK 358ms
● OK 170ms

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