x402 List

x402 Protocol Service Directory

Gambit

AI PAYMENT-READY

payment-ready until 2026-09-13

Houston GB10 x402 escape hatch. Uncensor $0.04, Whisper STT $0.03, handwritten letter $25, print-and-FedEx PDF $130/$150/$180, private code $0.03. POST /x402/print-ship (US, 20 pages, 6pm CT cutoff).

Pay from $0.03 to $180.00 in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

listed 2026-08-25 · no on-chain settlement recorded yet

BASE URL https://gambit.barrioenergy.com WEBSITE https://gambit.barrioenergy.com ENDPOINTS 7 NETWORK Base ASSET USDC MEMBER SINCE 2026-08-25 MONITORED SINCE 2026-08-25

VERDICT

ranking generation 3

solid 84/100 #46 of 104 in AI by measured score

What the score read on this service: status online, 100% uptime 30d, 529ms response p95, x402 compliance 14 of 14, $0.03 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 104 listings, this one among them. That set is wider than the 104 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
x402engine strong 99 100% ---
Genesis strong 98 100% ---
agente-jefe strong 96 100% ---
kino402 strong 96 100% ---
Arch Tools strong 96 100% ---
5 of 103 other ranked services in AI · see the whole category

ASSESSMENT

updated 1h 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
529ms
avg response
546ms
total checks
1,061

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 $0.03 to $180.00 (p66 in AI)
price (min)
$0.03
price (max)
$180.00
category percentile (min)
p66 in AI
category percentile (max)
p100 in AI
endpoints / prices
7 / 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
1231d
registrar
GoDaddy.com, LLC
hosting
custom
domain created
2023-04-18

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 10d ago (1 in 30d)

schema changed · 10d ago

endpoint added POST /x402/letter

endpoint added POST /x402/print-ship

endpoint added POST /x402/print-ship-rr

endpoint added POST /x402/print-ship-sig

endpoint added POST /x402/transcribe

endpoint added POST /x402/uncensor

schema added POST /x402/letter exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}

schema added POST /x402/print-ship exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}

schema added POST /x402/print-ship-rr exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}

schema added POST /x402/print-ship-sig exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}

schema added POST /x402/transcribe exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","version":"2"}

schema added POST /x402/uncensor exact eip155:8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 USDC 2 300 {"name":"USD Coin","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 /x402/code $0.03 Base USDC header
POST /x402/letter $25.00 Base USDC header
POST /x402/print-ship $130.00 Base USDC header
POST /x402/print-ship-rr $180.00 Base USDC header
POST /x402/print-ship-sig $150.00 Base USDC header
POST /x402/transcribe $0.03 Base USDC header
POST /x402/uncensor $0.04 Base USDC header
7 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to POST /x402/code 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://gambit.barrioenergy.com/x402/code'
// 402 response (captured by monitor) · 7 payloads · click to expand
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x56EA7B41485a355aDF6F1409fD1C4aFcb78CcF48",
        "amount": "30000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://gambit.barrioenergy.com/x402/code",
      "mimeType": "application/json",
      "description": "Human running OpenClaw / Claude Code / OpenCode needs a private coding model without buying a GPU. glm-4.7-flash on this Houston box. Tools + thinking. $0.03. Also POST /v1/chat with model=glm-4.7-flash."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "messages": [
                {
                  "role": "user",
                  "content": "Write a Python function that merges two sorted lists."
                }
              ],
              "max_tokens": 256
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "model": "glm-4.7-flash",
              "message": {
                "role": "assistant",
                "content": "def merge(a, b): ..."
              }
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [
                    "messages"
                  ],
                  "properties": {
                    "model": {
                      "type": "string"
                    },
                    "messages": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "required": [
                          "role",
                          "content"
                        ],
                        "properties": {
                          "role": {
                            "type": "string"
                          },
                          "content": {
                            "type": "string"
                          }
                        }
                      }
                    },
                    "max_tokens": {
                      "type": "integer",
                      "default": 1024
                    }
                  }
                },
                "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"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x56EA7B41485a355aDF6F1409fD1C4aFcb78CcF48",
        "amount": "130000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://gambit.barrioenergy.com/x402/print-ship",
      "mimeType": "application/json",
      "description": "Print and FedEx a PDF in the US. $130 (est $30 FedEx 1-2 day envelope/pak + $100 labor). 20 pages max, US only, 5-digit ZIP. Paid by 6pm CT ships next morning; after 6pm CT the morning after next. Daily cap 5. No notarizing. CSAM, threats, and fraud rejected."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "zip": "62701",
              "notes": "Leave at front desk",
              "country": "US",
              "pdf_url": "https://example.com/doc.pdf",
              "to_name": "Ada Lovelace",
              "from_name": "Gambit",
              "to_address": "123 Main St\nSpringfield, IL 62701"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "sku": "print-fedex",
              "note": "Ivan will print and FedEx",
              "pages": 3,
              "job_id": "00000000-0000-0000-0000-000000000000",
              "status": "paid",
              "promised_out_date": "2026-08-26"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [
                    "to_name",
                    "to_address"
                  ],
                  "properties": {
                    "zip": {
                      "type": "string",
                      "description": "Optional if 5-digit US ZIP is in to_address"
                    },
                    "notes": {
                      "type": "string"
                    },
                    "country": {
                      "type": "string",
                      "default": "US"
                    },
                    "pdf_b64": {
                      "type": "string",
                      "description": "Base64 PDF. Exactly one of pdf_b64 or pdf_url required."
                    },
                    "pdf_url": {
                      "type": "string",
                      "description": "https URL of PDF, 10MB max. Exactly one of pdf_b64 or pdf_url required."
                    },
                    "to_name": {
                      "type": "string"
                    },
                    "from_name": {
                      "type": "string"
                    },
                    "to_address": {
                      "type": "string"
                    }
                  }
                },
                "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"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x56EA7B41485a355aDF6F1409fD1C4aFcb78CcF48",
        "amount": "150000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://gambit.barrioenergy.com/x402/print-ship-sig",
      "mimeType": "application/json",
      "description": "Print and FedEx a PDF in the US with signature required. $150. 20 pages max, US only, 5-digit ZIP. Paid by 6pm CT ships next morning; after 6pm CT the morning after next. Daily cap 5 shared across print-fedex*. No notarizing. CSAM, threats, and fraud rejected. Extras are implied by this path; body signature_required is ignored."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "zip": "62701",
              "pdf_url": "https://example.com/doc.pdf",
              "to_name": "Ada Lovelace",
              "to_address": "123 Main St\nSpringfield, IL 62701"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "sku": "print-fedex-sig",
              "note": "Ivan will print and FedEx (signature required)",
              "pages": 3,
              "job_id": "00000000-0000-0000-0000-000000000000",
              "status": "paid",
              "promised_out_date": "2026-08-26"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [
                    "to_name",
                    "to_address"
                  ],
                  "properties": {
                    "zip": {
                      "type": "string"
                    },
                    "notes": {
                      "type": "string"
                    },
                    "country": {
                      "type": "string",
                      "default": "US"
                    },
                    "pdf_b64": {
                      "type": "string"
                    },
                    "pdf_url": {
                      "type": "string"
                    },
                    "to_name": {
                      "type": "string"
                    },
                    "from_name": {
                      "type": "string"
                    },
                    "to_address": {
                      "type": "string"
                    }
                  }
                },
                "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"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x56EA7B41485a355aDF6F1409fD1C4aFcb78CcF48",
        "amount": "180000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://gambit.barrioenergy.com/x402/print-ship-rr",
      "mimeType": "application/json",
      "description": "Print and FedEx a PDF in the US with signature required plus return receipt / proof of delivery. $180. 20 pages max, US only, 5-digit ZIP. Paid by 6pm CT ships next morning; after 6pm CT the morning after next. Daily cap 5 shared across print-fedex*. No notarizing. CSAM, threats, and fraud rejected. Extras are implied by this path; body return_receipt is ignored."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "zip": "62701",
              "pdf_url": "https://example.com/doc.pdf",
              "to_name": "Ada Lovelace",
              "to_address": "123 Main St\nSpringfield, IL 62701"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "sku": "print-fedex-rr",
              "note": "Ivan will print and FedEx (signature + return receipt)",
              "pages": 3,
              "job_id": "00000000-0000-0000-0000-000000000000",
              "status": "paid",
              "promised_out_date": "2026-08-26"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [
                    "to_name",
                    "to_address"
                  ],
                  "properties": {
                    "zip": {
                      "type": "string"
                    },
                    "notes": {
                      "type": "string"
                    },
                    "country": {
                      "type": "string",
                      "default": "US"
                    },
                    "pdf_b64": {
                      "type": "string"
                    },
                    "pdf_url": {
                      "type": "string"
                    },
                    "to_name": {
                      "type": "string"
                    },
                    "from_name": {
                      "type": "string"
                    },
                    "to_address": {
                      "type": "string"
                    }
                  }
                },
                "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"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x56EA7B41485a355aDF6F1409fD1C4aFcb78CcF48",
        "amount": "40000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://gambit.barrioenergy.com/x402/uncensor",
      "mimeType": "application/json",
      "description": "Hosted model said no. Paste the refusal. Legal uncensored completion on Qwen3 32B abliterated. CSAM and nonconsensual real-person porn still blocked. $0.04."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "prompt": "Finish the argument they would not.",
              "refused": "I cannot help with that request."
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "model": "huihui_ai/qwen3-abliterated:32b",
              "message": {
                "role": "assistant",
                "content": "Here is the legal completion."
              }
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [
                    "prompt"
                  ],
                  "properties": {
                    "prompt": {
                      "type": "string"
                    },
                    "refused": {
                      "type": "string",
                      "description": "Optional: paste what Claude/GPT refused."
                    },
                    "messages": {
                      "type": "array"
                    },
                    "max_tokens": {
                      "type": "integer",
                      "default": 512
                    }
                  }
                },
                "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"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x56EA7B41485a355aDF6F1409fD1C4aFcb78CcF48",
        "amount": "30000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://gambit.barrioenergy.com/x402/transcribe",
      "mimeType": "application/json",
      "description": "Agent cannot hear. Send audio, get text. It never leaves this Houston box. Whisper large-v3. $0.03 USDC."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "audio_url": "https://example.com/sample.wav"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "sku": "whisper-stt",
              "text": "ask not what your country can do for you",
              "model": "whisper-large-v3"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "properties": {
                    "audio_url": {
                      "type": "string",
                      "description": "http(s) URL of audio (mpeg/wav/ogg/webm/mp4). Multipart field file also accepted."
                    }
                  }
                },
                "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"
                }
              }
            }
          }
        }
      }
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x56EA7B41485a355aDF6F1409fD1C4aFcb78CcF48",
        "amount": "25000000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://gambit.barrioenergy.com/x402/letter",
      "mimeType": "application/json",
      "description": "Agent cannot touch atoms. $25 handwritten 1-page letter, stamped and mailed in the US. Ivan fulfills after payment. CSAM, threats, and fraud are rejected."
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "body": "Thank you for everything.",
              "to_name": "Ada Lovelace",
              "from_name": "Gambit",
              "to_address": "123 Main St\nSpringfield, IL 62701"
            },
            "type": "http",
            "method": "POST",
            "bodyType": "json"
          },
          "output": {
            "type": "json",
            "example": {
              "ok": true,
              "note": "Ivan will handwrite and mail",
              "job_id": "00000000-0000-0000-0000-000000000000",
              "status": "paid"
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "properties": {
                "body": {
                  "type": "object",
                  "required": [
                    "to_name",
                    "to_address",
                    "body"
                  ],
                  "properties": {
                    "body": {
                      "type": "string"
                    },
                    "to_name": {
                      "type": "string"
                    },
                    "from_name": {
                      "type": "string"
                    },
                    "to_address": {
                      "type": "string"
                    }
                  }
                },
                "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"
                }
              }
            }
          }
        }
      }
    },
    "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/gambit/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
08-25 · uptime 100.0% · 1513ms avg08-26 · uptime 100.0% · 1313ms avg08-27 · uptime 100.0% · 943ms avg08-28 · uptime 100.0% · 370ms avg08-29 · uptime 100.0% · 495ms avg08-30 · uptime 100.0% · 353ms avg08-31 · uptime 100.0% · 475ms avg09-01 · uptime 100.0% · 345ms avg09-02 · uptime 100.0% · 413ms avg09-03 · uptime 100.0% · 352ms avg09-04 · uptime 100.0% · 345ms avg09-05 · uptime 100.0% · 355ms avg09-06 · uptime 100.0% · 314ms avg08-2509-06
30d UPTIME 100%
RESPONSE TIME
08-25 · 1513ms avg08-25 · 1513ms avg08-26 · 1313ms avg08-26 · 1313ms avg08-27 · 943ms avg08-27 · 943ms avg08-28 · 370ms avg08-28 · 370ms avg08-29 · 495ms avg08-29 · 495ms avg08-30 · 353ms avg08-30 · 353ms avg08-31 · 475ms avg08-31 · 475ms avg09-01 · 345ms avg09-01 · 345ms avg09-02 · 413ms avg09-02 · 413ms avg09-03 · 352ms avg09-03 · 352ms avg09-04 · 345ms avg09-04 · 345ms avg09-05 · 355ms avg09-05 · 355ms avg09-06 · 314ms avg09-06 · 314ms avg08-2509-06
AVG RESP 544ms
PRICE (captured 402, USD)
08-25 · $0.0308-27 · $25.0009-06 · $25.00$25.0008-2509-06

Median across 7 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
08-25 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% checksuptimecompliance08-2509-06

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 2026-08-27 · last up 2026-09-06

  • 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 309ms
● OK 189ms
● OK 164ms
● OK 183ms
● OK 203ms
● OK 179ms
● OK 231ms
● OK 200ms
● OK 194ms
● OK 177ms
● OK 169ms
● OK 273ms
● OK 213ms
● OK 197ms
● OK 225ms
● OK 352ms
● OK 415ms
● OK 218ms

EMBED THIS BADGE

Show that Gambit is monitored on x402-list. Paste this on your site or README, it links back to this live listing.

Gambit listed on x402-list
status
Gambit uptime on x402-list
live uptime
// HTML
<a href="https://x402-list.com/services/gambit?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/gambit.svg" alt="Gambit listed on x402-list" height="28">
</a>
// Markdown
[![Gambit on x402-list](https://x402-list.com/badge/gambit.svg)](https://x402-list.com/services/gambit?utm_source=badge&utm_medium=referral&utm_campaign=embed)
// HTML · live uptime variant
<a href="https://x402-list.com/services/gambit?utm_source=badge&utm_medium=referral&utm_campaign=embed">
  <img src="https://x402-list.com/badge/gambit.svg?data=uptime" alt="Gambit uptime on x402-list" height="28">
</a>

RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]

Earn the verified tier: x402list pays a real call to this endpoint and, if it delivers, the service is delivery-verified. The fee covers the cost of the probe, not the badge; there is no refund if the call does not deliver. Agent and API only, no in-browser signing. See /api.

[ verify this service ($0.25) ]

To request delisting, email info@x402-list.com or update your listing at /services/gambit/update.