x402 List

x402 Protocol Service Directory

MilliAPI

Data PAYMENT-READY

payment-ready until 2026-09-09

Micropaid deterministic web utilities for AI agents via x402 on Base: AI crawler policy checks, llms.txt discovery, page metadata extraction, and AI web-readiness audits.

Pay from $0.001 to $0.005 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

listed 2026-09-02 · no on-chain settlement recorded yet

BASE URL https://milliapi.com WEBSITE https://milliapi.com ENDPOINTS 4 NETWORK Base ASSET USDC MEMBER SINCE 2026-09-02 MONITORED SINCE 2026-09-02

VERDICT

ranking generation 3

solid 89/100 #139 of 266 in Data by measured score

What the score read on this service: status online, 100% uptime 24h (no 30d window yet), 286ms 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 Data, 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 266 listings, this one among them. That set is wider than the 266 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 DATA

Other Data 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
ThirdMade Shelf strong 99 100% ---
API Acre strong 99 99.7% ---
IPIntel.ai x402 Tools strong 99 100% ---
WebberSites x402 Data API strong 99 100% ---
glim.sh strong 98 100% ---
5 of 265 other ranked services in Data · see the whole category

ASSESSMENT

updated 2h 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
-
uptime 7d
-
uptime 30d
-
uptime 90d
-
response p95
286ms
avg response
286ms
total checks
1

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 $0.005 (p10 in Data)
price (min)
$0.001
price (max)
$0.005
category percentile (min)
p10 in Data
category percentile (max)
p11 in Data
endpoints / prices
4 / 3
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
1d
registrar
Name.com, Inc.
hosting
custom
domain created
2026-09-01

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.

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
GET /api/agent-web-audit $0.005 Base USDC header
GET /api/ai-robots-check $0.001 Base USDC header
GET /api/llms-txt-check $0.001 Base USDC header
GET /api/page-metadata $0.002 Base USDC header
4 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to GET /api/agent-web-audit returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i 'https://milliapi.com/api/agent-web-audit'
// 402 response (captured by monitor) · 4 payloads · click to expand
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x55E6024b4eB9b9325537c7453F53fDA5413B8417",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://milliapi.com/api/ai-robots-check",
      "tags": [
        "robots",
        "ai-crawlers",
        "ai-search",
        "crawler-policy",
        "web"
      ],
      "iconUrl": "https://milliapi.com/icon.svg",
      "mimeType": "application/json",
      "description": "Check robots.txt homepage permissions for major AI crawlers including GPTBot, OAI-SearchBot, ClaudeBot, Google-Extended, PerplexityBot and Applebot-Extended.",
      "serviceName": "MilliAPI"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "url": "https://example.com"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "origin": "https://example.com",
              "robotsTxt": {
                "status": 404,
                "present": false
              },
              "aiCrawlerHomepageAccess": {
                "GPTBot": {
                  "reason": "No matching robots.txt group",
                  "allowed": true
                }
              }
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "type": "object",
                  "required": [
                    "url"
                  ],
                  "properties": {
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "description": "Public HTTPS URL on the site to inspect"
                    }
                  }
                }
              },
              "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": "0x55E6024b4eB9b9325537c7453F53fDA5413B8417",
        "amount": "1000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://milliapi.com/api/llms-txt-check",
      "tags": [
        "llms-txt",
        "ai-discovery",
        "ai-search",
        "web",
        "metadata"
      ],
      "iconUrl": "https://milliapi.com/icon.svg",
      "mimeType": "application/json",
      "description": "Check whether a website publishes llms.txt and return its status, byte size, and a bounded preview for agent discovery workflows.",
      "serviceName": "MilliAPI"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "url": "https://example.com"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "origin": "https://example.com",
              "llmsTxt": {
                "bytes": 0,
                "status": 404,
                "present": false,
                "preview": null
              }
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "type": "object",
                  "required": [
                    "url"
                  ],
                  "properties": {
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "description": "Public HTTPS URL on the site to check"
                    }
                  }
                }
              },
              "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": "0x55E6024b4eB9b9325537c7453F53fDA5413B8417",
        "amount": "2000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://milliapi.com/api/page-metadata",
      "tags": [
        "metadata",
        "open-graph",
        "json-ld",
        "seo",
        "web"
      ],
      "iconUrl": "https://milliapi.com/icon.svg",
      "mimeType": "application/json",
      "description": "Extract title, description, canonical URL, robots meta, Open Graph, H1 count and JSON-LD count from a public HTTPS page.",
      "serviceName": "MilliAPI"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "url": "https://example.com"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "title": "Example Domain",
              "target": "https://example.com/",
              "h1Count": 1,
              "canonical": null,
              "openGraph": {
                "type": null,
                "image": null,
                "title": null,
                "description": null
              },
              "description": null,
              "jsonLdBlocks": 0
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "type": "object",
                  "required": [
                    "url"
                  ],
                  "properties": {
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "description": "Public HTTPS page to inspect"
                    }
                  }
                }
              },
              "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": "0x55E6024b4eB9b9325537c7453F53fDA5413B8417",
        "amount": "5000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://milliapi.com/api/agent-web-audit",
      "tags": [
        "ai-agents",
        "web-audit",
        "ai-search",
        "repair-artifacts",
        "change-baseline"
      ],
      "iconUrl": "https://milliapi.com/icon.svg",
      "mimeType": "application/json",
      "description": "Decision-ready AI web audit in one paid call. Returns a readiness verdict, blocking issues, evidence, ready-to-apply or review-required repair artifacts, prioritized fixes, 0-100 score, crawler policy, robots.txt and llms.txt status, canonical/indexability, Open Graph, JSON-LD, headings, major AI-crawler access, and a portable baseline for future change detection.",
      "serviceName": "MilliAPI"
    },
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "type": "http",
            "method": "GET",
            "queryParams": {
              "url": "https://example.com"
            }
          },
          "output": {
            "type": "json",
            "example": {
              "page": {
                "title": "Example Domain",
                "h1Count": 1,
                "noindex": false,
                "canonical": null,
                "openGraph": {
                  "type": null,
                  "image": null,
                  "title": null,
                  "description": null
                },
                "description": null,
                "jsonLdBlocks": 0
              },
              "cache": {
                "hit": false,
                "scope": "best_effort_warm_runtime",
                "ageSeconds": 0,
                "ttlSeconds": 600
              },
              "score": 45,
              "target": "https://example.com/",
              "product": "MilliAPI AI Web Readiness Audit",
              "summary": "No blocking issue detected. Improvements are prioritized below.",
              "verdict": "needs_work",
              "blockers": [],
              "evidence": [],
              "checkedAt": "2026-09-01T00:00:00.000Z",
              "discovery": {
                "llmsTxt": {
                  "status": 404,
                  "present": false
                },
                "robotsTxt": {
                  "status": 404,
                  "present": false
                }
              },
              "baselineToken": "<portable baseline token for future change detection>",
              "checksBundled": [
                "page_metadata",
                "robots_txt",
                "llms_txt",
                "major_ai_crawler_homepage_access"
              ],
              "recommendations": [
                {
                  "id": "add_canonical",
                  "issue": "No canonical URL was detected.",
                  "action": "Add a canonical link element.",
                  "evidence": "canonical missing",
                  "priority": "high"
                }
              ],
              "repairArtifacts": {
                "count": 1,
                "artifacts": [
                  {
                    "id": "canonical_link",
                    "path": "<head>",
                    "title": "Canonical link element",
                    "format": "text/html",
                    "content": "<link rel=\"canonical\" href=\"https://example.com/\">",
                    "applyMode": "ready_to_apply",
                    "recommendationId": "add_canonical"
                  }
                ],
                "fillRequired": 0,
                "readyToApply": 1,
                "reviewRequired": 0
              },
              "agentRecommendation": "improve_before_prioritizing_discovery",
              "aiCrawlerHomepageAccess": {
                "GPTBot": {
                  "reason": "No matching robots.txt group",
                  "allowed": true
                }
              }
            }
          }
        },
        "schema": {
          "type": "object",
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "required": [
            "input"
          ],
          "properties": {
            "input": {
              "type": "object",
              "required": [
                "type",
                "method"
              ],
              "properties": {
                "type": {
                  "type": "string",
                  "const": "http"
                },
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "type": "object",
                  "required": [
                    "url"
                  ],
                  "properties": {
                    "url": {
                      "type": "string",
                      "format": "uri",
                      "description": "Public HTTPS page to audit. Private IPs, localhost, credentials, and non-standard ports are rejected."
                    }
                  }
                }
              },
              "additionalProperties": false
            },
            "output": {
              "type": "object",
              "required": [
                "type"
              ],
              "properties": {
                "type": {
                  "type": "string"
                },
                "example": {
                  "type": "object",
                  "required": [
                    "product",
                    "target",
                    "checkedAt",
                    "score",
                    "verdict",
                    "agentRecommendation",
                    "summary",
                    "blockers",
                    "recommendations",
                    "evidence",
                    "checksBundled",
                    "repairArtifacts",
                    "baselineToken",
                    "page",
                    "discovery",
                    "aiCrawlerHomepageAccess"
                  ],
                  "properties": {
                    "page": {
                      "type": "object"
                    },
                    "cache": {
                      "type": "object"
                    },
                    "score": {
                      "type": "number",
                      "maximum": 100,
                      "minimum": 0
                    },
                    "target": {
                      "type": "string"
                    },
                    "pricing": {
                      "type": "object"
                    },
                    "product": {
                      "type": "string"
                    },
                    "summary": {
                      "type": "string"
                    },
                    "verdict": {
                      "enum": [
                        "ready",
                        "mostly_ready",
                        "needs_work",
                        "blocked"
                      ],
                      "type": "string"
                    },
                    "blockers": {
                      "type": "array"
                    },
                    "evidence": {
                      "type": "array"
                    },
                    "checkedAt": {
                      "type": "string"
                    },
                    "discovery": {
                      "type": "object"
                    },
                    "baselineToken": {
                      "type": "string"
                    },
                    "checksBundled": {
                      "type": "array"
                    },
                    "recommendations": {
                      "type": "array"
                    },
                    "repairArtifacts": {
                      "type": "object"
                    },
                    "agentRecommendation": {
                      "type": "string"
                    },
                    "aiCrawlerHomepageAccess": {
                      "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/milliapi/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
09-02 · uptime 100.0% · 278ms avg09-0209-02
30d UPTIME 100%
RESPONSE TIME
09-02 · 278ms avg09-02 · 278ms avg09-0209-02
AVG RESP 298ms
PRICE (captured 402, USD)
building price history ($0.0015)

Median across 4 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)
building assessment history (1 day so far)

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

VOLUME (on-chain settlement, USD)
09-01 · $0.0409-02 · $0.00peak $0.0409-0109-02
DISTINCT BUYERS
09-01 · 2 buyers09-02 · 2 buyerspeak 2 buyers09-0109-02

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-09-02 · last up 2026-09-02

  • 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 (9) live · click to expand
TIME STATUS RESP CAUSE
● SLOW 452ms
● OK 268ms
● OK 153ms
● OK 128ms
● OK 156ms
● SLOW 630ms
● OK 172ms
● OK 433ms
● OK 286ms

EMBED THIS BADGE

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

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