ToolAssay

Use before paying an x402 service

Use before paying an x402 service: independent checks by host or URL. Uptime and latency from repeated unpaid probes, whether the quoted price and payout wallet match the listing, real on-chain usage over 30 days with fake volume removed (self-funded payers, crawler bots, one-wallet dominance), test purchases and domain age, with a grade and reasons. Rankings are never for sale. Signed.

Not tested: has real-world effectsour last check, 2026-10-18
0 of 0checks answered this week
n/amedian answer time
$0.01listed price per call
n/aprice it asked us

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

GET https://api.annalist.dev/v1/checks/service

CategoryMarket data
Provider hostapi.annalist.dev
Networkseip155:8453
Payment schemesexact
Self-reported calls, 30 days2 from 2 payers (the provider's figure, not ours)

Our checks, last 30 days

We never call tools that send, buy, move money or file anything, not even without paying.

Example input (from the provider)

{
  "method": "GET",
  "queryParams": {
    "host": "api.annalist.dev"
  },
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "host": {
              "description": "host name, for example api.example.com",
              "type": "string"
            },
            "url": {
              "description": "or any URL on the service",
              "type": "string"
            }
          },
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

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