ToolAssay

Buy a standing re-check of one citation or one package version, when an answer h

Buy a standing re-check of one citation or one package version, when an answer has to stay true rather than be true once: re-checked every day for 30 days. US$0.50 the month — 1.7 cents a check, under a 2-cent lookup. The first check is answered and signed on purchase, and each real change (a retraction, a new advisory, a yanked version) gets its own signed receipt. Pay per call here, or redeem a prepaid pack code (10 credits). Returns a read URL and a token shown once.

Not tested: has real-world effectsour last check, 2026-10-10
0 of 0checks answered this week
n/amedian answer time
$0.5listed 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

POST https://factstamp.agentrails.workers.dev/watch

CategoryCode and developer
Provider hostfactstamp.agentrails.workers.dev
Networkseip155:8453
Payment schemesexact
Self-reported calls, 30 days1 from 1 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)

{
  "body": {
    "kind": "citation",
    "subject": "10.1038/nature12373",
    "webhook": "https://example.com/factstamp/hook"
  },
  "bodyType": "application/json",
  "method": "POST",
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "properties": {
    "input": {
      "additionalProperties": true,
      "properties": {
        "body": {
          "type": "object"
        },
        "bodyType": {
          "const": "application/json"
        },
        "method": {
          "const": "POST"
        },
        "type": {
          "const": "http"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "additionalProperties": true,
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "const": "json"
        }
      },
      "required": [
        "type",
        "example"
      ],
      "type": "object"
    }
  },
  "required": [
    "input",
    "output"
  ],
  "type": "object"
}

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