factstamp.agentrails.workers.dev
Call it before you send, file or publish a document that quotes figures, names companies or cites papers. Post the text and every checkable claim comes back verified against dated primary sources, as one signed bundle with a per-claim receipt and its licence. Claims we cannot answer are named and never charged, and the preview is free. Verdicts: verified, stale, contradicted, unknown.
Offering
- Provider
- factstamp.agentrails.workers.dev
- Method
- POST
- Offering type
- Api Endpoint
- Transport type
- http
- Category
- Web Search Research
- Delivery
- Not provided
- Pricing model
- Not provided
- x402 version
- 2
Endpoint context
- URL
https://factstamp.agentrails.workers.dev/document- MIME type
- Not provided
- First seen
- 2026-10-16T01:52:40.118Z
- Last seen
- Tags
- None supplied
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 0.25 USDC
Atomic price: 250000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
{
"scheme": "exact",
"network": "eip155:8453",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "250000",
"payTo": "0xc3bcd24a2b350cc73b8516b2a0539a323b42cc32"
}
]Observed health
- Status
- Reachable
- Latest latency
- 416 ms
- Average latency
- 1266 ms
- HTTP status
- 405
- Last checked
- Reachability
- 100% over 14 checks
Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.
Input schema
{
"additionalProperties": true,
"properties": {
"body": {
"type": "object"
},
"bodyType": {
"const": "application/json"
},
"method": {
"const": "POST"
},
"type": {
"const": "http"
}
},
"required": [
"type",
"method"
],
"type": "object"
}Output schema
{
"additionalProperties": true,
"properties": {
"example": {
"type": "object"
},
"type": {
"const": "json"
}
},
"required": [
"type",
"example"
],
"type": "object"
}