Api Endpoint

agents.factstamp.dev

A two-cent probe of the FactStamp engine: one small claim in, one cited answer out, receipted. Send a dated figure, a company name, a DOI/arXiv id or a package@version and get the verdict, the value …

Open interactive test console

Offering

Provider: agents.factstamp.dev
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Other
Delivery: Not provided
Pricing model: Not provided
x402 version: 1

Endpoint context

URL: https://agents.factstamp.dev/probe
MIME type: Not provided
First seen: 2026-10-23T23:28:24.155Z
Last seen: 2026-10-25T23:50:06.977Z
Tags: None supplied

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.02 USDC
Atomic price: 20000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "20000",
    "payTo": "0xc3bcd24a2b350cc73b8516b2a0539a323b42cc32"
  }
]

Observed health

Status: Healthy
Latest latency: 263 ms
Average latency: 959 ms
HTTP status: 402
Last checked: 2026-11-02T08:22:30.511Z
Reachability: 100% over 7 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{}

Output schema

null