{"slug":"agents-factstamp-dev-probe-df31c4","title":"A two-cent probe of the FactStamp engine","host":"agents.factstamp.dev","method":"POST","resource":"https://agents.factstamp.dev/probe","category":"code","description":"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 and the source it rests on with our retrieval time — the same engine and the same sources the full-pr","price_listed":0.02,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"claim":"Australia's cash rate target is 3.60%","kind":"figure"},"bodyType":"application/json","method":"POST","type":"http"},"output_schema":{"$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"},"history":[],"description_full":"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 and the source it rests on with our retrieval time — the same engine and the same sources the full-price doors read. Unknown is a valid answer and nothing is invented. Paid per call in USDC on Base; no pack code and no free tier.","last_updated":"2026-10-21T19:25:09.859Z","schemes":["exact"]}