{"resource":"https://numberintel.dev/v1/attest","service":null,"areas":["ai_inference","onchain_reads"],"answering":true,"http_status":402,"latency_ms":456,"price_usdc":0.25,"buyers_30d":1,"calls_30d":6,"description":"Signed settlement attestation: we make a REAL x402 purchase from your target endpoint (up to $0.1), grade the delivered response against its advertised schema, and return an EIP-191-signed attestation embedding the on-chain USDC receipt. Pr","id":"ebe74f1ef0fd","category":"Blockchain reads","accuracy":null,"tool_calls":null,"checked_day":"2026-10-14","page":"https://velliumandco.com/sellers/ebe74f1ef0fd"}