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. Proof-of-real-delivery for directories, reputation systems and sellers.
# 1. Ask the endpoint what it costs (no payment, no wallet needed): curl -i -X POST 'https://numberintel.dev/v1/attest' # -> HTTP/1.1 402 Payment Required # the response carries the price, asset and pay-to address. # 2. Pay and retry with any x402 client: npx x402-fetch -X POST 'https://numberintel.dev/v1/attest'
Endpoint: https://numberintel.dev/v1/attest. Operated by numberintel.dev, not by Animica. Price and availability were correct at the last probe on 2026-10-01 and are set by the operator, who may change them.
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