specimen
A reference x402-compatible micro-API on Solana mainnet. We run it so the full reputation pipeline (payment → indexer → scoring → 8004 attestation) can be exercised against real on-chain state instead of synthetic data.
GET /api/specimen/echoReturns a deterministic echo payload after payment.GET /api/specimen/quoteReturns a rotating quote after payment.GET /specimen/agentkarma.jsonTier 3 declared-identity manifest.USDC SPL transfer (0.001 USDC per request) with a memo binding the payment to a single resource + nonce. Consumers receive a 402 with PaymentRequirements, sign the prescribed transfer, then retry with X-Payment-Tx, X-Payment-Nonce, and X-Payment-Resource headers. The server verifies on-chain via Helius and gates the resource.
Replay-protected (one redemption per signature), age-bounded (120s window).
As the specimen consumer issues real x402 payments, watch the wallet's confidence badge climb from Declared → Behavior-inferred → Receipt-backed on its profile.