The smallest paid round trip: pay $0.01 with x402 and get a confirmation payload that proves your agent's whole payment loop works — wallet, signing, 402 parsing, on-chain settlement.
GET /health — unauth, returns JSON.GET /openapi.json — unauth, machine-readable contract.GET /premium — $0.01 on base. Pay with x402 to access.Point a payagent-powered client at /premium.