x402 API Playground

Pick an endpoint, review the sample input, hit Run — a real request fires from your browser. No signup, no API key, no wallet signature.

Free trial: the trial quota is applied server-side, per your IP — 10 calls/day for endpoints ≤ $0.002, 5/day up to $0.01, 2/day up to $0.10. Watch the X-Free-Remaining value under the result. When the trial runs out, the endpoint returns a standard 402 with payment instructions (pay in USDC on Base, sign with any wallet, retry with X-PAYMENT).
— press Run —
Notes