Pay-per-Request API Testing Endpoints

x402 is an open protocol for machine-to-machine payments over HTTP. It extends the 402 Payment Required status code with a standardised header-based flow — clients receive payment requirements, sign a transaction, and attach it as a header on retry. The server verifies and settles on-chain before serving the response. No accounts, no sessions, no API keys.

All endpoints below run on testnet networks and cost $0.001 per request. Payment verification and settlement is handled by the GoPlausible facilitator. Each route accepts all three networks but presents its primary network first.