x402 seller trust and payment preflight

Inspect public x402 seller metadata, OpenAPI and health signals before an autonomous agent spends funds.

Paid endpoints support x402 V2 with USDC on Base or Solana mainnet. Check the returned HTTP 402 payment requirements and network before paying; prepaid credits and subscriptions use separate authorized checkout flows.

x402 Payment Preflight · $0.05
POST /v1/x402-payment-preflight

Tool Call Dry-Run Guard · $0.01
POST /v1/tool-call-dry-run

Agent guide · OpenAPI · x402 manifest