Runs live diligence on an x402-metered endpoint before you pay it: verifies its 402 payment challenge is spec-compliant, checks the price against market baselines, inspects the payTo address on-chain (Base), checks third-party directory presence, and checks basic infra hygiene, and detects possible upstream API resale with evidence-based markup estimates. Returns a 0-100 score, a pass/caution/fail verdict, and per-check evidence.; Compares an x402 endpoint's price (or a given price/category pair) against market percentiles from our daily radar snapshot of the x402 ecosystem.; Free possible-reseller preview. Matches an endpoint's live unpaid 402 description/schema, or a supplied description and price, against a dated catalog of well-known upstream APIs and reports confidence, matched signals, and documented markup math without asserting resale as fact.
POST https://diligence.x402supply.com/tools/check_endpointPOST https://diligence.x402supply.com/tools/compare_price (free)POST https://diligence.x402supply.com/tools/reseller_check (free)MCP endpoint: https://diligence.x402supply.com/mcp
Pay per call in USDC on Base via x402. Part of https://x402supply.com