x402 endpoint doctor: grades a paid route A-F unpaid, with paste-ready fixes. By Crypto Money Maker
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x402 endpoint doctor: probes a paid x402 URL unpaid (never pays) and grades it A-F: 402 on GET / HEAD / empty POST, CORS, v2 PAYMENT-REQUIRED header and v1 body, accepts (USDC asset, EIP-712 domain, Solana feePayer, amounts, payTo), multichain consistency and the Bazaar declaration. Free preview tier: grade, score, status and counts. The paid x402 endpoints /v1/lite ($0.005), /v1/check ($0.02, adds the CDP validate verdict, payee checks and generated fixes) and /v1/site ($0.05, whole origin) return the fix list.
| Name | Required | Description | Default |
|---|---|---|---|
| url | Yes | Full https URL of the paid x402 route (site tier: the origin or API base URL) | |
| method | No | Method your paid route uses (default: from its Bazaar declaration, else GET) |
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
check_x402_endpointDiagnose x402 seller endpoints: what is wrong with your 402 challenge, and how to fix it.
Live x402 endpoint trust/diligence check before you pay it. $0.02/call via x402.
Check any x402 endpoint before your AI agent pays it: trust grade, verdict, and hijack checks.
Trust filter for ERC-8004: only ~3.8% of x402 endpoints hit 5+ payers/30d. Free MCP; x402 upgrade.
Add one secure layer between your agents and this server.
