{"product":"MCP deployment contract check","paid_value":"Required-tool checks, per-tool input-schema fingerprints, baseline drift comparison, detailed evidence and a publicly verifiable settlement-linked receipt.","price":{"display":"$0.10","amount":"100000","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","network":"eip155:8453"},"method":"POST","url":"https://drkdm4jd-8767.uks1.devtunnels.ms/api/certify","examples":{"contract":{"example_only":true,"body":{"target_url":"https://your-server.example/mcp","check_profile":"basic","required_tools":["search"]}},"repeat":{"instructions":"Save certification.evidence.contract_baseline from a paid response; send it as baseline_schema_hashes on the next deployment check."}},"decisions":{"ALLOW":"Requested checks passed at the observation time.","BLOCK":"Missing required tool, invalid schema or declared protocol mismatch.","REVIEW":"Schema changed or evidence incomplete; do not assume compatibility."},"limits":"Target tools execute only when an explicit server-configured safe fixture is selected. Exact schema drift is not proof of a breaking change. Not a security audit or uptime guarantee.","payment":{"protocol":"x402 V2","challenge_header":"PAYMENT-REQUIRED","retry_header":"PAYMENT-SIGNATURE","response_header":"PAYMENT-RESPONSE"},"quickstart":"https://drkdm4jd-8767.uks1.devtunnels.ms/llms.txt"}