{"uid":"cap_43yt9sSv4bzMMIpL-4pnL","slug":"x402-seller-doctor-x402-endpoint-auditor-fff0a847","name":"x402 Seller Doctor – x402 Endpoint Auditor","description":"Pay-per-call B2B sales lead and procurement intelligence plus Base wallet data for agents. Search EU tenders/RFPs or inspect a Base wallet. Payments use x402 USDC on Base.","url":"https://eu-tender-x402-v3-production.up.railway.app/api/x402-seller-doctor?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","description":"Public x402 endpoint to audit"},"body":{"description":"Optional JSON body for non-GET probes"},"method":{"type":"string","default":"GET","description":"HTTP method"}}},"responseSchema":{"type":"json","example":{"score":100,"method":"GET","product":"x402 Seller Doctor","summary":{"checks":10,"failed":0,"passed":10,"critical_failed":0},"verdict":"ready","findings":[],"observed":{"http_status":402,"x402_version":2,"accepts_count":1},"audited_url":"https://api.example.com/paid"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_c-oeqjBx5cRY9iA8bRPHd","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Audits a public x402-enabled API endpoint to verify it is correctly configured, returns a compliance score, and lists any failed checks.","exampleAgentPrompt":"Run the x402 Seller Doctor on https://api.example.com/paid using a GET request and tell me the compliance score, verdict, and any failing checks.","exampleUseCases":[{"title":"Pre-launch x402 endpoint verification","prompt":"Before I go live, run the x402 Seller Doctor against https://myapi.example.com/premium-data with a GET to make sure it passes all checks and is ready to accept payments."},{"title":"Debugging a broken x402 seller","prompt":"My x402 endpoint at https://myservice.com/api/data keeps getting rejected by clients — can you audit it with the Seller Doctor using GET and tell me exactly which checks are failing?"},{"title":"Automated CI compliance check","prompt":"Check whether https://staging.myapp.io/report is x402-compliant using a POST method so I can decide if the staging build is ready to promote to production."}],"resultDescription":"Returns a JSON object with an integer compliance score (0–100), a verdict string (e.g. 'ready'), a summary of checks run (total, passed, failed, critical failed), a list of specific findings for any failures, and observed HTTP metadata (status code, x402 version, accepts count) from probing the target URL.","failureModes":["Target URL is unreachable — network error or timeout with no score returned","Target URL does not return a 402 status — audit fails with critical findings","Malformed URL input — validation error before probe is attempted","Target requires authentication the auditor cannot provide — incomplete audit results","x402 version mismatch — observed version not matching expected spec"],"whenToPreferThis":"Use this endpoint when you need to programmatically verify that an x402-enabled API endpoint is correctly configured before publishing it, integrating it into an agent workflow, or listing it on a marketplace. It is specifically designed for the x402 protocol and returns structured pass/fail findings that generic HTTP testers do not provide.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T04:25:20.767Z","isFirstParty":false,"canonicalSlug":"x402-seller-doctor-x402-endpoint-auditor-fff0a847"}