{"uid":"cap_LLc2qfQ-mfQTe1e8IQbJE","slug":"proof402-x402-audit-url-intelligence-endpoint-diagnostics-b10310ce","name":"Proof402 x402 Audit — URL Intelligence & Endpoint Diagnostics","description":"Pay-per-call page profiling and x402 endpoint diagnostics, settled in Base-mainnet USDC.","url":"https://proof402.15-204-209-67.sslip.io/api/x402-audit","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"pathParams":{"type":"object"},"queryParams":{"type":"object","required":["url"],"properties":{"url":{"type":"string","format":"uri","description":"A public HTTP or HTTPS URL to inspect."}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"url":"https://example.com/api/paid","score":92,"status":402,"verdict":"compatible","findings":[{"code":"payment_required_present","level":"pass"},{"code":"mainnet_network","level":"pass"}],"requirements":{"schemes":["exact"],"version":2,"networks":["eip155:8453"]}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.25","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":"$0.25/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.25","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.25","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_OjZUVAPDNi7567YHn6gh5","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.25","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Inspects a public URL to assess its x402 payment protocol compatibility, returning a score, verdict, and detailed findings about payment configuration.","exampleAgentPrompt":"Can you run an x402 audit on https://myapi.example.com/paid-endpoint and tell me the compatibility score and whether it's properly configured for Base mainnet USDC payments?","exampleUseCases":[{"title":"Pre-launch x402 endpoint validation","prompt":"Before I go live, can you audit https://api.myproject.io/premium-data and check if it's fully x402-compatible — I want to see the score and any issues with my payment configuration?"},{"title":"Debugging a failing x402 integration","prompt":"My x402-enabled endpoint at https://services.example.com/ai/generate keeps rejecting payments — can you inspect it and tell me exactly what's misconfigured or missing?"},{"title":"Verifying third-party x402 API compatibility","prompt":"I want to call https://thirdparty.io/api/results in my agent but I need to confirm it accepts x402 payments on Base mainnet — can you check its compatibility score and what payment schemes it requires?"}],"resultDescription":"Returns a JSON object containing: the audited URL, a numeric compatibility score (0–100), the HTTP status code observed, a verdict string (e.g. 'compatible'), an array of findings each with a code and pass/fail level, and a requirements object listing accepted payment schemes, x402 version, and supported networks (e.g. eip155:8453 for Base mainnet).","failureModes":["URL is unreachable or returns a non-HTTP error — audit cannot complete","Target URL does not implement x402 at all — verdict will reflect incompatibility","Malformed or non-URI input causes request rejection","Private or firewalled URLs cannot be inspected","Service may return incomplete findings if the target times out"],"whenToPreferThis":"Use this endpoint when you need to programmatically verify whether a specific URL correctly implements the x402 payment protocol — especially before integrating it into an agent workflow, debugging payment failures, or auditing third-party APIs for Base mainnet USDC compatibility. Prefer this over manual inspection when you need a structured score and machine-readable findings rather than a human description.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:38:08.044Z","isFirstParty":false}