{"uid":"cap_wJeRUm-U2dFsTTVpDREsO","slug":"x402-validator-x402-endpoint-conformance-auditor-235c60b6","name":"x402 Validator — x402 Endpoint Conformance Auditor","description":"Verify x402 endpoints with strict-v2 conformance, live 402 behavior, and operator-actionable evidence before agents spend. Built by Gael Leonardo Chulim Gongora (mss_ali / Ali Nain).","url":"https://x402-validator-tools.fly.dev/validate?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["url"],"properties":{"url":{"type":"string","description":"Target merchant URL to audit (http or https)"},"mode":{"enum":["standard","marketplace"],"type":"string","description":"standard | marketplace"},"advise":{"type":"boolean","description":"Attach Inception AI remediation advice (requires INCEPTION_API_KEY server-side)"},"explain":{"type":"boolean","description":"Attach a plain-language AI summary of the result for non-experts (requires INCEPTION_API_KEY server-side)"}}},"responseSchema":{"type":"object","title":"ValidateResponse","required":["url","overall","summary","checks","timestamp"],"properties":{"url":{"type":"string","title":"Url"},"checks":{"type":"array","items":{"type":"object","title":"CheckResultItem","required":["name","status","message"],"properties":{"name":{"type":"string","title":"Name"},"status":{"type":"string","title":"Status"},"details":{"anyOf":[{"type":"object","additionalProperties":true},{"type":"null"}],"title":"Details"},"message":{"type":"string","title":"Message"}},"description":"One check result, flattened for JSON consumers."},"title":"Checks"},"overall":{"type":"string","title":"Overall"},"summary":{"type":"string","title":"Summary"},"ai_advice":{"anyOf":[{"type":"string"},{"type":"null"}],"title":"Ai Advice"},"timestamp":{"type":"string","title":"Timestamp"},"ai_summary":{"anyOf":[{"type":"string"},{"type":"null"}],"title":"Ai Summary"},"latency_ms":{"anyOf":[{"type":"number"},{"type":"null"}],"title":"Latency Ms"}},"description":"Audit response."},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_99Ji_B8OlaT44twUan2Oa","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Audits a target URL for strict x402 protocol conformance, live 402 payment-gate behavior, and operator-actionable compliance evidence before an agent spends funds.","exampleAgentPrompt":"Before I integrate that payment-gated endpoint at https://api.example.com/data, can you run an x402 conformance audit on it in standard mode and give me a plain-language summary of any issues?","exampleUseCases":[{"title":"Pre-integration compliance check","prompt":"I'm about to have my agent start paying the endpoint at https://shop.example.com/premium — can you validate it for x402 conformance in standard mode first and tell me if it's safe to proceed?"},{"title":"Debugging a broken 402 endpoint","prompt":"My x402 endpoint at https://myapi.fly.dev/pay keeps getting rejected by agents — can you audit it and include AI remediation advice so I know exactly what to fix?"},{"title":"Marketplace seller vetting","prompt":"I'm onboarding a new merchant to my x402 marketplace — can you run a marketplace-mode validation on https://vendor.example.com/api and give me a plain-language summary of the results for my non-technical review team?"}],"resultDescription":"Returns a structured audit report containing an overall pass/fail/warn status, a human-readable summary, an array of named per-check results (each with status, message, and optional details), latency in milliseconds, a timestamp, and optionally an AI-generated remediation advice string and/or plain-language explanation of the findings.","failureModes":["Target URL is unreachable or times out — check result will show connection failure","Target does not return a 402 status at all — fails live 402 behavior check","Missing or malformed x402 payment headers — specific checks flagged with details","advise or explain fields require INCEPTION_API_KEY to be configured server-side — omitting key returns null for those fields","Invalid or non-HTTP URL provided — request rejected with validation error","Marketplace mode applied to a non-marketplace endpoint — may produce irrelevant check results"],"whenToPreferThis":"Use this endpoint when an AI agent or developer needs to verify that a specific x402 payment-gated URL is correctly implemented before committing funds or integrating it into a workflow. It is the right choice when you need strict-v2 protocol conformance evidence, per-check diagnostics, and optionally AI-generated fix guidance — rather than just a simple HTTP reachability probe or a generic API health check.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T12:33:05.133Z","isFirstParty":false,"canonicalSlug":"x402-validator-x402-endpoint-conformance-auditor-235c60b6"}