{"uid":"cap_DQlXhXHnrAlTi5Je1Ef-H","slug":"x402-endpoint-payability-checker-4613ced4","name":"x402 Endpoint Payability Checker","description":"Is this URL a valid x402 endpoint? Fetches it once unpaid and checks the 402 offer, price, chains and Bazaar listing block.","url":"https://x402-meta.x402tookit.com/x402-payability?utm_source=zero.xyz","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"},"queryParams":{"type":"object","required":["url"],"properties":{"url":{"type":"string","description":"Full https URL of the endpoint, with no credentials"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"url":{"type":["null","string"]},"asOf":{"type":["null","string"]},"payTo":{"type":["array","null"],"items":{"type":"string"}},"source":{"type":["null","string"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"networks":{"type":["array","null"],"items":{"type":"string"}},"pricesUsd":{"type":["array","null"],"items":{"type":"number"}},"sourceUrl":{"type":["null","string"]},"disclaimer":{"type":["null","string"]},"httpStatus":{"type":["null","number"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"resourceUrl":{"type":["null","string"]},"x402Version":{"type":["null","number"]},"canonicalResource":{"type":["boolean","null"]},"descriptionLength":{"type":["null","number"]},"hasBazaarExtension":{"type":["boolean","null"]},"bazaarExtensionValid":{"type":["boolean","null"]}}}}}}},"responseSchema":null,"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_XAeXfh8o5wB4boyfnqR1P","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":"Validates whether a given URL is a live x402 payment-gated endpoint by fetching it unpaid, then inspecting the 402 response, pricing, supported chains, and Bazaar listing details.","exampleAgentPrompt":"Can you check whether https://api.example.com/some-endpoint is a real x402 payment-gated endpoint — tell me the verdict, what price it charges, which chains it supports, and whether it's properly listed on the Bazaar?","exampleUseCases":[{"title":"Pre-integration x402 endpoint audit","prompt":"Before I integrate https://data.myservice.com/premium-feed into my agent, can you verify it's a valid x402 endpoint, confirm what price it charges, which blockchain networks it accepts, and whether its Bazaar listing looks correct?"},{"title":"Debugging a misconfigured x402 service","prompt":"My x402 endpoint at https://tools.acme.com/ai-report isn't getting any buyers — can you probe it and tell me whether it returns a proper 402 response, what the verdict is, and flag any reasons it might be broken or degraded?"},{"title":"Competitor x402 endpoint reconnaissance","prompt":"I'm building a competing service — can you check if https://api.rival.io/summarize is a live x402 endpoint, what it charges in USD, which chains it accepts payment on, and whether it's showing up on the Bazaar?"}],"resultDescription":"Returns a structured verdict object including: whether the URL is a valid x402 endpoint (verdict), x402 protocol version, list of USD prices, supported blockchain networks, payTo wallet addresses, HTTP status code received, Bazaar listing presence and validity flags, a human-readable summary and reasons, a degraded signal, and a timestamp (asOf).","failureModes":["Target URL is not reachable or times out — httpStatus null, verdict negative","URL returns 200 instead of 402 — flagged as not an x402 endpoint","Malformed 402 response with missing price or network fields — reasons list populated","Bazaar extension present but invalid — bazaarExtensionValid false","URL contains credentials or is not a full https URL — input validation error","Target endpoint rate-limits or blocks the probe request"],"whenToPreferThis":"Use this endpoint when you need to programmatically verify that a specific URL is a functioning x402 payment-gated resource before integrating it, listing it, or purchasing from it. Ideal for agent workflows that need to validate third-party x402 services, debug x402 configuration issues, or confirm Bazaar listing correctness. Prefer this over manual inspection or generic HTTP probing tools when you need structured x402-specific metadata including price, networks, and Bazaar status in a single call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:20:42.702Z","isFirstParty":false,"canonicalSlug":"x402-endpoint-payability-checker-4613ced4"}