{"uid":"cap_Akfg_skBxvuXwS6sCUPza","slug":"x402-payment-requirements-probe-ddca7e59","name":"x402 Payment Requirements Probe","description":"Unpaid probe of a public https URL for x402 payment requirements ($0.005 USDC). Never pays. Returns HTTP status, latency, whether 402/payment-requirements parse, networks, min price, schema flag. https only; caps ~12s, 200KB, 5 redirects. Factual only; as is, no guarantee. Not a rating or certification. Provided as is, with no warranty or guarantee of accuracy or fitness. Nothing is stored.","url":"https://well-012-x402-probe.mmelnyk2000.workers.dev/api/x402-probe?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["url"],"properties":{"url":{"type":"string","description":"https URL of an x402 resource or MCP origin to probe unpaid. http/file/data/localhost/private IPs rejected."},"method":{"type":"string","description":"Optional HTTP method: GET (default) or POST (empty JSON body)."}}},"responseSchema":{"type":"object","additionalProperties":true},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_EEcAOJxtlieCowAnsuWuN","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Probes a public HTTPS URL to detect x402 payment requirements without paying, returning status, latency, parsed payment info, networks, and minimum price.","exampleAgentPrompt":"Can you probe https://api.example.com/resource to check whether it requires x402 payment — without actually paying — and tell me the minimum price, supported networks, and whether the payment schema parses correctly?","exampleUseCases":[{"title":"Discover x402 pricing before paying","prompt":"Before my agent pays to call https://api.some-service.com/data, can you check what the x402 payment requirements are — minimum price, supported networks, and whether the schema looks valid — without actually making a payment?"},{"title":"Audit MCP server for payment requirements","prompt":"I want to know if https://mcp.mytool.dev is gating its API behind x402 payments — can you probe it and tell me the HTTP status, latency, and any payment details it returns?"},{"title":"Monitor x402 endpoint availability","prompt":"Check whether https://pay.myapp.io/generate is still returning a proper x402 payment-required response with a parseable schema, and let me know the current latency."}],"resultDescription":"Returns an object with HTTP status code, response latency, a boolean indicating whether a 402/payment-requirements response was detected, parsed payment networks, minimum price, a schema validity flag, and any redirect information — without ever sending payment.","failureModes":["Non-HTTPS URLs (http, file, data, localhost, private IPs) are rejected with an error","Requests that exceed ~12 seconds timeout are capped","Responses larger than ~200KB are truncated or rejected","More than 5 redirects causes the probe to abort","If the remote server returns no x402 headers, payment fields will be absent or null","Malformed payment-requirements headers may cause schema parse flag to be false"],"whenToPreferThis":"Use this endpoint when you need to discover whether a public HTTPS URL implements x402 payment gating before committing any funds. Ideal for agents that need to inspect payment requirements, compare prices across x402 services, validate that a 402 response is well-formed, or build dashboards of x402-enabled APIs — without incurring the cost or side effects of actually paying. Not suitable for non-HTTPS targets or for endpoints behind private networks.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T12:32:32.558Z","isFirstParty":false,"canonicalSlug":"x402-payment-requirements-probe-6f555ff4"}