{"uid":"cap_O8bwl2GewWyljjF_da6wD","slug":"x402-payment-requirements-probe-6f555ff4","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.","url":"https://well-012-x402-probe.mmelnyk2000.workers.dev/mcp?utm_source=zero.xyz#x402-probe#x402-probe","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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_WgOGaLbOLaKzyyKI2fV9T","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":null,"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 HTTP status, latency, parsed payment metadata, network info, and minimum price.","exampleAgentPrompt":"Can you probe https://api.example.com/some-resource to check if it requires x402 payment — I want to know the HTTP status, latency, whether it returns a valid 402 payment-requirements response, what networks it supports, and the minimum price, without actually paying anything?","exampleUseCases":[{"title":"Auditing an x402-gated API before integration","prompt":"Before I integrate https://payments.myservice.com/data into my app, can you probe it to check whether it uses x402, what the minimum price is, and which blockchain networks it supports — without making any payment?"},{"title":"Monitoring x402 endpoint availability","prompt":"Check if https://api.infoprovider.io/premium-feed is still returning a proper x402 402 response with valid payment-requirements metadata — I want the HTTP status and latency too."},{"title":"Comparing x402 pricing across endpoints","prompt":"Probe https://api.competitor.io/resource for me — does it require x402 payment, what's the minimum price they're charging, and does the payment-requirements schema look valid?"}],"resultDescription":"Returns HTTP status code, response latency in milliseconds, a boolean indicating whether a 402 payment-requirements header was present and parseable, a list of supported blockchain networks, the minimum price required, and a flag indicating whether the payment schema is valid — all without making any payment.","failureModes":["Non-HTTPS URLs rejected — endpoint only probes HTTPS targets","Timeout after ~12 seconds if the target URL is too slow to respond","Response body exceeds 200KB cap — probe may return truncated or error result","More than 5 redirects causes probe to abort","Target URL returns no 402 response — payment-requirements fields will be null/false","Malformed or non-standard x402 headers result in parse failure flag"],"whenToPreferThis":"Choose this endpoint when you need to passively discover and inspect x402 payment requirements on a public HTTPS URL without spending any funds. Ideal for API auditing, integration planning, price comparison, and monitoring x402-gated endpoints. Not suitable for actually executing payments or probing non-HTTPS URLs.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T06:35:48.772Z","isFirstParty":false,"canonicalSlug":"x402-payment-requirements-probe-6f555ff4"}