{"uid":"cap_b6FB1TtzEVgeddyE8yzzw","slug":"agentindex-x402-url-probe-0b5ab76e","name":"AgentIndex x402 URL Probe","description":"Probe any public URL and report if it is an x402 paywall - price, network, payTo, scheme. Shop paywalls before you spend. Try GET /probe/sample.","url":"https://x402.agentindex.world/probe?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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["url"],"properties":{"url":{"type":"string","description":"Public http(s) URL to probe for an x402 paywall."},"method":{"type":"string","description":"HTTP method to use (GET default, or POST)."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["url","reachable","is_x402"],"properties":{"url":{"type":"string"},"pay_to":{"type":"string"},"is_x402":{"type":"boolean"},"network":{"type":"string"},"reachable":{"type":"boolean"},"price_usdc":{"type":"number"},"http_status":{"type":"integer"},"x402_receipt":{"type":"object"}}}}}}},"responseSchema":{"type":"json","example":{"url":"https://x402.shizu.me/weather?lat=48.85&lon=2.35","pay_to":"0x217e5Fe265EB78b29067bF8324ef03a7D8e167C4","scheme":"exact","is_x402":true,"network":"base","reachable":true,"price_usdc":0.004,"http_status":402,"x402_version":1}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_mGaL4N3eVuzYObADCGWB4","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Probes a public URL to detect whether it is protected by an x402 paywall, and returns paywall metadata including price, network, and payment address.","exampleAgentPrompt":"Can you check if https://x402.shizu.me/weather is behind an x402 paywall, and if so, how much it costs and which wallet address to pay?","exampleUseCases":[{"title":"Pre-flight paywall check before calling","prompt":"Before I call https://api.example.com/live-prices, can you probe it to see if it requires an x402 payment, and tell me the price in USDC and the recipient wallet address?"},{"title":"Discover payment terms for unknown endpoint","prompt":"I found this API at https://data.agentindex.world/search — can you check if it has an x402 paywall and what network and scheme it uses before I commit to paying?"},{"title":"Validate x402 support on custom deployment","prompt":"I just deployed my service at https://myservice.io/api/report — can you probe it to confirm it's correctly returning x402 paywall info, including the HTTP 402 status and version?"}],"resultDescription":"Returns a JSON object indicating whether the URL is reachable and x402-gated, including: the URL itself, a boolean is_x402 flag, HTTP status code, price in USDC, payment address (pay_to), network (e.g. 'base'), payment scheme, and x402 protocol version.","failureModes":["URL is unreachable or times out — reachable: false returned","URL does not implement x402 — is_x402: false with actual HTTP status","Malformed or non-HTTP URL provided — validation error","URL redirects in a way that obscures paywall detection","x402 metadata missing or incomplete on the target server"],"whenToPreferThis":"Use this endpoint when you need to discover whether a specific URL is protected by x402 before deciding to pay for it, or when you want to extract payment metadata (price, wallet, network, scheme) without actually executing a payment. Prefer this over generic HTTP probing tools when x402 protocol-specific fields like pay_to, network, price_usdc, and x402_version are needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T07:43:03.254Z","isFirstParty":false,"canonicalSlug":"agentindex-x402-url-probe-0b5ab76e"}