{"uid":"cap_b0Ex4cWG-708fOGinP9QF","slug":"x402-radar-conformance-probe-e87bc97c","name":"x402 Radar Conformance Probe","description":"Live x402 conformance probe: url=<endpoint>, returns whether it serves a valid 402 handshake, actual price/asset/network/payTo, latency. Verify before you pay. By x402 Radar.","url":"https://remind-host-lots-rouge.trycloudflare.com/api/check","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"object","example":{"x402":true,"alive":true,"scheme":"exact","status":402,"checked":"https://api.exa.ai/search","network":"base","latency_ms":340,"valid_handshake":true,"price_usd_if_usdc":0.007},"properties":{"at":{"type":"string"},"x402":{"type":"boolean"},"alive":{"type":"boolean"},"asset":{"type":"string"},"payTo":{"type":"string"},"scheme":{"type":"string"},"status":{"type":"number"},"checked":{"type":"string"},"network":{"type":"string"},"latency_ms":{"type":"number"},"price_atomic":{"type":"string"},"x402_version":{"type":"number"},"valid_handshake":{"type":"boolean"},"price_usd_if_usdc":{"type":"number"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_QGLq726kqHvYvmQH3BXwr","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether a given URL serves a valid x402 payment handshake and returns its price, asset, network, payTo address, and latency.","exampleAgentPrompt":"Before I pay, can you probe https://api.exa.ai/search and tell me if it's a valid x402 endpoint — what's the price, which network and asset it uses, the payTo address, and how fast it responds?","exampleUseCases":[{"title":"Pre-payment x402 conformance check","prompt":"Check whether https://api.someservice.com/inference actually serves a valid x402 handshake before I integrate it — I need to know the price, network, asset, and payTo address."},{"title":"Comparing x402 endpoints by latency","prompt":"Probe https://api.exa.ai/search for me and tell me its x402 latency and whether the handshake is valid — I'm trying to compare response times across a few paid APIs."},{"title":"Debugging a broken x402 integration","prompt":"Something seems off with https://myapp.com/api/generate — can you check if it's alive and returning a proper x402 402 status with a valid scheme and price?"}],"resultDescription":"Returns a JSON object indicating whether the probed URL is alive, x402-compliant, and serving a valid 402 handshake. Includes the detected price in USD (if USDC), atomic price, asset type, blockchain network, payTo wallet address, x402 scheme (e.g. 'exact'), x402 protocol version, HTTP status code returned, and round-trip latency in milliseconds.","failureModes":["Probed URL is unreachable — alive: false, no payment data returned","URL does not serve a 402 status — x402: false, valid_handshake: false","Malformed or non-conformant 402 response — valid_handshake: false with partial fields","Network timeout leading to high latency_ms or missing response","Input URL is invalid or missing — request rejected with error","Transient Cloudflare tunnel instability causing probe failures"],"whenToPreferThis":"Use this endpoint when an AI agent needs to verify that a third-party x402-enabled API is live and correctly configured before committing a payment. It is the right choice when you want to inspect the price, asset, network, and payTo address of an x402 endpoint without actually paying. Prefer this over manually parsing 402 responses yourself, or when building automated pipelines that must gate payment execution on valid handshake confirmation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:42:40.629Z","isFirstParty":false}