{"uid":"cap_3ldByn_qPNNXAHk6W6FE6","slug":"x402-endpoint-probe-3ba3197f","name":"x402-endpoint-probe","description":"x402 probe: requests a URL without paying and decodes its 402 payment terms: x402 version, accepted schemes and networks (CAIP-2), price in USDC (atomic and human), payTo address, asset contract, max timeout, resource description, and whether the terms came from the PAYMENT-REQUIRED header or the JSON body. Tells an agent exactly what a paid API costs before it commits. $0.01 per probe.","url":"https://intel.rallylive.ca/dev/x402-probe","method":"GET","headers":{},"bodySchema":{"type":"object","$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","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_yFXynuhY1rChPXBqjNirs","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Probes a URL for x402 payment requirements and decodes its payment terms before committing to pay","exampleAgentPrompt":"Before we pay anything, can you probe https://api.example.com/data to check what x402 payment terms it requires — what network, price in USDC, and address it wants payment sent to?","exampleUseCases":[{"title":"Pre-flight cost check before paying","prompt":"Before my agent calls that paid endpoint at https://api.someservice.com/report, can you probe it and tell me exactly how much it costs in USDC, which network the payment goes to, and what address receives it?"},{"title":"Auditing third-party x402 APIs","prompt":"I'm evaluating a few paid APIs for our pipeline — can you probe https://data.thirdparty.io/endpoint and decode all its x402 payment terms, including the accepted schemes, CAIP-2 networks, and whether the terms came from the header or the response body?"},{"title":"Debugging a 402 payment integration","prompt":"Our agent is hitting a 402 on https://internal.myplatform.com/premium and we can't figure out the exact payment parameters — can you probe it and show me the full decoded payment terms including asset contract, max timeout, and the human-readable USDC price?"}],"resultDescription":"Returns the decoded x402 payment terms for the probed URL: x402 protocol version, accepted payment schemes, CAIP-2 network identifiers, price in USDC expressed both as atomic units and as a human-readable decimal, the payTo wallet address, the asset (token) contract address, maximum timeout, a description of the resource being sold, and which part of the HTTP response the payment terms were sourced from (PAYMENT-REQUIRED header or JSON body).","failureModes":["URL does not return a 402 response — endpoint may not require payment or may be down","Target URL is unreachable or times out","URL returns a 402 but does not conform to x402 spec — terms may be unparseable","Invalid or malformed URL input","Network or DNS errors reaching the target","Target API requires specific headers or auth before surfacing payment terms"],"whenToPreferThis":"Use this endpoint when an AI agent needs to discover and evaluate the payment terms of an x402-enabled API before committing funds. It is the right choice when you want to pre-flight a paid API call to check cost, network, and payment address without triggering a real payment. Prefer this over attempting a direct call when budget validation, scheme compatibility checking, or debugging a 402 integration is needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T13:11:06.395Z","isFirstParty":false}