{"uid":"cap_9sEnNK2ciywegv4yu-ic3","slug":"maxwell-x402-doctor-test-purchase-proxy-455ecc22","name":"Maxwell x402 Doctor — Test Purchase Proxy","description":"Test-buy any x402 endpoint (USDC on Base, seller price up to $1). Pass url and the seller price: you pay price + $0.01 + 10% (e.g. $0.05 costs $0.065), charged per attempt, delivered or not. Seller asks less: we buy at its price and keep the rest. Asks more: nothing bought, payment kept. No price: $0.01 lookup returns the exact price. Returns the seller answer, both receipts, a verdict and a report id.","url":"https://api.maxwellinternational.ai/v1/doctor/buy?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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"},"headers":{"type":"object","additionalProperties":{"type":"string"}},"queryParams":{"type":"object","additionalProperties":{"type":"string"}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"verdict":"delivered","disclosure":"You pay for the attempt."}},"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_NfqoRnr-aZJj0QqXdZAQi","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":"Acts as a proxy purchaser that attempts to buy from an x402-gated endpoint on your behalf and returns both receipts (yours and the seller's) along with a clear success/failure verdict.","exampleAgentPrompt":"Run a test purchase on this x402 endpoint for me — use a GET request to that seller URL and tell me the verdict, both receipts, and exactly what came back or how it failed.","exampleUseCases":[{"title":"Verify a live x402 seller endpoint","prompt":"I just deployed an x402 API endpoint and want to confirm it actually works end-to-end — can you do a test purchase on it using a GET request and show me both the buyer and seller receipts plus the verdict?"},{"title":"Debug a failing micropayment API","prompt":"My x402 endpoint seems to be rejecting payments but I'm not sure where it's failing — can you try buying from it with a GET and tell me exactly how and where the transaction failed?"},{"title":"QA check before going live","prompt":"Before I publish this paid API to the marketplace, can you do a doctor test purchase on it with a GET request and confirm the verdict is 'delivered' and both receipts look correct?"}],"resultDescription":"Returns a JSON object with a 'verdict' field (e.g. 'delivered' or a failure state), a disclosure string, and both the buyer's and seller's payment receipts. On failure, the response explains exactly how and where the transaction broke down.","failureModes":["Seller endpoint is unreachable or returns an error — verdict will indicate failure with details","Seller price exceeds $1 USDC cap — request rejected before attempting","Daily rate limit exceeded (one test per wallet per endpoint per day) — returns limit error","Insufficient funds to cover seller price + 1 cent + 10% fee — payment not attempted","Invalid HTTP method provided (only GET, HEAD, DELETE allowed) — schema validation error","Target URL is not a valid x402 endpoint — returns failure verdict with diagnosis"],"whenToPreferThis":"Use this endpoint when you need to test or debug an x402-gated paid API endpoint end-to-end without building your own buyer client. It is specifically designed for developers and agents who want to verify that a micropayment seller endpoint is properly configured, live, and returning its promised content — and who want explicit receipts and failure diagnostics rather than just a ping or HTTP status check.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T04:20:05.453Z","isFirstParty":false,"canonicalSlug":"maxwell-x402-doctor-test-purchase-proxy-455ecc22"}