{"uid":"cap_7X-RKdjJM850Ohet8iQJj","slug":"old-colony-web-x402-self-test-payment-5e0c6c9b","name":"Old Colony Web x402 Self-Test Payment","description":"For $0.002, test a real x402 v2 exact USDC payment on Base and receive an intentionally simple JSON handler result. The successful final HTTP response and PAYMENT-RESPONSE header (not the body alone) are evidence of the x402 settlement flow. No refund, wallet-balance check, blockchain-finality guarantee, variable tip, data lookup or downstream action. Do not retry an ambiguous charge blindly.","url":"https://api.oldcolonyweb.com/v1/payment/self-test?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","properties":{},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"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_-C3PjzmszqBMt9JIkDncf","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":"Executes a real $0.002 USDC x402 v2 payment on Base as a self-test, returning a simple JSON response as proof of successful payment settlement.","exampleAgentPrompt":"Run a live x402 v2 self-test payment of $0.002 USDC on Base — I want to confirm the full settlement flow works and see both the JSON result and the PAYMENT-RESPONSE header.","exampleUseCases":[{"title":"Verify x402 agent payment pipeline","prompt":"Run an x402 v2 self-test to confirm my agent's wallet can actually settle a real $0.002 USDC micropayment on Base — I need proof the payment flow works before I wire up production endpoints."},{"title":"Debug x402 settlement integration","prompt":"My x402 integration might be broken — can you fire a real $0.002 USDC self-test on Base and show me the PAYMENT-RESPONSE header so I can see whether settlement is completing correctly?"},{"title":"Onboard new agent to x402 payments","prompt":"I'm setting up a new AI agent and want to validate it can handle x402 payments — please trigger the $0.002 USDC self-test on Base so I can confirm the full payment handshake goes through."}],"resultDescription":"A simple JSON object confirming the handler executed, plus a PAYMENT-RESPONSE HTTP header that together serve as evidence of a completed x402 v2 USDC payment settlement on Base. No data lookup, refund, or downstream action is triggered.","failureModes":["Insufficient USDC balance — payment rejected before handler is reached","Ambiguous charge (e.g. network timeout mid-flight) — do not retry blindly as funds may have already settled","Invalid x402 payment header format — 402 Payment Required response returned","Base network congestion causing delayed or failed on-chain settlement","Malformed request body — 400 Bad Request if required fields are missing"],"whenToPreferThis":"Use this endpoint when you need to verify that an x402 v2 payment flow is working end-to-end with a real USDC transaction on Base, especially during agent integration setup or debugging. It is the lowest-cost way to confirm x402 settlement without performing any real data operation. Do not use it for actual data retrieval, email validation, DNS lookup, or any other functional task.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T00:30:18.592Z","isFirstParty":false,"canonicalSlug":"old-colony-web-x402-self-test-payment-5e0c6c9b"}