{"uid":"cap_K1RideJGflHiACTEb8WMf","slug":"bitbooth-echo-endpoint-x402-626e0bfa","name":"BitBooth Echo Endpoint (x402)","description":"BitBooth echo endpoint — pays a tiny USDC fee, returns a JSON echo. Reference implementation of the x402 + CDP Facilitator + Bazaar discovery loop.","url":"https://app.heinrichstech.com/v1/cdp/echo?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"message":{"type":"string","maxLength":500,"description":"Optional string to echo back in the response. Max 500 chars."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":1,"rating":{"score":"1.00","successRate":"0.50","reviews":1,"stars":"5.0","state":"rated"},"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_eWsUvs3-gritkE1jMk5DV","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":"Accepts an optional message string, charges $0.001 USDC via x402 micropayment, and returns a JSON echo of the input — a reference implementation of the x402 payment + CDP Facilitator + Bazaar discovery loop.","exampleAgentPrompt":"Send a test message through the BitBooth x402 echo endpoint — use the message 'hello from my agent' — so I can confirm my micropayment flow is working end to end.","exampleUseCases":null,"resultDescription":"A JSON object echoing back the submitted message string, confirming both the x402 USDC micropayment of $0.001 was processed and the request completed successfully through the CDP Facilitator and Bazaar discovery loop.","failureModes":["Insufficient USDC balance — payment fails, 402 Payment Required returned","Message exceeds 500 character limit — 400 Bad Request","x402 payment header malformed or missing — 402 or 400 error","CDP Facilitator unavailable — service timeout or 503","Network error during payment settlement — transaction may not confirm"],"whenToPreferThis":"Use this endpoint when you need to test or demonstrate an end-to-end x402 micropayment flow, validate that your CDP Facilitator integration and Bazaar discovery setup work correctly, or when you need a minimal, low-cost (< $0.01) reference call that confirms your agent can autonomously authorize and execute a pay-per-call API transaction.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":2,"lastUsedAt":"2026-07-01T11:07:06.072Z","lastSuccessfullyRanAt":"2026-07-01T11:07:06.072Z","lastHealthCheckAt":"2026-10-12T21:38:57.467Z","isFirstParty":false,"canonicalSlug":"bitbooth-echo-endpoint-x402-626e0bfa"}