{"uid":"cap_2O8o_FIs6sauKjEynPdMI","slug":"x402-market-api-cdp-mode-echo-fresh-v2-spec-b913a8ee","name":"x402-market-api CDP-Mode Echo (Fresh/v2-spec)","description":"Third cdp-mode echo listing, created after the v2-spec PaymentPayload.extensions fix. Used to test whether a brand-new resource indexed only with the corrected wire format gets picked up by Bazaar discovery.","url":"https://x402-market-api.lien-studio-akiyama.workers.dev/api/seller-4068b8fc/test-echo-cdp-fresh","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":{"type":"string","const":"http"},"method":{"enum":["POST","PUT","PATCH"],"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":"0.010000","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.010000/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_Y1khKHu8X30iZYNMXq5ma","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":"Echoes back an HTTP POST request body through a CDP-mode x402 payment-gated endpoint, used to validate the corrected v2-spec PaymentPayload.extensions wire format in Bazaar discovery.","exampleAgentPrompt":"Send a test POST with a JSON body like {\"hello\": \"world\"} to the fresh CDP-mode echo endpoint and show me what gets echoed back — I want to confirm the x402 v2-spec payment flow and Bazaar indexer pickup are working correctly.","exampleUseCases":null,"resultDescription":"The endpoint echoes back the submitted HTTP request body along with an output type descriptor. The response confirms whether the x402 v2-spec PaymentPayload.extensions wire format was accepted and processed correctly through the CDP facilitator.","failureModes":["Payment not provided or invalid x402 PaymentPayload — returns 402 Payment Required","Malformed input: missing required fields (type, method, bodyType, body) — returns 400 Bad Request","Unsupported HTTP method (must be POST/PUT/PATCH) — returns 422 Unprocessable Entity","CDP facilitator settlement failure — payment rejected, no echo returned","Incorrect wire format for PaymentPayload.extensions — payment rejected pre-v2-spec fix"],"whenToPreferThis":"Use this endpoint when you need to test the x402 v2-spec PaymentPayload.extensions wire format specifically with a freshly indexed Bazaar resource in CDP mode. Prefer this over the other CDP echo siblings (test-echo-cdp, test-echo-cdp-2) when you want to verify that brand-new resources indexed only with the corrected wire format are picked up by Bazaar discovery. At $0.01 USDC it is the cheapest CDP-mode echo option available on this host.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:36:05.532Z","isFirstParty":false}