{"uid":"cap_1zAMhIjq7pMRUQBNfzRMh","slug":"zenvault-x-echo-364075a4","name":"ZenVault X.echo","description":"ZenVault X.echo","url":"https://api.zenvault.eu/v1/x402/echo?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_JxbWbY2M1KUwZGL3gc8Ph","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Echoes a submitted payload back as a created resource with a one-time management token, serving as a test or validation endpoint for the x402 micropayment protocol.","exampleAgentPrompt":"Send a test echo request to ZenVault's x402 endpoint with my payload and get back the echoed resource and management token so I can verify my micropayment integration is working.","exampleUseCases":[{"title":"Validate x402 payment integration","prompt":"Can you hit the ZenVault X.echo endpoint with a simple test payload to confirm my x402 USDC payment header is being accepted and I get back a valid resource plus management token?"},{"title":"Round-trip payload integrity check","prompt":"Send this JSON body to the ZenVault echo endpoint and tell me if the response contains the same data back along with a one-time management token — I want to confirm nothing is getting mangled in transit."},{"title":"Smoke-test a new x402 API key","prompt":"Run a quick smoke test against ZenVault's X.echo endpoint using my new x402 credentials so I can confirm the $0.005 USDC charge goes through and the echo response comes back correctly."}],"resultDescription":"A JSON object containing the created (echoed) resource — mirroring the submitted payload — plus a one-time management token that can be used for subsequent resource management operations.","failureModes":["Payment not included or malformed x402 header — results in 402 Payment Required","Invalid or malformed request body — may return 400 Bad Request","Management token is one-time use; reusing it will fail","Service unavailability at api.zenvault.eu returns 5xx errors","Insufficient USDC balance causes payment failure and request rejection"],"whenToPreferThis":"Choose this endpoint when you need to test or validate an x402 micropayment integration specifically on the ZenVault platform, confirm round-trip payload integrity, or obtain a one-time management token as part of a paid API workflow. It is best suited for developer testing, integration smoke-testing, and verifying that x402 payment headers are correctly formed and accepted.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T03:21:13.710Z","isFirstParty":false,"canonicalSlug":"zenvault-x-echo-364075a4"}