{"uid":"cap_0eTeE8mcWyy5Ji6xAOJnq","slug":"vextorium-x402-payment-echo-test-29f0708a","name":"Vextorium x402 Payment Echo Test","description":"Test your x402 client or agent for the minimum price: confirms the payment arrived and echoes back the network, scheme, payer and amount the server saw, your IP, user agent, time and any 'eco' text you send.","url":"https://api.vextorium.com/prueba-x402-pago?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"eco":{"type":"string"}}},"responseSchema":{"type":"json","example":{"ok":true,"eco":"hello","nota":"Si ves pago_visto con tu red y pagador, tu integración x402 funciona.","hora_utc":"2026-10-02T20:34:04.478+00:00","ip_cliente":null,"pago_visto":null,"user_agent":null}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/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_gfQOTtQ_BXEhVg5aWl5mV","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 a minimal x402 micropayment and echoes back the payment details the server observed — network, scheme, payer, amount, client IP, user agent, timestamp, and optional echo text — to confirm your x402 integration is working.","exampleAgentPrompt":"Run a quick x402 payment test against the Vextorium echo endpoint and send the text 'hello world' as the eco field — I want to see the network, payer address, and amount the server actually recorded.","exampleUseCases":[{"title":"First-time x402 integration smoke test","prompt":"I just wired up x402 payments in my agent. Can you hit the Vextorium payment echo endpoint with eco text 'integration-check' and show me whether the server saw the right payer address and network?"},{"title":"Debugging x402 payer identity mismatch","prompt":"My x402 client is sending payments but I'm not sure it's using the correct wallet address. Test it against the Vextorium echo endpoint and tell me exactly what payer and network the server reports back."},{"title":"CI health check for x402 agent payment flow","prompt":"Run the Vextorium x402 echo test with eco set to 'ci-ping' so I can confirm our payment pipeline is still functioning end-to-end before deploying."}],"resultDescription":"A JSON object with: ok (boolean success), eco (your echoed text), nota (a human-readable note confirming whether the payment was seen), hora_utc (server timestamp), ip_cliente (your public IP), pago_visto (the payment details the server observed — network, scheme, payer, amount), and user_agent (your client's user agent string).","failureModes":["Payment header missing or malformed — server returns 402 Payment Required with x402 challenge","Incorrect USDC amount sent — payment rejected before echo response is generated","Network mismatch between expected chain and payment — pago_visto may show unexpected values","Body not valid JSON — request fails with 400 or parsing error","Service temporarily unavailable — 5xx response with no echo body"],"whenToPreferThis":"Choose this endpoint when you need the absolute cheapest ($0.001 USDC) and simplest way to confirm that your x402 client or AI agent can successfully attach a valid payment header, get it accepted by a real server, and read back the payment metadata the server observed. Ideal for integration smoke tests, CI pipelines, and debugging payer/network identity issues before calling more expensive x402-gated endpoints.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T18:51:48.753Z","isFirstParty":false,"canonicalSlug":"vextorium-x402-payment-echo-test-29f0708a"}