{"uid":"cap_ZZgs2vphREndOL8TAZsJi","slug":"tripguard-fare-intelligence-echo-5760c003","name":"TripGuard Fare Intelligence Echo","description":"Real-time airfare intelligence for AI travel-booking agents: flight price-drop prediction, fare-fraud and deal-legitimacy verification, and verified booking links for any route and date. Pay-per-call in USDC on Base. No API key.","url":"https://tripguard-fare-intel.onrender.com/echo?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"message":{"type":"string","maxLength":4096,"minLength":1,"description":"Text to echo back."}}},"responseSchema":{"type":"json","example":{"echo":"hello world","sha256":"b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9","timestamp":"2026-08-18T12:00:00.000Z"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.12","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":"$0.12/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.12","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.12","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Czi-iUGu9UaaIeGJiFveL","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.12","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Echoes back a submitted text message with a SHA-256 hash and timestamp — the actual transport/test endpoint underlying the TripGuard fare intelligence service.","exampleAgentPrompt":"Send the message 'hello world' to the TripGuard echo endpoint and show me the SHA-256 hash and timestamp you get back.","exampleUseCases":[{"title":"API connectivity smoke test","prompt":"Can you ping the TripGuard fare intelligence endpoint with the message 'connectivity check' and confirm it's responding correctly with a valid hash?"},{"title":"Message integrity verification","prompt":"Send the text 'NYC to LAX 2026-09-15 economy' to TripGuard's echo endpoint so I can verify the SHA-256 checksum matches what I computed locally."},{"title":"Timestamped message receipt","prompt":"Submit the string 'booking-agent-run-001' to the TripGuard echo service and give me the timestamp and hash it returns so I can log proof of the call."}],"resultDescription":"A JSON object containing three fields: 'echo' (the original input message reflected back), 'sha256' (a SHA-256 hash of the echoed message), and 'timestamp' (an ISO 8601 UTC datetime of when the call was processed).","failureModes":["Empty or missing 'message' field returns a validation error — message must be between 1 and 4096 characters","Message exceeding 4096 characters is rejected","Payment not received or insufficient USDC causes a 402 Payment Required response","Service unavailable on Render cold start may cause timeout or 503 error"],"whenToPreferThis":"Use this endpoint when you need to verify connectivity and response format of the TripGuard service, validate that a text string hashes to an expected SHA-256 value, or obtain a server-side timestamp receipt for a submitted message. Do not use this endpoint if you actually need flight price predictions, fare fraud detection, or booking links — this is an echo/test endpoint, not the intelligence layer.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T18:38:19.608Z","isFirstParty":false,"canonicalSlug":"tripguard-fare-intelligence-echo-5760c003"}