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TripGuard Fare Intelligence Echo
x402
TripGuard Fare Intelligence Echo is a paid API for AI agents from tripguard-fare-intel.onrender.com, paid per call via x402, $0.12/call, status unknown (last checked 2026-10-11).
Echoes back a submitted text message with a SHA-256 hash and timestamp — the actual transport/test endpoint underlying the TripGuard fare intelligence service.
Price / call$0.12
Success—
StatusUnknown
How this service works
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.
Output
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).
Example use cases
API connectivity smoke test
“Can you ping the TripGuard fare intelligence endpoint with the message 'connectivity check' and confirm it's responding correctly with a valid hash?”
Message integrity verification
“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.”
Timestamped message receipt
“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.”
Technical details
Endpoint
POSThttps://tripguard-fare-intel.onrender.com/echo?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| message | string | Text to echo back. |
Output
Schema · Response
{
"type": "json",
"example": {
"echo": "hello world",
"sha256": "b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9",
"timestamp": "2026-08-18T12:00:00.000Z"
}
}Tags
x402
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