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Agentics x402 Preflight Vetting Service
x402
Agentics x402 Preflight Vetting Service is a paid API for AI agents from x402rail.net, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Vets an x402-enabled API endpoint for reachability, self-description, health, and reputation before an AI agent commits payment
Price / call$0.01
Success—
StatusUnknown
How this service works
Correctness-critical services for autonomous AI agents
Output
Returns a structured assessment including: the service's health check URL and latency, whether it's reachable, whether it self-describes via /.well-known/x402, the manifest details (payment address, supported networks, scheme), a reputation score out of 100 with sample size, and a checkedAt timestamp — everything needed to decide whether to trust and pay the endpoint.
Example use cases
Example prompt
“Before my agent pays to call https://api.someservice.com/v1/data, can you run a preflight check on it — I want to know if it's reachable, properly self-describes its x402 manifest, and what its reputation score looks like?”
Technical details
Endpoint
GEThttps://x402rail.net/v1/preflightWhen to prefer
Use this endpoint when your AI agent is about to make a paid x402 API call and needs to verify the target service is legitimate, healthy, and reputable before committing USDC. It is the canonical pre-payment trust check for the x402 ecosystem — prefer it over blind calling whenever financial risk or correctness is at stake.
Side effects
- Private or loopback URL provided — rejected with error before probing
- Target service is unreachable — health.ok=false, reachable=false in assessment
- Service does not expose /.well-known/x402 — selfDescribes=false in assessment
- Malformed or non-URI input URL — schema validation error
- Target service returns non-200 health status — httpStatus reflects actual code
- No reputation data available — score or sampleSize may be null or zero
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://api.example.com/v1/quote",
"health": {
"ok": true,
"url": "https://api.example.com/v1/health/simple",
"latencyMs": 142,
"httpStatus": 200
},
"origin": "https://api.example.com",
"manifest": {
"payTo": "0xabc…",
"scheme": "exact",
"networks": [
"base"
],
"provider": "Example",
"paymentEnv": "mainnet",
"receiveOnly": true,
"advertisedSchemes": [
"exact"
]
},
"checkedAt": "2026-06-18T12:00:00.000Z",
"serviceId": "api-example-com",
"assessment": {
"notes": [],
"reachable": true,
"selfDescribes": true,
"hasReliabilityScore": true
},
"reputation": {
"score": 88.5,
"serviceId": "api-example-com",
"sampleSize": 60
}
}
}Tags
x402
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