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SiteScout x402 Endpoint Inspector
x402
SiteScout x402 Endpoint Inspector is a paid API for AI agents from sitescout-production-de0b.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-01).
Inspects a given URL to determine whether it is an x402 payment-gated endpoint, checking reachability and returning x402 status details
Price / call$0.005
Success—
StatusUnknown
How this service works
Agent-oriented website and x402 endpoint inspection micro-APIs.
Output
Returns a JSON object indicating whether the target URL is an x402-gated endpoint (x402: true/false), the HTTP status code received (e.g. 402), and whether the URL is reachable (reachable: true/false).
Example use cases
Discovering x402-gated APIs before calling them
“Before I try to call https://api.someservice.com/data, can you check if it's protected by x402 payment gating and whether it's actually reachable?”
Auditing a list of endpoints for x402 support
“I have this endpoint https://partner.example.com/premium-feed — can you inspect it to confirm it uses x402 and see what status it returns?”
Debugging a 402 response in an agent workflow
“My agent is hitting https://datamarket.io/api/prices with a POST and getting an unexpected response — can you probe it to tell me if it's genuinely x402-gated or just unreachable?”
Technical details
Endpoint
POSThttps://sitescout-production-de0b.up.railway.app/api/x402-inspect?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically determine whether a given URL is protected by the x402 payment protocol before attempting to call it, or when auditing/discovering x402-compatible APIs. Prefer this over manual HTTP inspection when building agent workflows that must route around payment-gated vs. free endpoints.
Side effects
- URL is unreachable or DNS fails — reachable: false returned
- URL does not return a 402 status — x402: false with actual status code
- Malformed URL input — likely 4xx error from the API
- Target endpoint times out — may return reachable: false or error
- Non-HTTP URLs or unsupported schemes may cause errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | |
| body | object | |
| method | string |
Output
Schema · Response
{
"type": "json",
"example": {
"x402": true,
"status": 402,
"reachable": true
}
}Tags
x402
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