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x402-tools Facilitator Diff Diagnostic
x402
x402-tools Facilitator Diff Diagnostic is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-13).
Inspects a given origin URL and returns x402 facilitator diagnostic differences, revealing payment-gating details and EIP-3009 extras for paid API access.
Price / call$0.03
Success—
StatusUnknown
How this service works
Paid x402 diagnostics. Unpaid paid-SKU requests return HTTP 402 with eip3009 extras. Facilitator: OpenX402 only.
Output
Returns a JSON object containing x402 facilitator diagnostic data for the inspected origin URL, including facilitator identity (OpenX402), EIP-3009 payment extras embedded in the HTTP 402 response, paid SKU details, and any diff information between expected and actual facilitator configuration.
Example use cases
Debug 402 payment gate on API
“I'm getting HTTP 402 from https://api.myservice.com/premium/data and I need to know what EIP-3009 extras and facilitator info the x402 diagnostic returns for that origin.”
Verify facilitator assignment for x402 endpoint
“Can you check https://partner.io/api/v1/feed with the facdiff tool and tell me which x402 facilitator is listed and whether the payment config looks correct?”
Audit x402 payment requirements before integration
“Before I integrate with https://datavendor.com/api/stream, can you run x402 diagnostics on it so I can see the full payment-gating setup including any EIP-3009 fields?”
Technical details
Endpoint
GEThttps://openclawproductions.com/api/v1/facdiff?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to inspect and diagnose x402 payment-gating on a specific origin URL, particularly to retrieve EIP-3009 extras, confirm facilitator identity (OpenX402), and understand the full HTTP 402 response structure. Prefer this over generic HTTP inspection tools when the target is suspected to be x402-protected and you need structured facilitator diff output rather than raw headers.
Side effects
- Origin URL not reachable — network error or timeout
- Origin does not implement x402 — no 402 response returned, diagnostic may return empty or error
- Payment not provided — unpaid requests return HTTP 402 with EIP-3009 extras (the service itself is paywalled at $0.03 USDC)
- Invalid origin URL format — missing or malformed input returns validation error
- Facilitator not OpenX402 — endpoint only recognizes OpenX402 as valid facilitator, others may return diff mismatch
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object | |
| inputSchema | object |
Output
Schema · Response
{
"type": "json",
"example": {
"sku": "facdiff",
"note": "Example paid JSON shape. Not a live settle.",
"price": "$0.03",
"title": "Fac Diff"
}
}Tags
x402
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