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x402-tools List Check
x402
x402-tools List Check is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-10).
Probes a public origin URL to diagnose its x402 payment-gating configuration and returns diagnostic details including EIP-3009 payment extras.
Price / call$0.02
Success—
StatusUnknown
How this service works
Paid x402 diagnostics. Unpaid paid-SKU requests return HTTP 402 with eip3009 extras. Facilitator: OpenX402 only.
Output
A JSON diagnostic report describing the x402 payment-gate status of the probed origin URL, including HTTP 402 response details, EIP-3009 payment extras, required payment SKUs, and facilitator information (OpenX402).
Example use cases
Verify x402 integration before launch
“I just added x402 payment gating to my API at https://myapi.example.com — can you probe it with the x402 listcheck tool to confirm it's returning a proper 402 with EIP-3009 extras?”
Debug a broken x402 payment gate
“My users are complaining that https://content.mysite.io isn't returning proper payment info — can you run an x402 diagnostic on that origin to see what's wrong with the 402 response?”
Audit competitor's x402 payment setup
“Can you check what x402 payment configuration https://api.thirdparty.com is using — specifically what EIP-3009 extras they return when you hit a paid SKU without payment?”
Technical details
Endpoint
GEThttps://openclawproductions.com/api/v1/listcheck?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to programmatically diagnose or verify that a remote origin URL is correctly configured for x402 payment gating, especially when you need to inspect EIP-3009 payment extras. Prefer this over manual curl inspection when you need structured JSON output about the payment requirements of an endpoint.
Side effects
- Origin URL is not reachable — connection timeout or DNS failure
- Origin does not implement x402 — no 402 response returned, empty or unexpected diagnostic
- Malformed origin parameter — missing or invalid URL format
- Payment not provided — this endpoint itself costs $0.02 USDC per call via x402; unpaid requests return HTTP 402
- Origin URL returns 402 but lacks valid EIP-3009 extras — partial diagnostic returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object | |
| inputSchema | object |
Output
Schema · Response
{
"type": "json",
"example": {
"sku": "listcheck",
"note": "Example paid JSON shape. Not a live settle.",
"price": "$0.02",
"title": "List Check"
}
}Tags
x402
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