Free tool
Is your x402 endpoint ready for agents?
Paste a URL. We request it without paying and check its 402 against the x402 spec. Any provider or facilitator, no account, nothing is paid.
Try it on our demo API.
Payment options
| Network | Price | Pays to |
|---|
What it checks. The status code (402, no redirect), the
PAYMENT-REQUIRED header, the x402 version, every payment option (scheme, CAIP-2 network, amount, wallet address, token, the fields clients need to sign), the resource URL, discovery metadata and whether browsers may read the headers. It never pays: to test a real payment and your server's paid answer, use Test as an agent in the dashboard.
New to x402? Read what HTTP 402 Payment Required is, how to charge per API call or how to choose a facilitator.
For CI: curl "https://api.pennipay.eu/v1/tools/x402-check?url=https://…" returns the same report as JSON. Up to 30 checks an hour per IP.