x402 Conformance Check

Is your x402 setup conformant?

Enter any domain. IronBridge fetches its public /.well-known/x402 and grades it against the x402 v2 discovery spec — the standard file AI buyer agents read to learn what you charge and where to pay you. Free — no API key, no signup.

Read the spec → · Payable domains → · Build my file →

Domain

Build my file

Answer two questions and this writes your /.well-known/x402 for you. Host it, re-run the check above, and a grade of B or better lists you in the payable-domains index automatically. Free, no signup.

Do you already have a paid endpoint — a URL that replies HTTP 402 (payment required) until it is paid?

Yes — I run my own endpoint (it returns a 402 challenge when called unpaid) No server yet — use IronBridge's hosted route (GitLawb). Buyers pay your wallet directly — you keep 95.5% (4.5% fee; price fixed at 0.10 USDC today). No code, no signup — payable in minutes. Grades B — the best grade possible without your own endpoint (an A requires one).

Your paid endpoint URL (https, answers 402 unpaid)

Your receiving wallet (0x… on Base)

Price per call, in USDC

One line: what does the agent get?

What this checks: discovery conformance — reachability, x402 v2 shape, declared resources, and payment terms (receiver, network, asset) in your public /.well-known/x402.
Where the ecosystem is: the discovery file is a new convention — most domains, including many that do take agent payments today, have not published one yet and grade F. An F means not-discoverable, not payment-incapable.
How it stays safe: it reads only that one fixed path over HTTPS, follows no redirects, times out in 8s, and is rate-limited. It does not probe arbitrary URLs, ports, or IPs, and it does not move or verify money — only the discovery file.