Submit

Get on the x402 adoption tracker

Listing is free and nobody buys it. Every submission is checked at source before it goes up, and the entry records what was checked and what was not. Send the evidence below and the check is quick.

If you sell over x402

Send these. The first two are enough to be listed as live; the rest decide what the entry can say about volume.

  1. An endpoint that answers 402. The URL, the HTTP method, and an example body if it is a POST. I call it without paying and read the challenge.
  2. Public documentation that states the prices and the unit (per call, per request, per row).
  3. The payTo wallet and the networks you accept. If you publish a manifest at /.well-known/x402, the URL.
  4. Ownership proof. A signed message in the manifest, or a message you are willing to sign with the payTo key so I can recover the signer.
  5. Anything that shows volume. A settlement feed, a public stats page, or a figure you will put on the record. If settlement runs through a prepaid deposit and leaves no per-call trace, say so; the entry will read "volume not observable" rather than guessing.
  6. Since when it has been live, and a contact name.

If you ship x402 support for others

Send the public documentation or announcement, the date it shipped, and whether it is generally available or in preview. Platform entries are listed on the named source and say that traffic through them was not verified. An announcement with nothing shipped is listed as announced, not live.

What happens next

I run the checks described on the method page, write the entry with a status, a volume word and a verification block, and log the addition on the change page with the date. Sellers with a probe endpoint are then re-checked daily, and the tracker shows the last date the endpoint answered. If something does not check out, I write back and say what, rather than listing it anyway.

Listed entries can show a dated badge that reads from the tracker.

Email a submission (template opens in your mail client)

Or write to hello@majormatters.co with the items above. No attachments needed; links to public pages are better than screenshots.

Back to the tracker

Charlie Major is a Product Development Manager at Mastercard. The views and opinions expressed in Major Matters are his own and do not represent those of Mastercard.