$ZAUTH it keeps a live registry of x402 endpoints and tests them, so an agent can check whether a service actually works before paying for it. It also has a free public API, which made it easy for me to try without a wallet.

$ZAUTH

I pulled the first 100 results from the free /api/directory endpoint, once with verified=true and once with verified=false, using a few lines of Node.js.

What stood out: 90 of the 91 "WORKING" verified endpoints were last tested over 30 days ago, even though the docs say verified endpoints are continuously tested. The unverified ones looked the same (100 of 100 stale). Also, only 9 of the 100 verified endpoints had a title, versus 88 of 100 unverified.

Caveat: these are just the first 100 per group, not a random sample, and the 30-day cutoff is my own.

Suggestion: show lastTested next to the status, or mark it stale after a while. Quick question: how often are verified endpoints retested, and is lastTested the latest test?