api.21.cash

tool · developer-tools · 68/100 · checked 2026-09-27

A platform for wrapping APIs and URLs in paywalls to facilitate per-call payments for AI agents using USDC on the Base network.

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What we found

1 of these are critical or high. This page lists what a crawler runs into. The paid report adds the evidence for each one and how to fix it.

Verify this

The badge below is generated from the same record and updates when the site is re-checked. Anyone can read the record without paying: https://402registry.com/api/check?url=https://api.21.cash/

402registry badge for api.21.cash

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