What happens at the cap?
The mint endpoint returns 402 with error_code=quota_exceeded. Existing UCANs keep working until they expire; new ones wait until reset or upgrade.
Can I see usage live?
Yes. /app/billing surfaces the current period's count, a horizontal meter, and the days-to-reset. A banner appears at 80% and again when exhausted.
Is this metered through Stripe?
Stripe handles the recurring Pro charge today. Per-request meter sync to Stripe Meter API is on the post-wedge roadmap; the column is there, the worker is not yet shipped.
What's NOT counted?
Dashboard reads, OAuth flows, passkey enrollment, and webhook events do not consume credits. Only mint + proxy.