Keep cmux checkout and paid plans working.
Guides changes and troubleshooting for cmux billing, checkout, subscriptions, and paid-plan entitlements.
When to use it
Read before changing billing, pricing, Stripe, Pro entitlement, checkout, webhook, or subscription code.
It changes how the agent edits and debugs cmux billing code by supplying architecture guidance, development procedures, and production runbooks.
What you provide
The local development workflow runs the application with bun dev.
The development workflow uses per-branch Docker Postgres containers and requires selecting a database port that avoids collisions.
This skill
signed-in dev account
Removes dev account Pro access (irreversible)
Stripe
Provisions and tests live billing