Polar
Configure Polar as a payment provider for subscriptions and one-time purchases.
API keys
Add Polar API credentials to .env.local and select payments.provider: "polar" in simulacrum.config.ts when your generated stack includes the adapter.
Products
Mirror product and price identifiers from the Polar dashboard in your config module.
Webhooks
Point Polar webhooks at your app’s signed handler and reconcile subscription state the same way as other providers.
Test checkout in Polar’s sandbox before switching production traffic.