Polar

Use this skill when work touches Polar.sh billing: checkout, customers, subscriptions, benefits and entitlements, usage-based billing, webhooks, the Better Auth plugin, or a move from Stripe, Lemon Squeezy, or the old SDK.

Snapshot: @polar-sh/sdk@1.0.2 (2026-10-02), API version 2026-10 (Current). Refresh from source-map.md if the installed package or API version differs.

Workflow