Polar API & Billing Integration
Guides modern Polar SDK and API integrations across checkouts, subscriptions, customer portals, meters, and webhooks.
Polar Knowledge Patch equips Claude Code with up-to-date knowledge and implementation patterns for the Polar monetization platform, bridging the gap between training cutoffs and the latest Polar SDK and Core API updates. It covers breaking changes in catalog structures and checkout parameters, prerelease TypeScript and Python 2026-04 SDKs, Customer Portal sessions, multi-currency pricing, seat management, proration workflows, and meter events. This skill is essential for developers integrating software billing, subscription tiers, seat licensing, or usage metering without running into deprecated API calls or outdated integration patterns.