commet

Use when billing for AI model token usage — setting up @commet/ai-sdk tracked() middleware, configuring balance consumption model plans with AI model pricing, tracking input/output/cache tokens, cost calculation with margins, or building AI products that need usage-based billing.

Commet behavior rules and business logic. Use when implementing billing features, subscription changes, plan changes, proration, pricing, credits, balance, intro offers, or any billing edge case. Contains detailed rules for how changes affect customers.

Use when working with the Commet CLI -- logging in, linking projects, pulling types for autocomplete, scaffolding new projects from templates (fixed, seats, metered, credits, balance-ai, balance-fixed), or managing organizations.

Use when setting up Commet webhook endpoints, verifying signatures, handling billing events (subscription.created, subscription.activated, subscription.canceled, subscription.updated, payment.received, payment.failed, invoice.created), or building event-driven billing workflows.

Integrate Commet billing and payments into any application. Use when working with @commet/node, @commet/next, @commet/better-auth, the Commet CLI, or building billing features like subscriptions, usage tracking, seat management, checkout, customer portal, webhooks, feature gating, or payment flows. Triggers on imports from "@commet/node", "@commet/next", "@commet/better-auth", commet SDK usage, billing integration tasks, or mentions of Commet.