autumn

Write integration tests for Autumn billing. Covers initScenario setup, billing/attach/track/check endpoints, subscription updates, assertion utilities, and common billing test patterns. Use when creating tests, writing test scenarios, debugging test failures, or when the user asks about testing.

Build and manage percentage-based rolling rollouts with cache staleness detection. Use when adding new rollout features, debugging rollout bucket routing, working with the rollout edge config, or handling cache staleness during forward/rollback migrations.

Understand and create S3-backed edge configs with poll-based caching. Use when adding new runtime configs (feature rollouts, request blocking, operational toggles), debugging edge config polling, or working with the EdgeConfigStore factory.

Build a billing page and manage subscriptions with Autumn. Use this skill when the user wants to: - Display active plans or subscription status - Show usage balances to customers - Build a pricing page with upgrade/downgrade buttons - Implement plan switching (upgrades/downgrades) - Add cancel/uncancel subscription functionality - Open the Stripe billing portal - Display usage history charts - Add prepaid top-ups or credit purchases

Add usage tracking and feature gating with the Autumn SDK. Use this skill when asked to: - Add usage tracking or metering - Implement feature limits or gating - Check feature access or entitlements - Track API calls, messages, or other usage - Implement credit systems - Add paywalls or upgrade prompts - Enforce usage limits server-side

Helps design pricing models for Autumn using the autumn.config.ts configuration file. Use this skill when: - Designing pricing tiers, plans, or features for Autumn - Creating autumn.config.ts configuration - Setting up usage-based, subscription, or credit-based pricing - Configuring features like API calls, seats, storage, or credits - Understanding Autumn feature types (metered, boolean, credit_system) - Working with plan items, metered billing, or tiered pricing

Sets up Autumn billing integration: installs the SDK, creates a customer, and adds the payment flow. Use this skill when the user wants to: - Set up Autumn billing - Create an Autumn customer - Integrate Autumn into their app - Add billing/entitlements with Autumn - Configure Autumn SDK - Add payment flow or checkout

Understand, debug, and edit Autumn checkout flows. Covers how attach creates an Autumn checkout, how public checkout routes recompute previews, how confirmation executes billing, and when Autumn checkout vs Stripe checkout vs no checkout is chosen.

Reference for Autumn balance mutation logs, lock receipts, ordered deduction provenance, and finalizeLock reconciliation semantics. Use when working on lock receipts, deduction provenance, mutation-log sync, or finalize/release flows.

Debug, edit, and fix billing operations. Covers the V2 action-based architecture (attach, multiAttach, updateSubscription, allocatedInvoice, createWithDefaults, setupPayment). Use when working on billing, subscription, invoicing, or Stripe integration code.

Write integration tests for Autumn billing. Covers initScenario setup, billing/attach/track/check endpoints, subscription updates, assertion utilities, and common billing test patterns. Use when creating tests, writing test scenarios, debugging test failures, or when the user asks about testing.

Create async background tasks (workflows) using SQS or Hatchet. Use when building queue jobs, background processing, or async tasks.

Create and maintain API version changes. Use when adding breaking changes to API responses/requests, creating version change files, transforming data between versions, or handling backward compatibility.

Refine rough engineering thoughts into structured Linear tickets with GitHub permalinks