Repair Subscription Entitlement Drift

The problem

Subscription data often drifts from actual product access due to race conditions, out-of-order webhooks, or stale caches. This leads to paid users being blocked from features or cancelled accounts retaining premium access indefinitely.

What it does

• Detects and repairs commercial state drift between billing providers and local authorization logic.
• Establishes monotonic versioning for subscription events to prevent old webhooks from overwriting new state.
• Generates durable entitlement projections to decouple billing models from feature-gate enforcement.
• Implements bounded cache invalidation and reconciliation jobs to catch missed provider events.
• Adds deterministic lifecycle tests for upgrades, downgrades, trials, and cancellations.

Frameworks & tools

Works with Stripe, Paddle, and other billing providers. Compatible with SQL/NoSQL databases, Redis caching layers, and distributed service architectures requiring consistent authorization.

Why this beats prompting it yourself

Subscription lifecycles are complex edge-case mines. This skill enforces a strict entitlement contract and monotonic event handling that generic prompts miss, ensuring your system handles delayed events and race conditions without manual intervention.

Use cases

• Repairing access for paid users who are incorrectly blocked after an upgrade.
• Automating the revocation of premium features exactly when a grace period expires.
• Synchronizing seat limits and quotas across multiple microservices.
• Auditing and reconciling local database state against the billing provider's source of truth.

Known limitations

Requires an existing project workspace and defined commercial rules. It will not invent pricing, refund policies, or business terms not already present in your code.