Tier-Based Entitlements

Gate features and track usage by subscription tier.

When to Use This Skill

• Free users get limited features
• Pro users get unlimited access
• Need to track daily/monthly usage
• Want clean API for checking limits

Core Concepts

1. Tier config - Single source of truth for all limits
2. Usage tracking - Database tracks consumption
3. Atomic increments - Prevent race conditions
4. Rate limit headers - Standard HTTP headers for clients

TypeScript Implementation