{"message":"Ainstein Apps Subscription API","version":"1.0.0","endpoints":{"GET \/health":"API health check","GET \/api\/{app-id}\/user-status":"Get user subscription status for specific app","POST \/api\/{app-id}\/usage":"Increment usage counter for specific app","POST \/api\/{app-id}\/admin\/update-tier":"Update subscription tier for specific app (for testing)"},"available_apps":["spidrseo","aitranslatr","brandalchemist"]}