{"service":"Huit.AI Billing API","version":"1.0.0","status":"operational","endpoints":["GET  /api/health","GET  /api/prices","GET  /api/prices/{vertical}","POST /api/checkout","POST /api/portal","GET  /api/subscription/{customer_id}","GET  /api/subscription/by-email/{email}","GET  /api/usage/{subscription_id}","POST /api/usage/increment","POST /api/stripe/setup","POST /api/stripe/webhook"]}