Environment Variables Configure runtime environment for your apps. Set Variables POST /api/v1/apps/{id}/env { "DATABASE_URL": "postgres://...", "REDIS_URL": "redis://...", "NODE_ENV": "production" } Bulk Set PUT /api/v1/apps/{id}/env/bulk { "variables": { "KEY1": "value1", "KEY2": "value2" } } Changes trigger automatic redeployment.