Status Codes

• 200 OK — Request successful
• 201 Created — New object created
• 202 Accepted — Request accepted, processing ongoing
• 204 No Content — Request successful, no body returned
• 400 Bad Request — Invalid input
• 401 Unauthorized — Missing or invalid authentication
• 404 Not Found — Resource does not exist
• 405 Method Not Allowed — Unsupported HTTP method
• 409 Conflict — Conflict (e.g., invalid state transition)
• 422 Unprocessable Content — Validation errors
• 500 Internal Server Error — Unexpected server error

All error responses return a JSON object with a message field. See Error Responses for details.