> ## Documentation Index > Fetch the complete documentation index at: https://api-docs.sevalla.com/llms.txt > Use this file to discover all available pages before exploring further. # Update maintenance mode > Turn maintenance mode on or off for an application and optionally set a custom maintenance page URL. While enabled, every request to every domain of the application gets the maintenance page with status 503 and a Retry-After header instead of reaching the application. There are no path, method or visitor exceptions, and IP restrictions still apply first. The application keeps running and deployments still work. The change is written to the edge synchronously but can take up to 5 minutes to reach every location. Returns the updated state. ## OpenAPI ````yaml https://api.sevalla.com/v3/openapi.json put /applications/{id}/maintenance-mode openapi: 3.1.0 info: title: Sevalla API docs version: 1.0.0 servers: - url: https://api.sevalla.com/v3 security: - bearerAuth: [] paths: /applications/{id}/maintenance-mode: put: tags: - Applications summary: Update maintenance mode description: >- Turn maintenance mode on or off for an application and optionally set a custom maintenance page URL. While enabled, every request to every domain of the application gets the maintenance page with status 503 and a Retry-After header instead of reaching the application. There are no path, method or visitor exceptions, and IP restrictions still apply first. The application keeps running and deployments still work. The change is written to the edge synchronously but can take up to 5 minutes to reach every location. Returns the updated state. operationId: updateApplicationMaintenanceModeV3 parameters: - schema: example: fb5e5168-4281-4bec-94c5-0d1584e9e657 type: string format: uuid pattern: >- ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ in: path name: id required: true description: Application identifier requestBody: required: true content: application/json: schema: type: object properties: is_enabled: type: boolean description: >- Whether maintenance mode should be active. When true, every request to every domain of the application receives the maintenance page with status 503. The application keeps running and can still be deployed while in maintenance mode. example: true page_url: description: >- HTTPS URL of a page to serve as the maintenance page, for example a Sevalla static site. The edge fetches the page body and serves it on every domain of the application with status 503, so visitors never see this URL. When null the default Sevalla maintenance page is served. Content changes on the page take up to 60 seconds to show. Must start with https:// and be at most 2048 characters. This is a full replace: when omitted or null, any previously set page URL is cleared and the default page is served. example: https://status.example.com anyOf: - type: string maxLength: 2048 - type: 'null' required: - is_enabled responses: '200': description: Default Response content: application/json: schema: type: object properties: is_enabled: type: boolean description: >- Whether maintenance mode is currently active. When true, every request to every domain of the application receives the maintenance page with status 503 instead of reaching the application. example: false page_url: anyOf: - type: string - type: 'null' description: >- HTTPS URL of a page to serve as the maintenance page, for example a Sevalla static site. The edge fetches the page body and serves it on every domain of the application with status 503, so visitors never see this URL. When null the default Sevalla maintenance page is served. Content changes on the page take up to 60 seconds to show. example: https://status.example.com required: - is_enabled - page_url additionalProperties: false '400': description: Default Response content: application/json: schema: type: object properties: message: type: string description: Error message example: Bad request status: type: integer minimum: -9007199254740991 maximum: 9007199254740991 description: HTTP status code example: 400 data: type: object properties: code: description: Error tracking code for support reference example: err-abc-123 type: string message: description: Additional error details or instructions example: >- If you need assistance, please contact support and provide this error code. type: string additionalProperties: false required: - message - status additionalProperties: false '401': description: Default Response content: application/json: schema: type: object properties: message: type: string description: Error message example: Unauthorized status: type: integer minimum: -9007199254740991 maximum: 9007199254740991 description: HTTP status code example: 401 data: type: object properties: code: description: Error tracking code for support reference example: err-abc-123 type: string message: description: Additional error details or instructions example: >- If you need assistance, please contact support and provide this error code. type: string additionalProperties: false required: - message - status additionalProperties: false '403': description: Default Response content: application/json: schema: type: object properties: message: type: string description: Error message example: Forbidden status: type: integer minimum: -9007199254740991 maximum: 9007199254740991 description: HTTP status code example: 403 data: type: object properties: code: description: Error tracking code for support reference example: err-abc-123 type: string message: description: Additional error details or instructions example: >- If you need assistance, please contact support and provide this error code. type: string additionalProperties: false required: - message - status additionalProperties: false '404': description: Default Response content: application/json: schema: type: object properties: message: type: string description: Error message example: Not found status: type: integer minimum: -9007199254740991 maximum: 9007199254740991 description: HTTP status code example: 404 data: type: object properties: code: description: Error tracking code for support reference example: err-abc-123 type: string message: description: Additional error details or instructions example: >- If you need assistance, please contact support and provide this error code. type: string additionalProperties: false required: - message - status additionalProperties: false '429': description: Default Response content: application/json: schema: type: object properties: message: type: string description: Error message example: Too many requests status: type: integer minimum: -9007199254740991 maximum: 9007199254740991 description: HTTP status code example: 429 data: type: object properties: code: description: Error tracking code for support reference example: err-abc-123 type: string message: description: Additional error details or instructions example: >- If you need assistance, please contact support and provide this error code. type: string additionalProperties: false required: - message - status additionalProperties: false '500': description: Default Response content: application/json: schema: type: object properties: message: type: string description: Error message example: Internal Server Error status: type: integer minimum: -9007199254740991 maximum: 9007199254740991 description: HTTP status code example: 500 data: type: object properties: code: description: Error tracking code for support reference example: err-abc-123 type: string message: description: Additional error details or instructions example: >- If you need assistance, please contact support and provide this error code. type: string additionalProperties: false required: - message - status additionalProperties: false components: securitySchemes: bearerAuth: type: http scheme: bearer description: >- API key authentication. Pass your API key as a Bearer token in the Authorization header. ````