> ## Documentation Index > Fetch the complete documentation index at: https://docs.base44.com/llms.txt > Use this file to discover all available pages before exploring further. # Change app slug > This API is in beta. Endpoints, fields, and behavior may still change, so avoid depending on it in production. Changes the app's slug, which sets its `.base44.app` address. Send `null` to reset the slug to the one Base44 generates from the app's name and ID. Sending the current slug, in any capitalization, changes nothing. The old address stops working as soon as the slug changes, and nothing redirects it to the new one. Change the slug before you share the app's URL or point ads at it. An app listed on Launchpad can't change its slug while a voting round is live, because the slug is also the listing's public URL. Changing the slug is limited to 30 requests an hour per caller. Some workspaces have a different limit. This endpoint accepts a personal API key. Workspace API keys are not authorized for it. ## OpenAPI ````yaml /developers/references/app-management/app-management-openapi.json patch /api/apps/{app_id}/metadata/slug openapi: 3.1.0 info: title: Base44 App Management API version: 1.0.0 servers: - url: https://app.base44.com security: - PersonalAccessTokenAuth: [] paths: /api/apps/{app_id}/metadata/slug: patch: summary: Change app slug description: >- This API is in beta. Endpoints, fields, and behavior may still change, so avoid depending on it in production. Changes the app's slug, which sets its `.base44.app` address. Send `null` to reset the slug to the one Base44 generates from the app's name and ID. Sending the current slug, in any capitalization, changes nothing. The old address stops working as soon as the slug changes, and nothing redirects it to the new one. Change the slug before you share the app's URL or point ads at it. An app listed on Launchpad can't change its slug while a voting round is live, because the slug is also the listing's public URL. Changing the slug is limited to 30 requests an hour per caller. Some workspaces have a different limit. This endpoint accepts a personal API key. Workspace API keys are not authorized for it. operationId: update_slug_api_apps__app_id__metadata_slug_patch parameters: - name: app_id in: path required: true schema: type: string description: ID of the app. title: App Id description: ID of the app. example: 6820f3a4e7b91d003c45a1f2 requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/UpdateSlugPayload' responses: '200': description: The app, with its new slug. content: application/json: schema: $ref: '#/components/schemas/UserApp' '400': description: The slug is malformed, reserved, or already used by another app. content: application/json: schema: $ref: '#/components/schemas/SlugRejected' '401': description: Missing or invalid credentials. '403': description: >- You don't have edit access to this app, or you used a workspace API key. This endpoint takes a personal API key. '404': description: App not found. '409': description: The app is listed on Launchpad and a voting round is live. '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' '429': description: Rate limit reached. Retry later. security: - PersonalAccessTokenAuth: - full_access components: schemas: UpdateSlugPayload: properties: slug: anyOf: - type: string - type: 'null' title: Slug description: >- New slug, 3 to 50 characters of letters, numbers, and hyphens that starts and ends with a letter or number, without hyphens as both its 3rd and 4th characters. It has to be unused by any other app and not a reserved name, and it's lowercased before it's saved. Send `null` to reset it to the slug Base44 generates from the app's name and ID. example: nordwind-furniture type: object required: - slug title: UpdateSlugPayload UserApp: properties: id: type: string title: Id description: ID of the app. example: 6820f3a4e7b91d003c45a1f2 created_date: type: string format: date-time title: Created Date description: Time the app was created, as a UTC timestamp in ISO 8601 format. example: '2026-08-01T09:15:00' updated_date: type: string format: date-time title: Updated Date description: >- Time the app document was last written, as a UTC timestamp in ISO 8601 format. example: '2026-08-02T14:30:00' created_by: anyOf: - type: string - type: 'null' title: Created By description: Email of the user who created the app. example: developer@example.com organization_id: anyOf: - type: string - type: 'null' title: Organization Id description: ID of the workspace the app belongs to. example: 67e0b12c4d8a3f005b21c9e4 app_type: type: string title: App Type description: >- Kind of app, set when it's created. One of `user_app` (a web app), `user_agent` (an AI agent), `mobile_app` (a native mobile app), `user_game` (a game), `slide` (a presentation), or `imported_app` (an app imported from an existing code repository). List apps returns it as stored, so an older agent app can report `agent` instead of `user_agent`, and some older apps don't include it. Get app always returns one of the values above. default: user_app example: user_app name: type: string title: Name description: Display name of the app. default: untitled example: My CRM user_description: anyOf: - type: string - type: 'null' title: User Description description: >- Description of the app, or `null` if none was set. An app created without a `name` gets a generated description once a build turn changes it. example: A CRM to track leads and deals logo_url: anyOf: - type: string - type: 'null' title: Logo Url description: >- URL of the app's logo, or `null` if it has none. Set it with [Set app logo](/api-reference/set-app-logo) or [Generate app logo](/api-reference/generate-app-logo). example: >- https://storage.base44.com/6820f3a4e7b91d003c45a1f2/3f2504e0_logo.png social_image_url: anyOf: - type: string - type: 'null' title: Social Image Url description: >- URL of the image shown when the app is shared on social platforms, or `null` if none was set, in which case the logo is shown instead. Set it with [Set social image](/api-reference/set-social-image). example: >- https://storage.base44.com/6820f3a4e7b91d003c45a1f2/7c9e6679_social.png public_settings: type: string enum: - private_with_login - public_with_login - public_without_login - workspace_with_login title: Public Settings description: >- Who can open the published app. Each value is described under [Update app](/api-reference/update-app), which also changes it. default: public_with_login example: public_with_login auth_config: $ref: '#/components/schemas/AuthConfiguration' description: >- Which login methods the app's login page offers. If the workspace enforces SSO for apps, the login page offers only SSO, whatever these are set to. Change them with [Update app](/api-reference/update-app). hide_entity_created_by: type: boolean title: Hide Entity Created By description: >- Whether the app's entity records leave out the email of the user who created each one (`created_by`). Newer apps always leave the email out, whatever this is set to. default: false example: true is_remixable: type: boolean title: Is Remixable description: >- Whether others can remix the app. While it's `true`, the published app also shows the Base44 badge if `public_settings` is `public_with_login` or `public_without_login`. default: false example: false main_branch_protected: type: boolean title: Main Branch Protected description: >- Whether the app's main branch is protected, so changes to main must go through a branch that's merged back. Always `true` for imported apps. Change it with [Set main branch protection](/api-reference/set-main-branch-protection). default: false example: false slug: anyOf: - type: string - type: 'null' title: Slug description: >- URL slug for the app, auto generated from the name and app ID or set to a custom value, or `null` if the app has no slug yet. The published URL is built from it. example: my-crm-3c45a1f2 is_unpublished: type: boolean title: Is Unpublished description: >- Whether the app was taken offline with [Unpublish app](/api-reference/unpublish-app) and hasn't been published again since. While it's `true`, the published URL is offline and `last_deployed_at` still shows the last publish. default: false example: false last_deployed_at: anyOf: - type: string format: date-time - type: 'null' title: Last Deployed At description: >- Time the app was last published, as a UTC timestamp in ISO 8601 format, or `null` if it has never been published. example: '2026-08-02T14:30:00' screenshot_url: anyOf: - type: string - type: 'null' title: Screenshot Url description: >- URL of a screenshot of the published app. Captured shortly after each publish, so it can briefly lag or be `null` right after publishing. example: https://storage.base44.com/screenshots/6820f3a4e7b91d003c45a1f2.png preview_screenshot_url: anyOf: - type: string - type: 'null' title: Preview Screenshot Url description: >- URL of a preview screenshot taken before publishing, distinct from `screenshot_url`, or `null` if none has been captured. example: https://storage.base44.com/previews/6820f3a4e7b91d003c45a1f2.png owner_id: anyOf: - type: string - type: 'null' title: Owner Id description: >- ID of the user who owns the app. It starts as the creator and changes when ownership is transferred. example: 6706af53b9c1e2004a37d85f status: $ref: '#/components/schemas/StatusObject' description: >- The app's current build status. Poll while a build is in progress to watch it finish. This tracks building, not publishing. dev_environment_enabled: type: boolean title: Dev Environment Enabled description: >- Whether test data is on, which gives the app a test database next to its live one. default: false example: false type: object title: UserApp SlugRejected: properties: detail: type: string title: Detail description: What is wrong with the slug. example: URL slug 'nordwind' is already in use suggestions: items: type: string type: array title: Suggestions description: >- Up to five unused slugs close to the one you sent, present only when that slug is taken. Empty when Base44 could not come up with any. example: - nordwind-furniture - nordwind-shop type: object required: - detail title: SlugRejected description: Why the slug was not accepted. HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail type: object title: HTTPValidationError AuthConfiguration: properties: enable_username_password: type: boolean title: Enable Username Password description: Whether people can sign in to the app with an email and password. default: false example: true enable_google_login: type: boolean title: Enable Google Login description: Whether people can sign in to the app with a Google account. default: true example: true enable_microsoft_login: type: boolean title: Enable Microsoft Login description: Whether people can sign in to the app with a Microsoft account. default: false example: false enable_facebook_login: type: boolean title: Enable Facebook Login description: Whether people can sign in to the app with a Facebook account. default: false example: false enable_apple_login: type: boolean title: Enable Apple Login description: Whether people can sign in to the app with an Apple account. default: false example: false type: object title: AuthConfiguration description: Authentication configuration for user applications StatusObject: properties: state: type: string enum: - ready - processing - error title: State description: >- Where the app is in its build lifecycle. Ready means idle with no build in progress, processing means the app is being generated or modified, and error means the last build failed. This tracks building, not publishing. example: ready details: anyOf: - type: string - type: 'null' title: Details description: >- Human readable note about the current state, such as what is being processed or why it failed, or `null` when there is nothing to report. example: Publishing app request_id: anyOf: - type: string - type: 'null' title: Request Id description: >- ID of the request that last changed the status, or `null` if the status has never changed. Useful when reporting an issue. example: a1b2c3d4e5f67890abcdef12 last_updated_date: anyOf: - type: string format: date-time - type: 'null' title: Last Updated Date description: >- Time the status was last updated, as a UTC timestamp in ISO 8601 format. example: '2026-08-02T14:30:00Z' error_source: anyOf: - type: string - type: 'null' title: Error Source description: >- Where the failure originated when `state` is `error`, or `null` otherwise. A value of `paywall` means the work was blocked because the app's workspace has no credits left. example: build paywall_context: anyOf: - $ref: '#/components/schemas/PaywallStatusContext' - type: 'null' description: >- Present when the operation was blocked by a plan limit, describing what was evaluated, or `null` otherwise. type: object required: - state title: StatusObject description: The app's current build status. ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location msg: type: string title: Message type: type: string title: Error Type type: object required: - loc - msg - type title: ValidationError PaywallStatusContext: properties: billing_organization_id: type: string title: Billing Organization Id description: ID of the billing organization the paywall was evaluated against. example: 67e0b12c4d8a3f005b21c9e4 user_id: type: string title: User Id description: ID of the user the paywall was evaluated for. example: 6706af53b9c1e2004a37d85f evaluated_at: type: string format: date-time title: Evaluated At description: >- Time the paywall condition was evaluated, as a UTC timestamp in ISO 8601 format. example: '2026-08-02T14:30:00Z' type: object required: - billing_organization_id - user_id - evaluated_at title: PaywallStatusContext securitySchemes: PersonalAccessTokenAuth: type: http scheme: bearer description: >- Personal access token, sent as `Authorization: Bearer `. Each operation lists the permission it needs: `read_only` or `full_access`. A full-access token can call every operation. A read-only token can call only the operations that list `read_only`; anything else returns 403 `read_only_credential_route_not_allowed`. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.