> ## Documentation Index > Fetch the complete documentation index at: https://docs.corbado.com/llms.txt > Use this file to discover all available pages before exploring further. # Update an application > Updates an application in the header-selected project, preserving its ID. Does not reprocess history or remove Android registrations. Required API key permission: `applications:write`. ## OpenAPI ````yaml /api-reference/openapi/connect-backend.yaml put /connect/applications/{applicationID} openapi: 3.1.1 info: version: 2.0.0 title: Corbado Backend API description: > # Introduction This documentation gives an overview of all Corbado Backend API calls to implement passwordless authentication with Passkeys. contact: name: Corbado team email: support@corbado.com url: https://www.corbado.com servers: - url: https://backendapi.cloud.corbado.io/v2 security: - basicAuth: [] - bearerAuth: [] tags: - name: ConnectTokens description: All API calls to manage connectTokens x-group: Connect tokens - name: Passkeys description: All API calls for passkey flows x-group: Passkey ceremonies - name: Users description: All API calls to manage users x-group: Users and passkeys - name: Identifiers description: All API calls to manage login identifiers x-group: Identifiers - name: PasskeyEvents description: All API calls to manage passkey events x-group: Passkey diagnostics - name: PasskeyChallenges description: All API calls to manage passkey challenges x-group: Passkey diagnostics - name: Exports description: All API calls to manage project export files x-group: Data exports - name: Connect reads description: Connect analytics, process investigation and configuration reads. x-group: Analytics and configuration - name: ConnectManagement description: Connect application and native-app configuration management. x-group: App configuration - name: ConnectRollout description: Connect rollout configuration, rulesets, targeting and simulations. x-group: Rollout configuration - name: Sessions description: All API calls to manage sessions - name: Challenges description: All API calls to manage challenges - name: SSO description: All API calls for SSO flows - name: AuthEvents description: All API calls to manage authentication events - name: ProjectConfig description: All API calls to manage project configurations - name: WebhookEndpoints description: All API calls to manage webhook endpoints - name: PasswordManagers description: All API calls to manage password managers - name: ClientEnvs description: All API calls to manage client environments - name: Devices description: All API calls to manage devices paths: /connect/applications/{applicationID}: put: tags: - ConnectManagement summary: Update an application description: >- Updates an application in the header-selected project, preserving its ID. Does not reprocess history or remove Android registrations. Required API key permission: `applications:write`. operationId: publicApplicationUpdate parameters: - name: applicationID in: path required: true schema: type: string pattern: ^[1-9][0-9]*$ requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/ConnectReadBackendConnectApplicationSaveReq' responses: '200': description: Saved application content: application/json: schema: $ref: >- #/components/schemas/ConnectReadBackendConnectApplicationSaveRsp default: description: Error content: application/json: schema: allOf: - type: object required: - httpStatusCode - message - requestData - runtime properties: httpStatusCode: description: HTTP status code of operation type: integer format: int32 message: type: string example: OK requestData: description: >- Data about the request itself, can be used for debugging type: object required: - requestID properties: requestID: description: >- Unique ID of request, you can provide your own while making the request, if not the ID will be randomly generated on server side type: string example: req-557...663 link: description: Link to dashboard with details about request type: string example: >- https://my.corbado.com/requests/req-xxxxxxxxxxxxxxxxxxx runtime: description: Runtime in seconds for this request type: number format: float example: 0.06167686 - type: object required: - error properties: data: type: object error: type: object required: - type properties: type: description: Type of error type: string details: description: Details of error type: string validation: description: Validation errors per field type: array items: type: object required: - field - message properties: field: type: string message: type: string links: description: Additional links to help understand the error type: array items: type: string security: - basicAuth: [] - bearerAuth: - applications:write components: schemas: ConnectReadBackendConnectApplicationSaveReq: type: object required: - name - clientType - clientIdentifier properties: name: type: string minLength: 1 maxLength: 100 clientType: type: string enum: - web - app - api clientIdentifier: type: string maxLength: 100 description: >- Package or bundle identifier for native applications; unused for web matching. osName: type: string enum: - android - iOS description: >- Omit for native applications matching either OS. Must be omitted for web and API applications. androidFingerprintsToAdd: type: array maxItems: 20 description: >- Optional SHA-256 certificates to register atomically for this Android package. Existing registrations are retained. items: type: string pattern: ^([A-Fa-f0-9]{2}:){31}[A-Fa-f0-9]{2}$ ConnectReadBackendConnectApplicationSaveRsp: type: object required: - item properties: item: $ref: '#/components/schemas/ConnectReadBackendConnectApplication' ConnectReadBackendConnectApplication: type: object required: - id - projectID - name - clientType - clientIdentifier - createdMs properties: id: type: string projectID: type: string name: type: string clientType: type: string clientIdentifier: type: string osName: type: string createdMs: type: integer format: int64 securitySchemes: basicAuth: type: http scheme: basic description: > Basic authentication is used to authenticate requests to the Backend API. The username is the project ID and the password is the API secret. The project ID and API secret can be found in the [Management Console](https://app.corbado.com/settings/api-secrets). bearerAuth: type: http scheme: bearer description: >- Use your versioned Backend API key. The key must grant the operation permission and satisfy its expiry and IP restrictions. ````