> ## Documentation Index > Fetch the complete documentation index at: https://docs.replicas.dev/llms.txt > Use this file to discover all available pages before exploring further. # Upload Workspace Canvas Item > Uploads a file to the workspace Canvas. Active workspaces return 200 after writing the file. Preparing, sleeping, and archived workspaces return 202 and queue the upload until startup completes; uploading alone does not wake the workspace. Pass the returned uploadId in the related chat message's canvasUploadIds. Sending that message wakes a suspended workspace, and queued uploads are written before the message is delivered. Error workspaces return 409. ## OpenAPI ````yaml /openapi.json post /v1/workspaces/{workspaceId}/canvas openapi: 3.1.0 info: title: Replica API version: 2.0.0 description: >- The Replica API allows you to programmatically manage cloud workspaces for AI agents. Use this API to manage environments (the org-scoped primitive workspaces are created from — including variables, files, skills, MCPs, warm hooks, start hooks, and warm pools), create and manage replicas, send messages, manage chats, stream events, read connected repositories and repository sets, and configure automations. servers: - url: https://api.replicas.dev description: Production API security: - apiKey: [] tags: - name: Environments description: >- Manage environments — the primitive that workspaces are created from. Variables, files, skills, MCPs, warm-hooks, and warm-pools are all scoped to an environment. Every organization has a singleton Global environment whose values apply to every workspace. Personal environments are scoped to the authenticated user and can be standalone or source-backed by a team environment. - name: Repository description: >- Read repositories and repository sets connected to your organization. Repositories are the underlying GitHub-connection layer; bind them to an environment to use them in workspaces. - name: Replica description: >- Manage replicas (workspaces) for AI agents. Workspace creation with `POST /v1/replica` accepts API keys and workspace engine-secret authentication. Other Replica operations also accept logged-in user JWTs from first-party clients. - name: Terminal description: Manage interactive terminal sessions in active workspaces - name: Preview description: Manage public preview URLs for workspace ports - name: Profile description: Read and update the authenticated user's profile - name: Credentials description: >- Manage coding-agent credentials for an organization or the authenticated user - name: Preferences description: Manage organization behavior preferences - name: Slack description: Connect Slack identities and route threads to Replicas workspaces - name: Linear description: Connect Linear identities to Replicas accounts - name: Automation description: >- Create and manage automations that trigger replicas on a schedule or in response to events - name: Downloads description: Download Replicas applications - name: Media description: >- Read workspace media and obtain short-lived download or inline preview URLs - name: Analytics description: >- Read aggregated activity and usage metrics for your organization: compute minutes, workspaces created by source, and pull request throughput over a time range. - name: Presence description: >- Read and report ephemeral member presence: who is online, where they are (environment or workspace), and whether they are typing. Presence is backed by short-lived keys rather than the database and broadcast to other members over the events stream. - name: Plugins description: >- Install and manage native and Composio-backed workspace plugins. A plugin installs for a single environment, for the whole organization (which uses the Global environment), or for one member personally. A workspace uses the most specific installation available: personal, then its own environment, then the environment it was branched from, then Global. Composio Connect Links host managed OAuth, custom OAuth, API-key, bearer-token, basic, and dynamic OAuth authentication without exposing provider credentials to Replicas. paths: /v1/workspaces/{workspaceId}/canvas: post: tags: - Replica summary: Upload Workspace Canvas Item description: >- Uploads a file to the workspace Canvas. Active workspaces return 200 after writing the file. Preparing, sleeping, and archived workspaces return 202 and queue the upload until startup completes; uploading alone does not wake the workspace. Pass the returned uploadId in the related chat message's canvasUploadIds. Sending that message wakes a suspended workspace, and queued uploads are written before the message is delivered. Error workspaces return 409. operationId: uploadWorkspaceCanvasItem parameters: - name: workspaceId in: path required: true schema: type: string format: uuid requestBody: required: true content: multipart/form-data: schema: type: object properties: file: type: string format: binary filename: type: string description: >- Optional Canvas-relative destination path. Defaults to the uploaded file name. required: - file responses: '200': description: File uploaded to an active workspace content: application/json: schema: $ref: '#/components/schemas/UploadWorkspaceCanvasItemResponse' '202': description: File queued while the workspace starts content: application/json: schema: $ref: '#/components/schemas/UploadWorkspaceCanvasItemResponse' '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '404': $ref: '#/components/responses/NotFound' '409': $ref: '#/components/responses/Conflict' '413': description: File exceeds the 25 MB Canvas limit content: application/json: schema: $ref: '#/components/schemas/Error' '500': $ref: '#/components/responses/InternalServerError' components: schemas: UploadWorkspaceCanvasItemResponse: type: object description: >- A Canvas upload accepted immediately or queued until the workspace is active. properties: filePath: type: string description: Canvas display path for the uploaded file. example: ~/.replicas/canvas/report.pdf originalName: type: string description: Normalized Canvas-relative file name. example: report.pdf sizeBytes: type: integer minimum: 0 uploadId: type: string description: >- Present when the upload was queued. Pass it in the related message's `canvasUploadIds`. required: - filePath - originalName - sizeBytes Error: type: object properties: error: type: string description: Error message details: type: - string - 'null' description: Additional error details code: type: string description: Machine-readable error code when available required: - error responses: BadRequest: description: Bad request - Missing or invalid parameters content: application/json: schema: $ref: '#/components/schemas/Error' Unauthorized: description: Unauthorized - Invalid or missing API key content: application/json: schema: $ref: '#/components/schemas/Error' NotFound: description: Resource not found content: application/json: schema: $ref: '#/components/schemas/Error' Conflict: description: >- Conflict - Resource already exists or operation conflicts with current state content: application/json: schema: $ref: '#/components/schemas/Error' InternalServerError: description: Internal server error content: application/json: schema: $ref: '#/components/schemas/Error' securitySchemes: apiKey: type: http scheme: bearer description: >- API key authentication. Obtain your API key from the Replicas dashboard under Organization → Settings → API Keys. ````