> ## Documentation Index
> Fetch the complete documentation index at: https://docs.flowra.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Upload a single file

> Upload a file (image or document) via multipart form. Pass the file type in the URL path. Returns the file ID to use in other APIs (e.g. knowledge, workflows).



## OpenAPI

````yaml /api-reference/openapi.json post /api/v1/file/upload/single/{fileType}
openapi: 3.0.0
info:
  title: Flowra API (API Key Endpoints)
  description: >-
    **Flowra** is an AI-powered platform for building agents, workflows, and
    integrations.


    ### Capabilities

    - **Tools & Toolkits** – Define and group tools for agents and workflows.

    - **Workflows** – Orchestrate steps and automate processes.

    - **Triggers** – Schedule or event-based execution.

    - **Auth & Connections** – OAuth, API keys, and connected accounts.

    - **MCP** – Model Context Protocol server integration.

    - **Knowledge / RAG** – Add files and URLs for retrieval-augmented
    generation.


    ### Authentication

    Use the **x-api-key** header with a project API key to access endpoints that
    support API Key auth. Create and manage API keys in the dashboard under your
    project settings.


    Only endpoints that support API Key authentication via the @ApiKeyEnabled()
    decorator.


    Send x-api-key (required). On multi-tenant endpoints, optionally send
    x-username to act as an external user.
  version: '1.0'
  contact:
    name: Flowra
    url: https://flowra.dev
servers:
  - url: https://flowra.dev
    description: Flowra API
security: []
tags:
  - name: Users
    description: User profile
  - name: External Users
    description: End-user identities inside a project (x-username)
  - name: Auth Configs
    description: OAuth and API key configs for toolkits
  - name: Connected Accounts
    description: OAuth connected accounts and link creation
  - name: Toolkits
    description: List and search toolkits
  - name: Tools
    description: List, execute, and manage tools
  - name: Skills
    description: Browse, create, import, and install skills
  - name: Workflow & Agent
    description: Create, run, and inspect workflows and agents
  - name: Triggers
    description: Schedule and event-based trigger instances
  - name: Chat
    description: Threads and streaming agent runs
  - name: File
    description: Upload, list, and download files
  - name: Knowledge
    description: RAG knowledge collections
  - name: Table
    description: Collections and documents
  - name: Sandbox
    description: Ephemeral and durable code sandboxes
  - name: Browser
    description: Live browser sessions and view
  - name: LLM
    description: List AI models and generate completions
  - name: MCP
    description: MCP server management
  - name: usage
    description: Credit balance and usage ledger for the project API key
paths:
  /api/v1/file/upload/single/{fileType}:
    post:
      tags:
        - File
      summary: Upload a single file
      description: >-
        Upload a file (image or document) via multipart form. Pass the file type
        in the URL path. Returns the file ID to use in other APIs (e.g.
        knowledge, workflows).
      operationId: FileController_uploadSingleFile
      parameters:
        - name: fileType
          required: true
          in: path
          schema:
            type: string
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              properties:
                file:
                  type: string
                  format: binary
      responses:
        '201':
          description: File uploaded; returns file ID
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/IdDtoSuccessResponse'
      security:
        - x-api-key: []
components:
  schemas:
    IdDtoSuccessResponse:
      type: object
      properties:
        success:
          type: boolean
          description: Success status
          example: true
        message:
          type: string
          description: Success message
          example: Operation completed successfully
        data:
          type: object
          properties:
            id:
              type: string
              example: 3e8a222c-be35-4bb7-a0a3-4013d086878e
          required:
            - id
          example:
            id: 3e8a222c-be35-4bb7-a0a3-4013d086878e
      required:
        - success
        - message
        - data
  securitySchemes:
    x-api-key:
      type: apiKey
      in: header
      name: x-api-key
      description: >-
        Project API key. Create and manage keys in the dashboard under Project →
        API Keys. Send as header: x-api-key: <your-key>

````

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