> ## 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.

# Create an empty knowledge collection

> Create a named collection owned by the current end user. Does not add content.



## OpenAPI

````yaml /api-reference/openapi.json post /api/v1/knowledge/collections
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/knowledge/collections:
    post:
      tags:
        - Knowledge
      summary: Create an empty knowledge collection
      description: >-
        Create a named collection owned by the current end user. Does not add
        content.
      operationId: KnowledgeController_createCollection
      parameters:
        - name: x-username
          in: header
          required: false
          description: >-
            External user (end user) to act as. Optional — if omitted, Flowra
            uses the project’s default external user. Send a stable username
            (e.g. customer_alice) only when you need another end-user context.
          schema:
            type: string
            default: (project default user)
          example: customer_alice
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/KnowledgeCreateCollectionDto'
      responses:
        '200':
          description: Collection created successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/KnowledgeCollectionInfoDtoSuccessResponse'
              example:
                success: true
                message: Operation completed successfully
                data:
                  id: 755ab29c-2864-5cfd-9c2b-4953f7314b21
                  name: docs
                  chunkCount: 42
                  exposeViaMcp: true
                  ownerEUID: usr_ext_abc123
      security:
        - x-api-key: []
        - x-api-key: []
          x-username: []
components:
  schemas:
    KnowledgeCreateCollectionDto:
      type: object
      properties:
        name:
          type: string
          minLength: 1
          maxLength: 120
          description: Display name for the new collection
          example: Support docs
      required:
        - name
    KnowledgeCollectionInfoDtoSuccessResponse:
      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
              description: >-
                Collection ID (use for knowledgeCollectionIds when creating
                agents)
              example: 755ab29c-2864-5cfd-9c2b-4953f7314b21
            name:
              type: string
              description: Collection name
              example: docs
            chunkCount:
              type: number
              description: Number of chunks in this collection
              example: 42
            exposeViaMcp:
              type: boolean
              description: >-
                When true, MCP tools may list and search this collection
                (read-only)
              default: false
            ownerEUID:
              type: string
              description: >-
                External user id of the collection owner (required for non-admin
                knowledge tools)
              example: usr_ext_abc123
          required:
            - id
            - name
          example:
            id: 755ab29c-2864-5cfd-9c2b-4953f7314b21
            name: docs
            chunkCount: 42
            exposeViaMcp: true
            ownerEUID: usr_ext_abc123
      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>
    x-username:
      type: apiKey
      in: header
      name: x-username
      description: >-
        Optional. External user username. If omitted, Flowra uses the project’s
        default external user. Send as header: x-username: <username>

````