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

# List a Folder's Children

> List the direct children of a folder. The response items are a discriminated union of subfolders and files: subfolders are returned first (alphabetical), then files (alphabetical).



## OpenAPI

````yaml GET /folders/{id}/children
openapi: 3.0.3
info:
  title: GC AI External API
  version: 1.0.0
  description: >-
    The GC AI External API allows programmatic access to GC AI's chat
    capabilities. It's designed for integration with workflow automation tools
    like Zapier, Make, n8n, or custom applications.


    ## Authentication


    All API requests must include an API key in the `Authorization` header:


    ```

    Authorization: gcai_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

    ```


    API keys can be created in the GC AI app under **Settings → API**.


    ## Current Limitations


    The API is optimized for single-turn completions. The following are not yet
    available via API:


    - **Multi-turn conversations**: each request is independent

    - **Interactive clarification**: the model cannot pause to ask the caller a
    follow-up question; the `askUserQuestions` tool is disabled on the API
    surface in beta


    ## Usage


    Usage is tracked and viewable in the GC AI app under **Settings → API → View
    Usage**.


    ## Support


    For API support, contact [support@gc.ai](mailto:support@gc.ai) or reach out
    to your account representative.
  contact:
    email: support@gc.ai
servers:
  - url: https://app.gc.ai/api/external/v1
    description: Production server
security: []
tags:
  - name: Chat
    description: AI chat completion endpoints
  - name: Files
    description: File upload and management endpoints
  - name: Folders
    description: Folder management endpoints
  - name: Playbooks
    description: Playbook review endpoints
  - name: Projects
    description: Project management endpoints
  - name: Utility
    description: Health check and connectivity endpoints
paths:
  /folders/{id}/children:
    get:
      tags:
        - Folders
      summary: List a folder's children
      description: >-
        List the direct children of a folder. The response items are a
        discriminated union of subfolders and files: subfolders are returned
        first (alphabetical), then files (alphabetical).
      operationId: listFolderChildren
      parameters:
        - schema:
            type: string
            format: uuid
            description: The folder ID
          required: true
          description: The folder ID
          name: id
          in: path
      responses:
        '200':
          description: Direct children of the folder
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FolderChildrenResponse'
        '401':
          description: Missing or malformed API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Invalid API key
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Folder not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '503':
          description: Service temporarily unavailable
          headers:
            Retry-After:
              schema:
                type: string
                description: >-
                  Seconds to wait before retrying after a transient service
                  outage.
                example: '5'
              required: true
              description: >-
                Seconds to wait before retrying after a transient service
                outage.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
        - ApiKeyAuth: []
components:
  schemas:
    FolderChildrenResponse:
      type: object
      properties:
        items:
          type: array
          items:
            $ref: '#/components/schemas/FolderChild'
          description: >-
            Direct children of the folder. Subfolders first (alphabetical), then
            files (alphabetical).
      required:
        - items
    Error:
      type: object
      properties:
        error:
          type: string
          description: Error message
        message:
          type: string
          description: Additional error details
        details:
          type: object
          additionalProperties:
            nullable: true
          description: Validation error details (for 400 errors)
      required:
        - error
    FolderChild:
      oneOf:
        - allOf:
            - $ref: '#/components/schemas/Folder'
            - type: object
              properties:
                type:
                  type: string
                  enum:
                    - folder
              required:
                - type
        - allOf:
            - $ref: '#/components/schemas/File'
            - type: object
              properties:
                type:
                  type: string
                  enum:
                    - file
              required:
                - type
    Folder:
      type: object
      properties:
        id:
          type: string
          format: uuid
          description: Unique folder identifier
        name:
          type: string
          description: Folder name
        description:
          type: string
          nullable: true
          description: Folder description, or null if unset
        path:
          type: string
          description: >-
            Path through ancestors visible to the requester. Inaccessible
            ancestors are skipped, so this may not reflect absolute depth. Use
            `parent_folder_id` to traverse hierarchy.
          example: /My Files/Contracts
        parent_folder_id:
          type: string
          nullable: true
          format: uuid
          description: Parent folder ID, or null for root
        folder_type:
          type: string
          description: Folder type (custom, my-files, etc.)
        created_at:
          type: string
          description: ISO 8601 creation timestamp
      required:
        - id
        - name
        - description
        - path
        - parent_folder_id
        - folder_type
        - created_at
    File:
      type: object
      properties:
        id:
          type: string
          format: uuid
          description: Unique file identifier
        name:
          type: string
          description: Original filename
        size:
          type: number
          description: File size in bytes
        content_type:
          type: string
          description: MIME type of the file
        status:
          type: string
          enum:
            - extracting
            - embedding
            - ready
            - failed
          description: Current processing status
        created_at:
          type: string
          description: ISO 8601 creation timestamp
      required:
        - id
        - name
        - size
        - content_type
        - status
        - created_at
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: Authorization
      description: |-
        API key for authentication. Format: `gcai_xxxxxxxxx`

        Create API keys in the GC AI app under Settings → API.

````