# Check if category name is already in use

Validates category name availability within the forum during creation. Returns whether the name is already taken within the group's forum. Requires GroupForum.Manage permission.

RBAC: requires GroupForum.Manage

Endpoint: GET /api/v1/groups/{groupId}/categories/namecheck/{categoryName}
Version: 1.0
Security: 

## Path parameters:

  - `categoryName` (string, required)
    The category name (slug) to check for availability. Must be lowercase alphanumeric with hyphens (not leading/trailing/consecutive).
    Example: "general-discussion"

  - `groupId` (string, required)
    The unique identifier of the group
    Example: "us_01hxcvk1hjexere4pvtrj0ymqq"

## Response 200 fields (application/json):

  - `exists` (boolean, required)
    Whether the category name already exists in the forum
    Example: true

## Response 401 fields (application/json):

  - `errorCode` (string, required)
    Error code

  - `message` (string, required)
    Error message

  - `docUrl` (string)
    Link to documentation

## Response 403 fields (application/json):

  - `errorCode` (string, required)
    Error code

  - `message` (string, required)
    Error message

  - `docUrl` (string)
    Link to documentation

## Response 404 fields (application/json):

  - `errorCode` (string, required)
    Error code

  - `message` (string, required)
    Error message

  - `docUrl` (string)
    Link to documentation