# Add a User to a Group

POST https://api.close.com/api/v1/group/{group_id}/member/
Content-Type: application/json

Add a user to a group by providing the `user_id`. If the user is already a member, nothing changes.

Reference: https://developer.close.com/api/resources/groups/add-member

## OpenAPI Specification

```yaml
openapi: 3.1.0
info:
  title: Close API
  version: 1.0.0
paths:
  /group/{group_id}/member/:
    post:
      operationId: add-member
      summary: Add a User to a Group
      description: >-
        Add a user to a group by providing the `user_id`. If the user is already
        a member, nothing changes.
      tags:
        - subpackage_groups
      parameters:
        - name: group_id
          in: path
          required: true
          schema:
            type: string
        - name: Authorization
          in: header
          description: Basic authentication
          required: true
          schema:
            type: string
      responses:
        '201':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GroupMember'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                description: Any type
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                description: Any type
        '404':
          description: Not found
          content:
            application/json:
              schema:
                description: Any type
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateGroupMember'
servers:
  - url: https://api.close.com/api/v1
components:
  schemas:
    CreateGroupMember:
      type: object
      properties:
        user_id:
          type: string
      required:
        - user_id
      title: CreateGroupMember
    GroupMember:
      type: object
      properties:
        user_id:
          type: string
      required:
        - user_id
      title: GroupMember
  securitySchemes:
    ApiKeyAuth:
      type: http
      scheme: basic
    OAuth2:
      type: http
      scheme: bearer

```