openapi: 3.1.0
info:
  title: Mattermost REST Channels API
  version: '4'
  description: 'Mattermost REST API v4 for managing users, teams, channels, posts, threads,

    files, integrations, plugins, webhooks, slash commands, and OAuth

    applications on a self-hosted or cloud Mattermost server. Authentication

    uses Personal Access Tokens or session tokens carried as a Bearer token.

    '
  contact:
    name: Mattermost API Documentation
    url: https://developers.mattermost.com/api-documentation
servers:
- url: https://{your-mattermost-server}/api/v4
  description: Self-hosted Mattermost server
  variables:
    your-mattermost-server:
      default: your-mattermost-server.com
      description: Hostname of your Mattermost server
security:
- bearerAuth: []
tags:
- name: Channels
paths:
  /channels:
    get:
      tags:
      - Channels
      summary: List all channels (sysadmin)
      responses:
        '200':
          description: Channels
    post:
      tags:
      - Channels
      summary: Create a channel
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Channel'
      responses:
        '201':
          description: Channel created
  /channels/{channel_id}:
    parameters:
    - in: path
      name: channel_id
      required: true
      schema:
        type: string
    get:
      tags:
      - Channels
      summary: Get a channel
      responses:
        '200':
          description: Channel
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Channel'
    put:
      tags:
      - Channels
      summary: Update a channel
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Channel'
      responses:
        '200':
          description: Updated
    delete:
      tags:
      - Channels
      summary: Archive a channel
      responses:
        '200':
          description: Archived
  /channels/direct:
    post:
      tags:
      - Channels
      summary: Create a direct message channel
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: array
              items:
                type: string
      responses:
        '201':
          description: DM channel
  /channels/group:
    post:
      tags:
      - Channels
      summary: Create a group message channel
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: array
              items:
                type: string
      responses:
        '201':
          description: Group channel
  /channels/{channel_id}/members:
    parameters:
    - in: path
      name: channel_id
      required: true
      schema:
        type: string
    get:
      tags:
      - Channels
      summary: List channel members
      responses:
        '200':
          description: Members
    post:
      tags:
      - Channels
      summary: Add a user to a channel
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                user_id:
                  type: string
      responses:
        '201':
          description: Added
  /channels/{channel_id}/members/{user_id}:
    delete:
      tags:
      - Channels
      summary: Remove a user from a channel
      parameters:
      - in: path
        name: channel_id
        required: true
        schema:
          type: string
      - in: path
        name: user_id
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Removed
  /teams/{team_id}/channels:
    get:
      tags:
      - Channels
      summary: Get public channels for a team
      parameters:
      - in: path
        name: team_id
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Channels
components:
  schemas:
    Channel:
      type: object
      properties:
        id:
          type: string
        team_id:
          type: string
        type:
          type: string
        display_name:
          type: string
        name:
          type: string
        header:
          type: string
        purpose:
          type: string
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: Personal Access Token or session token issued by /users/login.