Mattermost MCP Server

MCP server for Mattermost with npx support.

Installation and Usage

Via npx

MATTERMOST_URL=https://mattermost.company.com \
MATTERMOST_TOKEN=your-token \
npx github:anton-sobolev-zhr/mattermost-mcp

MCPHub Configuration

{
  "mcpServers": {
    "mattermost": {
      "command": "npx",
      "args": ["github:anton-sobolev-zhr/mattermost-mcp"],
      "env": {
        "MATTERMOST_URL": "https://mattermost.company.com",
        "MATTERMOST_TOKEN": "your-token",
        "MATTERMOST_KEEPALIVE_MS": "86400000"
      }
    }
  }
}

MATTERMOST_KEEPALIVE_MS defaults to 24 hours. The server makes GET /api/v4/users/me requests to keep the session alive in configurations with ExtendSessionLengthWithActivity.

Related MCP server: time-messenger-mcp-server

Available Tools

• get_thread — get thread content by post ID

• get_post — get single post by ID

• get_channel_posts — get channel messages

• search_posts — search messages

• list_channels — list channels in team

• get_user — get user info by ID

• send_message — send message to channel

• get_unread — get unread messages, threads, and channel summary

• test_connection — test Mattermost connection