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Mattermost

MCP server for Mattermost API. List channels, read/post messages, manage threads and reactions, monitor topics. Supports flexible configuration via CLI args, environment variables, or config files.

communicationreactapi

Installation

npx -y mattermost-mcp

Configuration

{
  "mcpServers": {
    "mattermost-mcp": {
      "command": "npx",
      "args": ["-y", "mattermost-mcp"]
    }
  }
}

How to use

  1. Run the installation command above (if needed)
  2. Open your Claude Code settings file (~/.claude/settings.json)
  3. Add the configuration to the mcpServers section
  4. Restart Claude Code to apply changes
View source on GitHub