mattermost-mcp-host

A Mattermost integration that connects to Model Context Protocol (MCP) servers, using a LangGraph-based AI agent to provide intelligent interaction and tool execution within Mattermost channels.

Source: GitHub - jagan-shanmugam/mattermost-mcp-host

Features

• LangGraph Agent Integration: Utilizes a LangGraph agent to interpret user requests and orchestrate responses.
• MCP Server Integration: Connects to multiple MCP servers as defined in a configuration file.
• Dynamic Tool Loading: Automatically discovers and loads tools from connected MCP servers, making them accessible as structured tools for the AI agent.
• Thread-Aware Conversations: Maintains context within Mattermost threads for coherent, contextual interactions.
• Intelligent Tool Use: The AI agent can determine when and how to use available tools (including chaining multiple tool calls) to fulfill user requests.
• MCP Capability Discovery: Users can list available servers, tools, resources, and prompts through direct commands.
• Direct Command Interface: Interact with MCP servers using a command prefix (default: #).
• Configurable LLM Backend: Supports multiple AI providers (Azure OpenAI by default, OpenAI, Anthropic Claude, Google Gemini) via environment variables.
• Direct Chat & Commands: Chat naturally in the channel or use direct commands for specific actions (help, list servers, list/call tools, list resources, list prompts).
• Demo Scenarios: Includes demonstration of searching GitHub issues/PRs and creating new issues, and searching the internet with results posted to Mattermost.

Usage

• Direct Chat: Converse with the bot in configured channels; the AI agent uses tools and maintains thread context.
• Direct Commands: Use commands like #help, #servers, #<server_name> tools, #<server_name> call <tool_name> <json_arguments>, #<server_name> resources, #<server_name> prompts.

Setup & Requirements

• Python 3.13.1+
• uv package manager
• Mattermost server and bot account with API token
• LLM API access (Azure OpenAI default, other providers optional)
• MCP servers configured (optional for extended features)

See the repository README for full setup instructions, including configuration of environment variables and MCP servers.

Category

messaging-mcp-servers

Tags

mcp, mattermost, messaging, bot

Pricing

Open source (MIT License). No pricing plans specified.