Legion

Overview

Legion is an MCP server that enables LLM councils for debates, juries, blind panels, refinement, and custom deliberation. It works as a Model Context Protocol native implementation, exposing deliberation capabilities as tools that your AI assistant can invoke directly.

Legion runs locally on your machine via the npm package legion-mcp, which communicates over stdio using the MCP protocol. Installation is simple with npx -y legion-mcp, and you'll need to set the MCP_TRANSPORT environment variable along with an API Key for authentication. The latest release is v0.4.1, available from the faulkj/legion-mcp repository on GitHub.

Legion is listed in the AI & Agents category and works with Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and other MCP clients. If you maintain Legion, you're welcome to claim this listing to verify ownership and keep the information up to date.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "legion": {
      "command": "npx",
      "args": [
        "-y",
        "legion-mcp"
      ],
      "env": {
        "MCP_TRANSPORT": "<mcp-transport>"
      }
    }
  }
}

Requires MCP_TRANSPORT