Composer

Overview

Composer is a Model Context Protocol server that provides your AI coding agent with an architecture canvas for designing and evolving diagrams. Instead of switching between tools and copying content manually, AI assistants can call Composer directly as a set of integrated tools.

The server runs locally on your machine using the npm package @usecomposer/mcp, which communicates via stdio. No authentication or credentials are needed. The latest release is v0.1.7, distributed under the MIT license with source code available at olivergrabner/composer-mcp on GitHub.

Composer is listed in the Design category on mcp.site and works with any MCP client including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and Zed. If you maintain this project, claim your listing to earn the Verified badge and ensure the information stays accurate.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "composer": {
      "command": "npx",
      "args": [
        "-y",
        "@usecomposer/mcp"
      ]
    }
  }
}