Code Runner

Overview

Code Runner is a Model Context Protocol server that executes code across multiple programming languages. It integrates directly with AI assistants as an MCP tool, letting Claude, Cursor, and other clients run code on your behalf during conversations and tasks.

The server runs locally on your machine via the npm package mcp-server-code-runner, installed with npx -y mcp-server-code-runner. It requires no authentication and works immediately after setup. Version v0.1.9 is available under the MIT license, with source code and development at formulahendry/mcp-server-code-runner on GitHub, where the project has 244 stars.

Code Runner appears in the Development category and works with Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and other MCP clients. If you maintain this server, claim this listing to verify ownership, display the Verified badge, and keep information up to date.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "code_runner": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-code-runner"
      ]
    }
  }
}