E2B Code Sandbox MCP Server

MCP Server Configuration

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{
  "mcpServers": {
    "e2b": {
      "command": "npx",
      "args": ["-y", "@e2b/mcp-server"],
      "env": {
        "E2B_API_KEY": "<your-api-key>"
      }
    }
  }
}

Available Tools

Tool	Description
run_code	Execute code in a sandboxed environment
install_packages	Install pip/npm packages in the sandbox
upload_file	Upload a file to the sandbox filesystem
download_file	Download a file from the sandbox
list_sandboxes	List active sandbox instances
create_sandbox	Create a new sandbox with specific configuration
kill_sandbox	Terminate a running sandbox

Use Cases

• Safe code execution: Run LLM-generated code without local risk
• Data analysis: Process datasets in isolated Python environments
• Package testing: Test npm/pip packages before adding to your project
• Prototyping: Quickly test algorithms or API integrations
• CI/CD validation: Run build scripts in clean environments

Supported Environments

• Python 3.11+ with pip
• Node.js 20+ with npm
• Custom Docker templates for specialized environments
• Pre-installed: pandas, numpy, requests, and common libraries

Setup

1. Sign up at https://e2b.dev
2. Get your API key from the dashboard
3. Replace <your-api-key> with your actual key
4. Free tier includes 100 sandbox hours/month

Security Notes

• Code runs in isolated microVMs - no access to your local filesystem
• Each sandbox is ephemeral and destroyed after use
• Network access is available within sandboxes - be aware of outbound calls
• API key controls sandbox creation and execution
• Sandbox timeout defaults to 5 minutes (configurable)
• Review code before execution, especially network-accessing scripts