MCP Server Code Runner

How to install MCP Server Code Runner

Built from the start command in the project's README: npx -y mcp-server-code-runner@latest. Check the README for required keys or settings.

claude mcp add mcp-server-code-runner -- npx -y mcp-server-code-runner@latest

{
  "mcpServers": {
    "mcp-server-code-runner": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-code-runner@latest"
      ]
    }
  }
}

{
  "mcpServers": {
    "mcp-server-code-runner": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-server-code-runner@latest"
      ]
    }
  }
}

code --add-mcp '{"name":"mcp-server-code-runner","command":"npx","args":["-y","mcp-server-code-runner@latest"]}'

What MCP Server Code Runner can touch

• Seen in this scan, either in the code or while it ran.Run shell commandsFound in the code by our scan
• Our checks did not find this. The tool may still do it.Run dynamic codeNot seen in this scan
• Our checks did not find this. The tool may still do it.Read or write filesNot seen in this scan
• Our checks did not find this. The tool may still do it.Read environment and secretsNot seen in this scan
• Our checks did not find this. The tool may still do it.Control a web browserNot seen in this scan
• Our checks did not find this. The tool may still do it.Connect to databasesNot seen in this scan
• Our checks did not find this. The tool may still do it.Read or send messagesNot seen in this scan
• Our checks did not find this. The tool may still do it.Touch money or tradingNot seen in this scan
• Our checks did not find this. The tool may still do it.Connect to the internetNo connections seen while running

"Not seen" means our checks did not find it, and the tool may still do it. Covers commit 529b5ed, Nov 5, 2026. See the scan policy.