Safe Local Python Executor

Example Use Cases

• 1

  Execute small to medium Python scripts generated by LLMs with basic sandboxing and no file I/O.

• 2

  A Code Interpreter plugin-like tool in Claude Desktop or other MCP clients to run computations, data processing, or debugging snippets.

• 3

  A quick local alternative to containerized or remote code execution when stronger isolation isn't required but raw eval is too unsafe.

Description

This MCP server wraps smolagents' LocalPythonExecutor to provide a restricted, safer Python execution environment over the MCP (stdio) transport. It disallows file I/O, limits available imports, and runs in a managed virtualenv via uv, making it suitable as a Code Interpreter tool for clients like Claude Desktop. The package is lightweight to run locally and offers a trade-off between convenience and security compared to running raw eval or spinning up containers/VMs. It integrates with Claude Desktop and other MCP-compatible clients to expose a run_python tool.