MCP Server Code Execution Mode

Skill by ara.so — MCP Skills collection.

This MCP server implements Anthropic's "Code Execution with MCP" pattern, exposing a single run_python tool instead of hundreds of individual tools. The agent writes Python code to discover, call, and compose MCP tools dynamically, reducing context overhead from ~30,000 tokens to ~200 tokens.

Key capabilities:

• Execute Python in rootless Podman/Docker containers
• Proxy any stdio MCP server into the sandbox
• Discover tools at runtime (no context preloading)
• Fuzzy search across all connected servers
• Persistent sessions (variables/state retained)
• Security: no network, read-only filesystem, dropped capabilities

Installation

Prerequisites

Install a container runtime (rootless mode):