Code Execution as a General Tool

A vending machine is quick, safe, and usable by anyone, but it sells only what someone loaded into it. A kitchen can produce a dish that nobody listed in advance, but its knives and stove need a competent cook and safety rules.

Narrow tools resemble the vending machine, and a code execution tool resembles the kitchen. With this tool, the model writes a short program, your system runs it in a sealed environment, and the model reads the output. The question is when that one general tool should replace several narrow ones, and what limits it must run under.