Building a Code-Editing Agent in 94 Lines of Ruby

This article challenges the perceived difficulty of building a code-editing agent, showcasing a fully functional one built in just 94 lines of Ruby using the RubyLLM gem. The agent leverages a Large Language Model (LLM) and three tools – read file, list files, and edit file – to perform code editing tasks. The author details the implementation of each tool and demonstrates the agent's capabilities by building an ASCII Minesweeper game. A shell command execution tool is added to enhance functionality, resulting in a self-testing code-editing agent.