mi: A 30-line zero-config CLI autonomous coding agent for bug fixes and refactoring
By
Ivan Charapanau
Hard crust, hollow middle. Skim only.
Summary
mi is a minimalist 30-line autonomous coding agent that functions as a zero-config CLI tool for bug fixes and refactoring. Built as a single JavaScript file with no dependencies beyond Node builtins, it operates as a simple loop: call an LLM, check for tool usage, execute tools, and feed results back. It supports any OpenAI-compatible API including local models, and comes with two built-in tools (bash for full system access and skills for markdown playbooks). The Product Hunt launch introduces a --sandbox mode that runs the agent in a container for safety.
Key quotes
· 5 pulledmi was born as a curiosity piece. how small can an agentic harness be and remain useful? turns out, very small.
Claude Code is ~500k lines of code, OpenCode is ~100k, mi is 30 lines, yet, it has all the features expected from agentic harness at this stage and then some.
mi is a loop, two tools, and an LLM that you plug in.
mi is optimised for running with local LLMs, it's concise and to the point.
this launch on Product Hunt is paired with launch of --sandbox mode, mi will run itself in a container, away from your host and harming you with dow
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