# Autolith

14 Hacker News commenters recommended Autolith and 0 criticized it, November 2025 to November 2026. It was recommended in 3 of 13 months.

**Verdict:** A free coding agent built in Common Lisp that runs inside a live Lisp image, letting the agent inspect and modify running code and its own source.

## Why people recommend it

- Agent works inside a live Lisp image (2 comments): "The benefit of having the agent directly in the image like with Autolith here is that it can directly inspect all defined symbols" ([source](https://news.ycombinator.com/item?id=49396350)) "I've had success loading Lisp programs into Autolith and letting it poke at them from the inside" ([source](https://news.ycombinator.com/item?id=49409967))
- Agent can read and update its own code (2 comments): "I've observed it modify itself to disassemble binaries in search of answers" ([source](https://news.ycombinator.com/item?id=49934573)) "autolith is very capable at reading and updating it's own code" ([source](https://news.ycombinator.com/item?id=49405104))
- Written in Common Lisp, suits LLMs (2 comments): "Autolith is great with LLMs exactly because it's written in Common Lisp" ([source](https://news.ycombinator.com/item?id=49974901)) "here's an interesting tool to use CL with LLMs" ([source](https://news.ycombinator.com/item?id=49280515))
- Lisp environment is enjoyable to use (3 comments): "The freedom of having a lisp machine is, to me, much more enjoyable than trying to maintain Typescript" ([source](https://news.ycombinator.com/item?id=49926397)) "I made Autolith in Common Lisp because I like Lisp" ([source](https://news.ycombinator.com/item?id=49397830)) "This is cool. Love that you used lisp here." ([source](https://news.ycombinator.com/item?id=49412178))

## Alternatives hackers recommend

- [GitHub Copilot](https://hackerapproved.com/p/github-copilot.md): 571 recommend
- [oh-my-pi](https://hackerapproved.com/p/oh-my-pi.md): 104 recommend
- [Grok Build CLI](https://hackerapproved.com/p/grok-build.md): 66 recommend
- [DeepSeek Harness](https://hackerapproved.com/p/deepseek-harness.md): 63 recommend
- [Claude Code VS Code extension](https://hackerapproved.com/p/claude-code-vs-code-extension.md): 31 recommend

## Cite as

Hacker Approved, "Autolith", https://hackerapproved.com/p/autolith/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).