I recently found llm-buddy (https://github.com/ahyatt/llm-buddy) which might be a good fit.

Llm-buddy is an “Emacs package that watches your recent buffer edits and asks an LLM to review them. When it finds something worth pointing out, it can add a short inline note in the relevant buffer or show a message in a popup buffer (it usually does the former).

The goal is lightweight feedback while you work: typos, logic mistakes, questionable edits, or prose issues that a normal compiler, linter, or spell checker may not catch.”