It’s a little bit Swiss Army knife and a little bit skynet:
https://github.com/ferrislucas/promptr
From the README: Promptr is a CLI tool for operating on your codebase using GPT. Promptr dynamically includes one or more files into your GPT prompts, and it can optionally parse and apply the changes that GPT suggests to your codebase. Several prompt templates are included for various purposes, and users can create their own templates.