OpenAI's open-source Codex terminal coding agent has accumulated 85,000 stars on GitHub
Users can direct Codex to analyze its own repository.
Codex is Open Source and you can learn a great deal about it just by pointing your codex to it
ask it how a feature X works, ask it how you can efficiently optimise your current setup
and perhaps my fav is seeing how team members building codex use codex

Check it out yourself:
Codex is Open Source and you can learn a great deal about it just by pointing your codex to it ask it how a feature X works, ask it how you can efficiently optimise your current setup and perhaps my fav is seeing how team members building codex use codex