Show HN: I built an AI that turns GitHub codebases into easy tutorials

I had not used gemini before, so spent a fair bit of time yak shaving to get access to the right APIs and set up my Google project. (I have an OpenAPI key but it wasn't clear how to use that service.)

I changed it to use this line:

   api_key=os.getenv("GEMINI_API_KEY", "your-api_key")

instead of the default project/location option.

and I changed it to use a different model:

    model = os.getenv("GEMINI_MODEL", "gemini-2.5-pro-preview-03-25")

I used the preview model because I got rate limited and the error message suggested it.

I used this on a few projects from my employer:

- https://github.com/prime-framework/prime-mvc a largish open source MVC java framework my company uses. I'm not overly familiar with this, though I've read a lot of code written in this framework.

- https://github.com/FusionAuth/fusionauth-quickstart-ruby-on-... a smaller example application I reviewed and am quite familiar with.

- https://github.com/fusionauth/fusionauth-jwt a JWT java library that I've used but not contributed to.

Overall thoughts:

Lots of exclamation points.

Thorough overview, including of some things that were not application specific (rails routing).

Great analogies. Seems to lean on them pretty heavily.

Didn't see any inaccuracies in the tutorials I reviewed.

Pretty amazing overall!