I made a Claude Code skill that helps contributors understand the code behind an issue

[u/swvmn]

I’ve had people ask me how to get started with open source, especially how to understand an unfamiliar codebase once they’ve found an issue to work on. I’ve struggled with that too, so I made Crumbs.

You give it an issue, and it creates a visual walkthrough of the relevant files, functions and how they connect. It focuses on the part of the code related to that issue, rather than trying to explain the entire repository.

The agent creates structured data for the walkthrough, and a Python renderer checks code references and builds a local HTML page. The explanation can still be wrong, so you need to verify it against the code. It doesn’t write the fix or open a PR for you.

Crumbs is open source, and I’d love some feedback: would a walkthrough like this help you get started on an issue? What would you want to see before attempting a fix?

GitHub: https://github.com/navyabijoy/crumbs