Imagine you hired a new developer. They're talented, but they've never seen your codebase before — so they start making changes that accidentally break other things. That's roughly the problem with AI coding assistants today. They're smart, but often blind to how everything connects.
GitNexus fixes that. You drop in your project — either a GitHub link or a ZIP file — and it builds a kind of family tree of your code: what calls what, what depends on what, what's probably dead weight nobody uses anymore. All of it happens inside your browser tab. Nothing gets uploaded to any server. Your code stays yours.
The genuinely surprising part: this tool then talks directly to AI assistants like Claude Code or Cursor, handing them that map before they touch anything. The AI goes from guessing at structure to actually knowing it. Fewer broken things. More useful edits.
And because it runs entirely in your browser — no servers, no infrastructure — the person who built it can offer it completely free.
You can try it at https://gitnexus.vercel.app
Repository (repo): A folder, usually stored on GitHub, containing all the files for a software project. Think of it as the master copy.
Knowledge graph: A map of how things relate to each other — not just a list, but a web of connections. Your contact book is a list; a family tree is a graph.
MCP (Model Context Protocol): A way for AI assistants to receive extra information before answering — like handing someone a briefing document before a meeting.
WebAssembly: A way to run complex software directly inside a web browser, without needing a separate server. It's why GitNexus can do heavy work locally and for free.
If you work with a dev team, it's worth asking them whether their AI tools have any real understanding of the project — or whether they're essentially making educated guesses.