When you jump into a codebase you've never seen before, you spend the first few hours just trying to figure out what everything is. Which file does what. How the pieces connect. Where the data actually flows.
I got tired of that, so I built Floorplan — a free plugin for Claude Code and Codex that reads your codebase and generates an interactive, plain-English map showing how your app actually fits together.
What it does
Floorplan maps:
- Files and their roles
- Web requests and routes
- Connections between components
- Key logic and entry points
The result is a visual overview you can read in minutes, not hours.
Why I built it
Every time I picked up a new project, I'd spend way too long just getting oriented. Reading file by file. Tracing function calls manually. I wanted something that could just tell me "here's how this app works" in plain English.
Floorplan solves exactly that.
Zero friction to use
- No config or setup
- Zero dependencies
- Runs locally on your machine
- MIT licensed
- Node.js 18+
Nothing to install beyond the plugin itself. No accounts. No paid tiers. No analytics.
Get it
GitHub: https://github.com/haydenschmitty/floorplan
Would love to hear what you think. If you try it on your own codebase, let me know how it goes in the comments.
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