What it does
Floorplan is a plugin for the AI coding tools Claude Code and Codex. The AI reads your project's code and draws a map you can click through. Every part, file and web request gets a plain-English name, and the connections between them are shown.
You can zoom from the whole app down to a single file, start from a screen you know, or ask the map questions like how a refund works. A health check looks for common mistakes, such as secret keys left in the code or pages anyone can reach without signing in. A 'Recent work' view highlights what the AI just changed and why.
It can also turn a plan or product document into a 'blueprint' map of an app you haven't built yet. Its makers say everything runs on your own computer and nothing is added to your code history.
Who it's for
People who build apps with AI help and want to understand how their app fits together without reading the code. Also useful for teams bringing new people up to speed.
Can I use it without coding?
With some setup. You need Node.js and Claude Code or Codex, then install the plugin with a few clicks in the Codex app or two commands. New to this? Start here.
Can I run it?
- Cost
- Free, but needs an AI accountThe software is free, but it uses an online AI service (like OpenAI or Anthropic), which usually charges for use.
- Runs on
- Mac, Windows, Linux
- Computer
- An ordinary computer is fine
- Privacy
- Your choice: run it on your device or use an online service
- API key
- Not needed
Try it
- Install Node.js and either Claude Code or Codex.
- Add the Floorplan marketplace and install the Floorplan plugin (in the Codex app, use Plugins and Add a marketplace).
- Open your project and ask: "Make me a floorplan of this app."
Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?
Before you install
- Only download from the official GitHub page. Copies with similar names exist for many popular projects.
- Plain-AyI is an independent guide and doesn't host or review the software it lists. Please check each project's official page before installing.
- License (MIT): Very permissive: free to use, change and share, including for business.
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