Floorplan

See how your app actually fits together.

Claude or Codex reads your codebase and draws an interactive map of it. Every part, file and web request gets a plain-English name, and every connection between them is shown.

Try the live demo · Watch the video · Install · Quick start · Compared · Features · See it in action · How it works · Docs · FAQ

Why Floorplan?

You built an app, probably with a lot of help from AI, and it works. But ask "what happens when someone checks out?" or "what breaks if I change this?" and the honest answer is no idea.

Floorplan gives you the diagram nobody drew. Ask Claude Code or Codex for a floorplan and a few minutes later you have a map you can explore, ask questions on, and keep up to date as you work.

• For builders: understand the app you made, in your own words, without reading the code.
• For teams: onboard someone in minutes, from the big picture down to the exact file.
• For working with AI: after every change Claude or Codex makes, see exactly which parts it touched and why.

Floorplan, Archify or Understand Anything?

All three turn code into something you can see, and all three are worth knowing. They answer different questions:

	Floorplan	Archify	Understand Anything
The question it answers	How does the app I built actually work, and what should I worry about?	How do I show this clearly?	How does this big codebase work, down to the functions?
Made for	People who build with AI and don't read the code	Anyone explaining a system, a process or an idea	Developers getting to know a large codebase
What you get	A zoomable map of your whole app: parts, files and endpoints, the screens, the requests between frontend and backend (even across repos), and outside services	A polished diagram in one of 10 types (architecture, sequence, ERD…) or a one-page explainer, from a repo or just a description	A knowledge graph of every file, function and class, with layers, a business-domain view and guided tours
Only here	Health check (keys in code, open Supabase tables and Firebase rules, fakeable Stripe webhooks, endpoints anyone can use), Recent work (what your AI just changed, and why), blueprints from a PRD	10 diagram types, image and video exports, diagrams of things that aren't code	Diff impact, a dashboard that adapts to your role, knowledge-base graphs
Runs in	Claude Code, Codex	Claude Code, Codex, Cursor, OpenCode and more	Claude Code, Codex, Cursor, Copilot, Gemini CLI and more

Pick Floorplan to understand and check an app you own. Pick Archify to draw a diagram for a doc, a talk or a decision. Pick Understand Anything to study a large codebase function by function.

They also work together: map your app with Floorplan, then use Archify to draw one flow for a presentation.

Features

🗺️ A map at every zoom Start with the whole app, then double-click into a part, a group of files, a file, and its endpoints. Each view shows what it's used by and what it uses.

💬 Plain English everywhere "Takes card payments at checkout", not "Stripe API wrapper". Technical terms are explained on hover, and one switch shows the developer view.

🔌 Real connections, across repos It follows imports, and matches each web request in your frontend to the server endpoint that answers it, even across separate repos.

🖥️ Start from a screen Pick a page you know and see everything behind it: its parts, the requests it makes, the server code, the data, and outside services.

🧭 Ask the map "How does a refund reach the customer's card?" comes back as an answer plus a mini-map of just the pieces involved, with a step-by-step walkthrough.

🩺 Health check Catches the classic mistakes in AI-built apps: keys in the code or sent to the browser, Supabase tables anyone can read, open Firebase rules, Stripe webhooks anyone could fake, and endpoints with no sign-in. Each comes with a ready-to-paste fix. A check, not an audit.

🟢 Recent work The cards your AI just changed light up green, each with a note on how the change serves what you asked for.

⚡ Stays current, stays yours Updates re-read only what changed, and an open map reloads itself. Everything runs on your machine, and nothing is committed to git.

Plus guided flows you can request in plain words, a one-minute Start here tour, Export to send a copy to anyone as one HTML file, a layout for phones and tablets with drag and pinch, search, keyboard shortcuts, and right-click actions on every card.

This is the beginning of the README. Read the rest at the original. Read the full README ↗