Open-source Claude Code and Codex plugin that has your coding agent read a codebase (one repo or several) and draw a local, interactive, plain-English map of its parts, files, endpoints, screens and outside services, with an Ask bar, recent-change highlights and a security-focused Health check.
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Zoomable map from whole app down to files and endpoints
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Matches frontend web requests to server endpoints, even across repos
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Ask the map: answers with a mini-map and step-by-step walkthrough
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Recent work view highlights what the agent just changed and why
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Health check for leaked keys, open Supabase/Firebase rules, fakeable Stripe webhooks and unauthenticated endpoints
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Blueprints that plan an unbuilt app from a PRD or spec
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Runs locally with zero dependencies; exports a single HTML file
Free
Free and open-source (MIT). Runs on your existing Claude Code or Codex plan with no API keys and no paid tier.
Best for
Builders and teams using Claude Code or Codex who want a plain-English architecture map of an AI-built app, faster onboarding, and a quick check for common security mistakes.
Not ideal for
Developers who need function-level knowledge graphs of very large codebases, formal security audits, or support for agents other than Claude Code and Codex.
A fast-moving, privacy-friendly way to see how an agent-built app fits together; its Health check is a useful first pass, not an audit, and it is limited to Claude Code and Codex for now.
v0.6.3 (Nov 2, 2026) added route-table endpoints, full Fastify and Django endpoint prefixes and a parsing fix; v0.6.0-0.6.2 added AI-app Health checks and far fewer false alarms with a Not a problem button.
As of
Is Floorplan free?+
Yes - Floorplan is Free. Free and open-source (MIT). Runs on your existing Claude Code or Codex plan with no API keys and no paid tier.
Is Floorplan open source?+
Yes - Floorplan is open source. Free and open-source (MIT). Runs on your existing Claude Code or Codex plan with no API keys and no paid tier.
Who is Floorplan best for?+
Builders and teams using Claude Code or Codex who want a plain-English architecture map of an AI-built app, faster onboarding, and a quick check for common security mistakes.
Who is Floorplan not ideal for?+
Developers who need function-level knowledge graphs of very large codebases, formal security audits, or support for agents other than Claude Code and Codex.
What are the best Floorplan alternatives?+
The closest Floorplan alternatives on ai.dosa.dev are Greptile, Fern, Remio - all listed under AI Codebase Knowledge & Generation.
Who makes Floorplan?+
Floorplan is developed by Hayden Smith. It is listed in the AI Codebase Knowledge & Generation category on ai.dosa.dev.
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