claudeFS
A free browser extension that lets Claude read, search, and edit files in a folder on your own computer, directly from a normal claude.ai chat — without any file ever leaving your browser.
🔗 Visit claudeFS
Description
Working with Claude on a real coding or writing project usually means copy-pasting file contents back and forth by hand, which gets tedious fast once more than a couple of files are involved. claudeFS removes that copy-paste loop by letting you authorize a local folder once, after which Claude can read, search, and edit those files directly inside the normal claude.ai web chat — no desktop app, no CLI, no API key beyond what you already use.
claudeFS is a free, open-source (MIT) browser extension built on Manifest V3 for Chrome and Edge, using the browser's native File System Access API so all file operations run locally rather than through any external server — the extension explicitly sends nothing to outside servers, and only stores a reference to the authorized folder in the browser's IndexedDB. Every write goes through a diff confirmation dialog first, so nothing gets changed without an explicit approval step. It's available on the Microsoft Edge Add-ons store, with Chrome installation currently via developer mode pending Web Store approval, and works on Claude's free plan. It's an independent project, not affiliated with or endorsed by Anthropic.
💬 Our review
The short version: if you're already using claude.ai in the browser and manually pasting files into the chat, claudeFS removes that entire step for free, with a sensible security model (local-only, diff confirmation before every write) — but it's a very early, unofficial project, so back up anything important before letting it touch your files.
The architecture is the right one for this kind of tool: using the File System Access API keeps everything local, the diff-confirmation step before writes is a meaningful safety net against Claude making an unwanted change, and being free and open-source means the code is inspectable rather than a black box asking for folder access. The honest caveats are its youth — 13 commits, 0 forks, 0 pull requests at the time of writing — and its distribution status, with Chrome still requiring developer-mode installation while Web Store approval is pending, which is a real friction point for anyone not comfortable enabling that setting. Compared to using Claude Code or an IDE-integrated coding agent, claudeFS is a much lighter-weight option for someone who just wants file access inside the familiar claude.ai chat interface, not a replacement for a full agentic coding environment.
💰 Pricing
📊 Global score
🤖 AI-enriched data
Projet open-source gratuit sous licence MIT, fonctionne avec le plan gratuit de claude.ai.
Pros
Gratuit et open-source, licence MIT
Toutes les opérations fichiers restent locales, rien n'est envoyé à un serveur externe
Boîte de dialogue de confirmation par diff avant chaque écriture
Fonctionne avec le plan gratuit de claude.ai, aucune installation lourde
Cons
Projet très jeune (13 commits, 0 fork, 0 pull request)
Installation Chrome via mode développeur en attendant l'approbation du Web Store
Non affilié à Anthropic — support et pérennité dépendent d'un contributeur indépendant