MountWindows | macOS | Linux
Access nuFS as a local filesystem. Open and edit files with your existing applications, shell tools and coding agents. File content is fetched on demand.
- On-demand reads
- Versioned files
The filesystemfor humans and AI.
Access files on demand across apps and AI agents, without downloading or storing them locally.
Access
Access nuFS from your tools.
Mount a drive or use the terminal. AI agents can also work directly with your files using their existing tools. Every interface works with the same files, version history and access permissions.
Official SDKs
Work with files, version history and access controls through typed clients in your application.
- Python
- TypeScript
- Go
- Rust
Command line
Read, write, search and restore files from the terminal or an automation script.
REST API
Read byte ranges, make partial edits and manage versioned files over HTTP.
S3-compatible access
Use existing S3 clients for supported listing, upload and download operations.
Version history
An edit should not erase what came before.
Turn on file history when you want to keep earlier versions. Compare a revised document with its original. Retrieve the dataset used for an earlier run. Restore a file after an unwanted change. Retained versions remain readable even as work continues.
project-notes.mdv1File created
v2Notes added
v3Content revised
v4Section removed
v5 · currentv1 contents restored
Read v1
Restore v1
Read an earlier version.
Each committed file version has its own identity. Read or download its retained bytes even after the current file changes. Clear history whenever you need to free storage.
Update the version you reviewed.
Guard a write with its expected version. If another client has committed a change, the stale update is rejected so you can inspect the new state.
Restore without rewriting history.
Restoring old contents creates a new current version. Access permissions and retention still govern historical reads.
Storage behavior
Work with large files on demand.
Keep your project's footage and audio on nuFS, and work from the mounted drive in your editing software. Your files are available without downloading the whole project first.
Stored on nuFSscene-01.mp4
Being readComplete file retained
Open files from your mounted drive.
Open scene-01.mp4 in your editing software just as you would a local file. nuFS supplies the file content as the software reads it.
File content arrives as it's needed.
nuFS responds to your editing software's requests in the background. The highlighted area shows the part being read, while the complete file stays stored in nufs.
Persistence
Files persist beyond the session.
Files saved to nuFS remain available after you close your terminal, end an agent session or restart a client. Return to the same drive later, or open its files from another authorized tool.
Earlier session
Save your work
Write notes and results, then finish your task.
Save confirmedresearch/notes.mdSavedresults.csvSavedStored on nuFS
Later session
Resume from your files
Open the same saved files and continue with your own tools.
Same driveBefore ending your session, wait for the save to be confirmed. Edits still waiting to upload are not yet saved to nufs.
Collaboration
A shared drive for your team.
Keep your team's files together in a shared drive. Invite people to work on the same files, and manage their access for that drive.
Project files
project-notes.md assets/
People in this drive
Maya
Alex
Sam
Keep projects organized.
Keep project files together in a drive. Create another drive for a different team or project.
Work on the same files.
Invite teammates to your drive. Everyone works with the shared project files through their own account and tools.
Share a file outside your team.
Send a file link or request an upload when someone only needs to send or receive files, without adding them to the drive.
Questions
Read the documentation Common questions, answered.
Using nuFS
What is nuFS?
nuFS is a persistent, versioned filesystem. People can use a mounted drive; applications and agents can access the same files through the CLI, REST API, official SDKs and supported S3 operations.
How do my agents use it?
Give your agent a mounted directory or a scoped nuFS credential. It can read and write using its existing filesystem tools, the CLI or an SDK. Your agent supplies the model and interpretation; nuFS supplies authorized, persistent files.
Which platforms are available?
The Linux and Windows desktop apps include the command line and mounted drive. Python, TypeScript, Go and Rust SDKs and the REST and S3-compatible APIs provide access from code. See Downloads for platform availability.
Is the S3 interface limited to AWS?
No. You can use S3-compatible tools with nuFS, without an AWS account. See the S3 documentation for supported operations and connection examples.
How is nuFS different from a sync folder or an object bucket?
A sync folder usually centers on copies on individual machines. An object API usually centers on replacing whole objects. nuFS provides a mounted filesystem plus file APIs, selected-byte edits, immutable versions over the same stored files. Its S3 interface supports documented object operations; the SDKs expose the richer file operations.
Will my existing applications work?
Mount a drive to open and edit files using your existing applications. Compatibility depends on the filesystem features an application needs; installing and running applications from the drive is not currently supported.
Are the SDKs ready to use?
Python, TypeScript, Go and Rust SDKs expose files, versioned mutations, history, drive plans and access controls. The documentation includes installation steps, examples and a method reference for each language.
Files and sharing
Does nuFS keep every file on my machine?
File content can be retrieved on demand and retained in a bounded local cache. A range read can request part of a file. An application that reads an entire file will still transfer that file.
What happens when two tools change a file?
API and SDK mutations can require an expected version. If another change has committed, a stale guarded update is rejected. The application can then inspect the newer version and decide how to proceed.
Can I restore an earlier version?
Yes. Retained committed versions can be read or downloaded. Restoration creates a new current version; it does not rewrite the earlier version. Access permissions and retention still apply.
Can I have my own drive and join someone else’s?
Yes. A plan provides your own drive. You can also accept invitations to shared drives without buying a plan. Each drive’s owner manages its storage and seats; ownership stays with that account.
Can I share a file without sharing my whole drive?
Yes. An expiring, revocable public link grants access to a particular saved file version. Upload requests let recipients send new files into one destination without browsing the drive.
What happens when a transfer is interrupted?
The desktop app keeps pending changes locally so they can resume after a restart. A file is saved to nuFS once its upload is confirmed. You can follow pending saves in the transfer panel.
Do I need an internet connection?
You need a connection to load uncached files and save changes to nufs. Downloaded data can remain in the local cache, and pending edits are kept locally until they finish uploading.
Where are my files stored?
Your saved files are stored on nuFS, independently of your device. The desktop app keeps a local cache of downloaded data, which you can clear in Settings without deleting your cloud files.