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Vercel Sandbox Adds FUSE-Based File System Support

·2026.07.03 10:00

Key point

Vercel Sandbox now supports FUSE, allowing remote storage like S3 to be mounted as if it were a local path.

Details

Vercel Sandbox has started supporting FUSE (Filesystem in Userspace). Now developers can directly mount remote storage or custom file systems inside a running Sandbox and use them just like ordinary paths.

This enables the following kinds of work:

  • Processing large datasets by directly streaming object storage such as S3 buckets
  • Sharing state between Sandboxes through a common file system
  • Running tools that use POSIX paths against remote sources without copying data into the Sandbox

For example, you can install Mountpoint for Amazon S3 to mount an S3 bucket to a specific directory, and then immediately check the files in the bucket with the ls command.

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