> ## Documentation Index
> Fetch the complete documentation index at: https://docs.declaw.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Create Volume

> Upload a tar.gz and register it as a copy-mode volume.

Uploads a gzip-compressed tar archive to object storage and registers it in the volume catalog. Attach the returned `volume_id` to sandboxes with `mode: copy` (the default) and Declaw hydrates the archive under the mount path at boot. The body streams end-to-end (up to 4 GiB).