Syncing Files To and From a Sandbox

Move code, data, and artifacts between your local machine and a NemoClaw sandbox using nemoclaw sandbox sync.

Push local files into a sandbox

Upload your current project directory into /sandbox on the sandbox:

nemoclaw sandbox sync my-sandbox --up .

Push a specific directory to a custom destination:

nemoclaw sandbox sync my-sandbox --up ./src /sandbox/src

Push a single file:

nemoclaw sandbox sync my-sandbox --up ./config.yaml /sandbox/config.yaml

Pull files from a sandbox

Download sandbox output to your local machine:

nemoclaw sandbox sync my-sandbox --down /sandbox/output ./output

Pull results to the current directory:

nemoclaw sandbox sync my-sandbox --down /sandbox/results

Sync on create

Push all git-tracked files into a new sandbox automatically:

nemoclaw sandbox create --sync -- python main.py

This collects tracked and untracked (non-ignored) files via git ls-files and streams them into /sandbox before the command runs.

Workflow: iterate on code in a sandbox

# Create a sandbox and sync your repo
nemoclaw sandbox create --name dev --sync --keep

# Make local changes, then push them
nemoclaw sandbox sync dev --up ./src /sandbox/src

# Run tests inside the sandbox
nemoclaw sandbox connect dev
# (inside sandbox) pytest

# Pull test artifacts back
nemoclaw sandbox sync dev --down /sandbox/coverage ./coverage

How it works

File sync uses tar-over-SSH. The CLI streams a tar archive through the existing SSH proxy tunnel -- no rsync or other external tools required on your machine. The sandbox base image provides GNU tar for extraction.

Push: tar::Builder (Rust) -> stdin | ssh <proxy> sandbox "tar xf - -C <dest>"
Pull: ssh <proxy> sandbox "tar cf - -C <dir> <path>" | stdout -> tar::Archive (Rust)

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