Creates an isolated sandbox environment (Docker container). The sandbox starts empty — specify ALL needed packages in dependencies. For data analysis, always include pandas and numpy.

Executes code in the sandbox. State persists across calls (like Jupyter cells).

Runs a shell command inside the sandbox. Useful for listing files, installing Linux dependencies, etc.

Registers files for download and cross-session import (no host copy). Files become available via the API download endpoint and for import_files in other sessions. Result includes download_url for each file (API must be running).

Imports files into the sandbox from host or from another session. Each entry can be: Host path: "source" (host path), optional "destination"; Cross-session: "session_id" (source session), "path" (container path), optional "destination" — file must have been exported from that session.

Stops and removes the sandbox completely. Use when done with a session.