protondrive does not talk to the Proton Drive API directly. Encryption,
sessions, caching, and API traffic are all handled by the official Proton
Drive command-line interface (proton-drive), which is built on the
Proton Drive SDK. These functions
report which executable protondrive will use and which version it is.
The executable is found by checking, in order:
The
protondrive.cli_pathoption.The
PROTONDRIVE_CLI_PATHenvironment variable.proton-driveon thePATH.
Download the CLI from https://proton.me/download/drive/cli/index.html.