Unclear It is not clear what part of Claude Code reads this variable.
What
CCR_AGENT_PROXY_TOKEN_FILE_DESCRIPTOR joins the environment variables Claude Code reads credentials from through a file descriptor, which is a numbered handle to an open file or pipe passed in by another program. It sits alongside the existing ones for the gateway, the API key and websocket connections.
Why
This is part of how remote sessions hand Claude Code its credentials, and most people will never set it.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
It is not clear what part of Claude Code reads this variable.