[FEATURE] Headless Install w/API Key

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

We are trying to integrate Claude Code on our build agents in Azure Devops/TFS. There doesn't appear to be a way to run Claude for the first time without being prompted for an OAuth login (interactive). Not sure if this is a bug or a feature. Based on my searches it used to be supported, per #11631. This is really cramping our ability to run automated PR code reviews!

Proposed Solution

Allow us to pass an API key to the install, on the command line, in settings file, etc., and have Claude not prompt us for initial login in that scenario.

Alternative Solutions

_No response_

Priority

High - Significant impact on productivity

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_