[BUG] Agent/subagent initialization fails multiple times in all sessions until a 5-minutes API timeout fixes it

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Regardless of my prompts, all of my sessions spend >50% of their total time stuck due to failed agent/subagent initializations that only get retried after an internal API timeout of ~5 minutes is reached. I have confirmed this hypothesis as per the attached debug mode screenshots. My fiber internet connection is extremely reliable and I only face this issue on CC + Claude Max plan.

What Should Happen?

API requests made by CC shouldn’t wait more than ~15-30 seconds for a response and agent initialization should never take more time than that. The current 5 minutes timeout destroys the reliability and overall session performance of the tool.

Error Messages/Logs

Steps to Reproduce

Execute any prompts that involve a few subagents. Literally all of sessions and prompts trigger this behavior all day long.

Claude Model

Opus

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.29

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

Other

Additional Information

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