[BUG] API ERROR: Rate Limit Reached with 0% of my session or weekly usage even touched.

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?

I have 1-2% of my weekly and current session usage. I have in fact never gone over usage. Yet, while having extra usage on because Claude gave me a $50 credit a few weeks ago, it ate up all of my credit AND overcharged despite having a $50 limit set. It went to $51.66 and it fully blocked me from using any of MY ALREADY PAID FOR PLAN until i paid off that $1.66. So, I added $5. Within an hour of very light prompting, my usage went to 4% and an additional $1.81 was taken from my extra usage despite having 95% of my current session and weekly usage still available. Additionally, it would not function until i set my ceiling of spending to $55.

So to be concise. Claude code charged extra usage while not going above my normal plan usage bounds. Claude code exceeded the ceiling I set by $1.66. Claude code rate limited me until A) I paid the $1.66 off and B) I raised my ceiling to $55 of extra usage. Claude code continued to charge an additional $1.81 of extra usage TODAY while barely using 2-3% of my plan.

For context, I am on the 20xMax $200/mo plan.

What Should Happen?

I should never ever be charged until 100% of my usage, but am being charged extra regardless and my usage was being restricted from me until i covered the debt despite me having set a hard limit

Error Messages/Logs

Just an API Rate Limit Error

Steps to Reproduce

Simply using it. Again, I have 95%+ available usage, but am being overcharged beyond my limit

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.86

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_