claude-code - 💡(How to fix) Fix [BUG] Auto-compact fails when 200K standard context is exhausted — compaction API requires extended context [1 comments, 2 participants]

Error: Error during compaction: API Error: Extra usage is required for 1M context

Error Messages/Logs

TL;DR

The auto-compact feature fails to trigger before the 200K context window is fully exhausted, requiring manual model switching to 1M for successful compaction.

Guidance

• The issue seems to be related to the missing context_window data in PostToolUse hook payloads, which might prevent auto-compact from detecting the threshold.
• Verify that the context_window data is being sent correctly to the statusline, but not to the hooks, by checking the payload contents.
• Investigate the related issues (#23432, #25695, #29330, #34296) to see if they provide any insights into the problem or potential solutions.
• Consider modifying the auto-compact logic to use an alternative method for detecting the context window threshold, if the hook payload issue cannot be resolved.

Example

No code example is provided due to the lack of specific implementation details in the issue.

Notes

The issue is reported as a regression, indicating that it worked in a previous version, but the last working version is not specified. This information might be crucial in identifying the root cause.

Recommendation

Apply workaround: manually switch to a 1M model before compaction, as described in the steps to reproduce, until a proper fix is available. This is because the current auto-compact feature is not functioning as expected, and manual intervention is required to successfully compact the context window.