claude-code - 💡(How to fix) Fix Context compression orphans advisor_tool_result blocks, causing unrecoverable 400 errors [1 comments, 2 participants]

API Error: 400 {"type":"error","error":{"type":"invalid_request_error", "message":"messages.7.content.0: unexpected tool_use_id found in advisor_tool_result blocks: srvtoolu_011cbRG78Yy2sdVA3xAWNF4u. Each advisor_tool_result block must have a corresponding server_tool_use block before it."}}

TL;DR

Modify the context compression logic to treat server_tool_use and advisor_tool_result blocks as an atomic pair, ensuring both are kept or dropped together.

Guidance

• Review the context compression algorithm to identify why server_tool_use blocks are being removed while corresponding advisor_tool_result blocks are retained.
• Verify that the compression logic correctly handles the atomic pair requirement for these blocks.
• Consider implementing a check to ensure that every advisor_tool_result block has a preceding server_tool_use block before allowing the session to proceed.
• Investigate the session data for 0165UkzS53TbA6tF7nsyqu2h to understand the specific circumstances leading to this issue.

Example

No code snippet can be provided without more information on the implementation details of the context compression logic.

Notes

The provided information suggests that the issue is related to the context compression algorithm, but the exact implementation details are not available. Therefore, the suggested fix is high-level and may require further investigation to implement correctly.

Recommendation

Apply a workaround by modifying the context compression logic to treat server_tool_use and advisor_tool_result blocks as an atomic pair, as this is the most direct way to address the issue and prevent session failures.