[Bug] Anthropic API Error: Missing Tool Result Block

Resolved 💬 1 comment Opened Aug 24, 2025 by JustOneGuy Closed Sep 18, 2025

could only submit the issue after complete restart of claude with /exit , a /clear command itself doesn't fix any.

Bug Description
⎿ API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.86: tool_use ids were found without tool_result blocks immediately after: toolu_01BkxAkJgNnBSmhKuConE3Pb.
Each tool_use block must have a corresponding tool_result block in the next message."},"request_id":"req_011CSS7ou1Sw1y8ksQitZg6w"}

Environment Info

  • Platform: darwin
  • Terminal: Apple_Terminal
  • Version: 1.0.89
  • Feedback ID: 96b69cfe-f345-4434-a34d-858ad080ea1f

Errors

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