[BUG] Facing 400 Bad request few times

Resolved 💬 2 comments Opened Nov 29, 2025 by MananDesai54 Closed Nov 29, 2025

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?

API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.10.content.1: unexpected
tool_use_id found in tool_result blocks: toolu_01LoTJ1T77p1AVjPqt27jQXh. Each tool_result block must have a
corresponding tool_use block in the previous message."},"request_id":"req_011CVcYoidj2yxDMq8pVd4kn"}

What Should Happen?

Claude should work without errors

Error Messages/Logs

Steps to Reproduce

start Claude and ask anything which need to read and write files

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.0.55

Platform

Anthropic API

Operating System

Other Linux

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_

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