invalid_request_error

Resolved 💬 3 comments Opened Feb 6, 2026 by JacquesGariepy Closed Feb 10, 2026

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.1.content.2.tool_use.name: String should have at most 200 characters"},"request_id":"req_011CXrsf7Xaj8Fd4yjDJzLbX"}

What Should Happen?

API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.1.content.2.tool_use.name: String should have at most 200 characters"},"request_id":"req_011CXrsf7Xaj8Fd4yjDJzLbX"}

Error Messages/Logs

API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.1.content.2.tool_use.name: String should have at most 200  characters"},"request_id":"req_011CXrsf7Xaj8Fd4yjDJzLbX"}

Steps to Reproduce

API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.1.content.2.tool_use.name: String should have at most 200 characters"},"request_id":"req_011CXrsf7Xaj8Fd4yjDJzLbX"}

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.34

Platform

Other

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_

View original on GitHub ↗

This issue has 3 comments on GitHub. Read the full discussion on GitHub ↗