[BUG] API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"tools.135.custom.name: String should have at most 64 characters"}}

Environment

• Platform (select one):
• [x ] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.31
• Operating System: MacOS Sequoia 15.5
• Terminal: iterm2

Bug Description

I just updated the to the latest plugin in Pycharm for Claude Code this AM.

API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"tools.135.custom.name: String should have at most 64 characters"}}

The tool number returned changes each time this error is thrown....

Steps to Reproduce

1. Load Claude Code
2. Type any command

Expected Behavior

No errors.

Actual Behavior

API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"tools.135.custom.name: String should have at most 64 characters"}}

Additional Context

This effectively renders claude code unusable.