[BUG] tools.43.custom.name: String should have at most 64 characters

Environment

• Platform (select one):
• [ ] Anthropic API
• [x] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.67
• Operating System: Ubuntu 24.04
• Terminal: VS code remoteSSH

Bug Description

When I use the claude code, I meet the API 400 error

API Error: 400 {"error":{"message":"{\"message\":\"tools.43.custom.name: String should have at most 64 characters\"}","type":"None","param":"None","code":"400"}}

Could you help me explain the root cause?

Steps to Reproduce

I use the custom slash command, then the error happen.

Expected Behavior

no error happen.

Actual Behavior

API Error: 400 {"error":{"message":"{\"message\":\"tools.43.custom.name: String should have at most 64 characters\"}","type":"None","param":"None","code":"400"}}

Additional Context

NA