[BUG] API Error: invalid_request_error: tools.71.custom.name

Environment

• Platform (select one):
• [ ] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [x] Other: <!-- specify -->
• Claude CLI version: 1.0.6 (Claude Code)
• Operating System: MacOS 15.4.1 (24E263)
• Terminal: Terminal App, Windsurf Terminal

Bug Description

Updated to 1.0.6 and now all requests return this error (even after restart and reinstall):

API Error: 400 
    {"type":"error","error":{"type":"invalid_request_error","message":"tools.82.custom.name: String 
    should match pattern '^[a-zA-Z0-9_-]{1,64}$'"}}

Steps to Reproduce

1. Update to Claude Code 1.0.6
2. Make any request

Expected Behavior

Valid response not an error

Actual Behavior

Error: {"type":"error","error":{"type":"invalid_request_error","message":"tools.82.custom.name: String should match pattern '^[a-zA-Z0-9_-]{1,64}$'"}}

Additional Context

Tried in two different terminals. Restarted, tried different prompts. Reinstalled. Same issues. Have been using 1.0.5 all day with no issues.