[BUG]API Error during init, input_examples in the tool definitions

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?

When trying to call /init method getting the following error

/model to try Opus 4.5

/init is analyzing your codebase…

⎿ API Error: 400 {"type":"error","error":{"type":"invalid_request_error","mess
age":"tools.4.custom.input_examples: Extra inputs are not
permitted"},"request_id":"req_vrtx_011CW2b38CkCrnDgpLPqADgu"}

What Should Happen?

/model to try Opus 4.5
It should create claude.md file in the repository

Error Messages/Logs

Steps to Reproduce

claude

/model to try Opus 4.5

/init is analyzing your codebase…

⎿ API Error: 400 {"type":"error","error":{"type":"invalid_request_error","mess
age":"tools.4.custom.input_examples: Extra inputs are not
permitted"},"request_id":"req_vrtx_011CW2b38CkCrnDgpLPqADgu"}

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

% claude --version 2.0.67 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_