[BUG] macOS 26.4 Tahoe beta + MCP computer-use checkAccessibility crash

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?

Description

mcp__computer-use__request_access fails immediately with:

Cannot read properties of undefined (reading 'checkAccessibility')

This happens every time, even after reconnecting via /mcp. No permission dialog ever appears.

## Environment

• Claude Code: 2.1.87
• macOS: 26.4 (Tahoe beta, build 25E5223i)
• Terminal: Warp
• Accessibility permission: granted for both Warp and Claude Desktop
• Screen recording permission: granted for both Warp and Claude Desktop

## Reproduction

1. Open Claude Code in terminal
2. Run /mcp to confirm computer-use is connected
3. Ask Claude to use computer-use (e.g. "take a screenshot")
4. request_access call fails with the error above

## Notes

Suspect the Tahoe beta changed or removed an accessibility API that computer-use depends on
internally. The checkAccessibility method is being called on an undefined object, suggesting the
native bridge isn't initializing.

What Should Happen?

request_access should display the permission dialog and grant access to the requested applications,
allowing computer-use tools (screenshot, click, type, etc.) to function normally on macOS Tahoe.

Error Messages/Logs

Steps to Reproduce

1. Install Claude Code 2.1.87 on macOS Tahoe 26.4 (beta, build 25E5223i)
2. Open Claude Code in terminal (Warp)
3. Run /mcp — computer-use shows as connected
4. Ask Claude to take a screenshot or use any computer-use tool
5. request_access is called and immediately fails with:

Cannot read properties of undefined (reading 'checkAccessibility')

1. No permission dialog ever appears

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.87

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Warp

Additional Information

_No response_