[BUG]

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 an existing session is selected in VSCODE claude plugin it encounters the following error.
[ERROR] MCP server "claude-vscode" Failed to fetch tools: MCP error -32601: Method not found

• Version: 2.1.29
• Error: MCP error -32601: Method not found on tools/list
• Trigger: Selecting an existing session

Notes:
This might have been caused by accidentally starting Claude CLI and VSCode at the same time, and interrupting the Claude CLI before its initialization was complete.

What Should Happen?

When VSCODE starts and automatically selects the previous Claude session, It should load the session history and start without errors.

Error Messages/Logs

[ERROR] MCP server "claude-vscode" Failed to fetch tools: MCP error -32601: Method not found

Steps to Reproduce

1. Start Claude CLI in a project folder
2. Immediately start VSCode in the same folder
3. Yell Oops, and quickly hit Ctrl-C in the Claude CLI window.
4. VSCode crashes
5. Start Claude CLI and paste the error, and follow suggestions: reload the extension, ...

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.29

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_