[BUG]

[GratefulDave]

Environment

• Platform (select one):
  • [x ] Anthropic API
• Claude CLI version: 1.10.25
• Operating System: Sequoia 15.5
• Terminal: iTerm2

Bug Description

When making any request:

This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason: McpError: MCP error -32603: Tool not found: closeAllDiffTabs at Mc1._onresponse (file:///Users/davidandrews/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1358:20090)

Steps to Reproduce

1. Launch code.
2. Make request.

Expected Behavior

No error.

Actual Behavior

This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason: McpError: MCP error -32603: Tool not found: closeAllDiffTabs at Mc1._onresponse (file:///Users/{username}/.nvm/versions/node/v23.10.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1358:20090)

[igorkofman]

'claude update' to resolve

[digismack]

'claude update' to resolve

> claude update
Current version: 1.0.16
Checking for updates...
Claude Code is up to date (1.0.16)

Still experiencing the issue after a claude update which says there are no updates. It only seemed to happen after I installed the updated VSCode extension, and "Install specific version" is greyed out and doesn't appear to be supported.

[igorkofman]

What does claude --version show? What error exactly are you hitting?

[digismack]

The error message is similar to OP's:

This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason:
Error: command 'type' already exists
    at hX2 (file:///Users/digismack/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1376:12108)
    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
    at async oY5 (file:///Users/digismack/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1921:10075)
    at async J (file:///Users/digismack/.nvm/versions/node/v22.16.0/lib/node_modules/@anthropic-ai/claude-code/cli.js:1921:8929)

claude --version outputs:

1.0.16 (Claude Code)

Any time it tries to modify code in what would pull up the new VSCode integrated diff viewer/editor, it shows this error.

Edit: Someone just opened a ticket for this exact error message here.

[igorkofman]

Let's continue on that issue

[github-actions[bot]]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.