[BUG]

Resolved 💬 6 comments Opened Jun 6, 2025 by GratefulDave Closed Jun 6, 2025

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.
  3. <!-- And so on... -->

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)

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