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@koic koic commented Dec 7, 2025

Motivation and Context

Claude Code sometimes only shows Error: MCP error -32603: Internal error when an unexpected exception occurs during a tool call.

This change broadens the exception handling scope so the server can surface the exception message more often, making failures easier to diagnose.

How Has This Been Tested?

Existing tests pass.

Breaking Changes

None.

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to change)
  • Documentation update

Checklist

  • I have read the MCP Documentation
  • My code follows the repository's style guidelines
  • New and existing tests pass locally
  • I have added appropriate error handling
  • I have added or updated documentation as needed

Claude Code sometimes only shows `Error: MCP error -32603: Internal error`
when an unexpected exception occurs during a tool call.

This change broadens the exception handling scope so the server can surface
the exception message more often, making failures easier to diagnose.
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