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[Doc] Add tool_arguments to instrumentation callback documentation#222

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koic wants to merge 1 commit intomodelcontextprotocol:mainfrom
koic:update_readme_for_instrumentation_callback
Open

[Doc] Add tool_arguments to instrumentation callback documentation#222
koic wants to merge 1 commit intomodelcontextprotocol:mainfrom
koic:update_readme_for_instrumentation_callback

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@koic koic commented Jan 31, 2026

Motivation and Context

Follow-up to #218, which added the tool_arguments feature to the instrumentation callback. This updates README.md to document the new tool_arguments key in both instrumentation callback sections, and removes redundant instrumentation documentation.

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

Follow-up to modelcontextprotocol#218, which added the `tool_arguments` feature to the instrumentation callback.
This updates README.md to document the new `tool_arguments` key in both instrumentation callback sections,
and removes redundant instrumentation documentation.
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