Unclear What length limit the second copy uses, and where that copy is shown, is not stated.
What
MCP servers are outside programs that give Claude Code extra tools, and each tool comes with a written description. Claude Code already cut long descriptions down to a maximum length. When it sets up MCP tools, it now also makes a second copy of each description, shortened to a different length limit. The length limit can also now be passed in rather than always worked out the same way.
Why
The same MCP tool description may now be shortened to different lengths in different places.
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The writer flagged doubt
What length limit the second copy uses, and where that copy is shown, is not stated.