Checked fact 132313 Oct 2026Agents and apps

The release notes say: "Changed the default limit on MCP tool descriptions sent up front and on MCP server instructions from 2,048 to 4,096 characters".

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The exact words it rests on

Changed the default limit on MCP tool descriptions sent up front and on MCP server instructions from 2,048 to 4,096 characters

What the source said when we opened it, on 13 Oct 2026.

The source

Claude Code v2.1.296 release notes
Anthropic · 2026-10-09

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Checked

Checked by the notis newsroom on 13 Oct 2026, against the source above.

In the story

Anthropic released Claude Code 2.1.296 with subagent auto-compaction and a Read option 13 Oct 2026

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In a sentence

“The release notes say: "Changed the default limit on MCP tool descriptions sent up front and on MCP server instructions from 2,048 to 4,096 characters".” ai notis, checked 13 Oct 2026. Source: Claude Code v2.1.296 release notes (Anthropic). https://ainotis.com/c/1323

As a reference (APA style)

ai notis. (2026, October 13). The release notes say: "Changed the default limit on MCP tool descriptions sent up front and on MCP server instructions from 2,048 to 4,096 characters" [Checked claim 1323]. ai notis. https://ainotis.com/c/1323

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