Claude Code mods let you change how Claude Code works and looks

ClaudeProduct changeConfirmed

Anthropic introduced mods, small TypeScript functions that change how Claude Code behaves.

A mod can rewrite a prompt, add interface elements, replace a built-in feature or add new functionality.
Mods ship inside plugins, so they are installed and shared like any plugin.
Anthropic warns that mods are not sandboxed and run with the same access to your machine as Claude Code, so install only from sources you trust.
The built-in /diff feature is now a mod.

Who can use it: Claude Code CLI and desktop app users, via plugins that include mods. Existing plugin controls apply to admins; Team and Enterprise plans load a built-in 'sec-default' mod first. Other plan limits: not specified by source.
When: Available from October 1, 2026, in the Claude Code CLI and desktop app.

Read the official announcement for access details. Availability can depend on your plan, region or workplace settings.

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