Anthropic introduces mods for Claude Code

Developers can write their own mods or ask Claude Code to generate one. Mods are not sandboxed, so users should only install them from trusted sources. The system emits events for actions such as calling a tool or drawing part of the screen, and a mod can hook into these events to run before, after, or instead of the original action.

Some built‑in features, like the /diff command, are now shipped as mods, allowing users to enable or replace them. Admins on Team and Enterprise plans can control which mods load first, including a security‑default mod that blocks risky changes. The feature is available today in the CLI and desktop app.