Claude Code now supports TypeScript mods

Anthropic added Mods to Claude Code — small TypeScript functions that hook into app events to change behavior and interface. Mods ship through the existing plugin system, and users can have Claude Code build them from a plain-English description.

• Mods are TypeScript functions hooked into Claude Code events
• They can alter UI, prompts, and tool calls
• Built-in /diff is already a Mod and can be replaced
• Installation goes through the existing plugin system