Addy Osmani shares guide to Claude Code Mods: build custom UI without learning the API
addyosmani · x · 2026-10-28
Addy Osmani published a getting-started guide for Claude Code Mods, small JavaScript/TypeScript files that run inside a Claude Code session to react to events, modify behavior, or render custom UI in the terminal and desktop apps.
Key highlight: mods can be created without learning their API — just run claude, describe the mod you want, approve the files, enable hot reloading, and it appears when the turn ends. The guide covers mod capabilities, prompting Claude Code to build one, and how to persist, distribute, and install mods. Screenshots show example mods like a "Token Weather" context-usage display and a breathing-exercise UI.
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