Iii State Reactions

Reactive state management that fires handlers when watched values change, similar to Firebase's onSnapshot or Convex mutations. You get old and new values plus metadata on every state operation (set, update, delete), and you can gate execution with condition functions so reactions only fire when specific criteria are met. Multiple reactions can watch the same scope independently, which is handy for keeping different parts of your system in sync without tight coupling. It's from the iii-hq team and has passed multiple security audits. If you're building something that needs to react to state changes without manually wiring up callbacks everywhere, this handles the plumbing.

Install to Claude Code

npx -y skills add iii-hq/iii --skill iii-state-reactions --agent claude-code