# Add Zustand

> Add Zustand state management to an Expo app for UI state. Use when the user says 'add Zustand', 'state management', 'global state', 'app store'.

- **Type:** Skill
- **Install:** `agentstack add skill-khadinakbarlabs-expo-mobile-app-builder-add-zustand`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [khadinakbarlabs](https://agentstack.voostack.com/s/khadinakbarlabs)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [khadinakbarlabs](https://github.com/khadinakbarlabs)
- **Source:** https://github.com/khadinakbarlabs/expo-mobile-app-builder/tree/main/skills/add-zustand
- **Website:** https://khadinakbar.com

## Install

```sh
agentstack add skill-khadinakbarlabs-expo-mobile-app-builder-add-zustand
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Add Zustand

Lightweight, hook-based state for UI / client state. Pair with TanStack Query for server state.

## Install
```bash
npm install zustand
```

## Basic store
```ts
// state/auth.ts
import { create } from 'zustand';
import { persist, createJSONStorage } from 'zustand/middleware';
import AsyncStorage from '@react-native-async-storage/async-storage';

interface AuthState {
  user: { id: string; email: string } | null;
  setUser: (user: AuthState['user']) => void;
  signOut: () => void;
}

export const useAuth = create()(
  persist(
    (set) => ({
      user: null,
      setUser: (user) => set({ user }),
      signOut: () => set({ user: null }),
    }),
    {
      name: 'auth',
      storage: createJSONStorage(() => AsyncStorage),
    }
  )
);
```

## Usage
```tsx
const user = useAuth((s) => s.user);
const signOut = useAuth((s) => s.signOut);
```

## Slices pattern (when store grows)
```ts
import { StateCreator } from 'zustand';

const createAuthSlice: StateCreator = (set) => ({
  user: null,
  setUser: (user) => set({ user }),
});

const createCartSlice: StateCreator = (set) => ({
  items: [],
  addItem: (item) => set((s) => ({ items: [...s.items, item] })),
});

export const useApp = create()((...a) => ({
  ...createAuthSlice(...a),
  ...createCartSlice(...a),
}));
```

## ABSOLUTE NO
- Don't put server data in Zustand. Use TanStack Query.
- Don't use AsyncStorage for sensitive tokens. Use expo-secure-store.
- Don't subscribe to whole store; select specific slices.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [khadinakbarlabs](https://github.com/khadinakbarlabs)
- **Source:** [khadinakbarlabs/expo-mobile-app-builder](https://github.com/khadinakbarlabs/expo-mobile-app-builder)
- **License:** MIT
- **Homepage:** https://khadinakbar.com

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-khadinakbarlabs-expo-mobile-app-builder-add-zustand
- Seller: https://agentstack.voostack.com/s/khadinakbarlabs
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.