---
name: data-client-setup
description: Install and set up @data-client/react or @data-client/vue in a project. Detects project type (NextJS, Expo, React Native, Vue, plain React) and protocol (REST, GraphQL, custom), then follows the bundled protocol-specific setup guide.
disable-model-invocation: true
---

# Setup Reactive Data Client

## Detection Steps

Before installing, detect the project type and protocol by checking these files:

### 1. Detect Package Manager

Check which lock file exists:
- `yarn.lock` → use `yarn add`
- `pnpm-lock.yaml` → use `pnpm add`
- `package-lock.json` or `bun.lockb` → use `npm install` or `bun add`

### 2. Detect Project Type

Check `package.json` dependencies:

| Check | Project Type |
|-------|--------------|
| `"next"` in dependencies | **NextJS** |
| `"expo"` in dependencies | **Expo** |
| `"vue"` in dependencies | **Vue** |
| `"react-native"` in dependencies (no expo) | **React Native** |
| `"react"` in dependencies | **Plain React** |

### 3. Detect Protocol Type

Scan the codebase to determine which data-fetching protocols are used:

#### REST Detection

Look for these patterns:
- `fetch()` calls with REST-style URLs (`/api/`, `/users/`, etc.)
- HTTP client libraries: `axios`, `ky`, `got`, `superagent` in `package.json`
- Files with REST patterns: `api.ts`, `client.ts`, `services/*.ts`
- URL patterns with path parameters: `/users/:id`, `/posts/:postId/comments`
- HTTP methods in code: `method: 'GET'`, `method: 'POST'`, `.get(`, `.post(`

#### GraphQL Detection

Look for these patterns:
- `@apollo/client`, `graphql-request`, `urql`, `graphql-tag` in `package.json`
- `.graphql` or `.gql` files in the project
- `gql\`` template literal tags
- GraphQL query patterns: `query {`, `mutation {`, `subscription {`
- GraphQL endpoint URLs: `/graphql`

#### Custom Protocol Detection

For async operations that don't match REST or GraphQL:
- Custom async functions returning Promises
- Third-party SDK clients (Firebase, Supabase, AWS SDK, etc.)
- IndexedDB or other local async storage

### 4. Install the Skills This Project Needs

Protocol setup guides are bundled in this skill, but defining and using data afterwards is covered by other Data Client skills. Install the ones that match what you detected, skipping any already installed:

| Detected | Skills |
|----------|--------|
| Always | `data-client-schema`, `data-client-manager` |
| React (NextJS, Expo, React Native, plain React) | `data-client-react`, `data-client-react-testing` |
| Vue | `data-client-vue`, `data-client-vue-testing` |
| REST | `data-client-rest` |
| GraphQL | None beyond Always (`data-client-schema` covers `@data-client/graphql`) |
| Custom async | None beyond Always (`data-client-schema` covers `@data-client/endpoint`) |

Use the installer that installed this skill. For OpenSkills and the skills CLI, add `-g` if this skill lives under your home directory rather than the project.

- **Claude Code plugin** (this skill is under `~/.claude/plugins/`): `claude plugin install react@data-client` or `claude plugin install vue@data-client`. Either includes every skill above.
- **OpenSkills** (`AGENTS.md` lists skills in an `<available_skills>` block): `npx openskills install reactive/data-client/.agents/skills/<skill>`, once per skill.
- **Otherwise** use the skills CLI: `npx skills add reactive/data-client --yes --skill <skill> --skill <skill> ...`

Newly installed skills may not be loaded until the next session, so read their `SKILL.md` directly when this skill says to apply them.

## Installation

### Core Packages

| Framework | Core Package |
|-----------|----------|
| React (all) | `@data-client/react` + dev: `@data-client/test` |
| Vue | `@data-client/vue` (testing included) |

### Install Command Examples

**React (NextJS, Expo, React Native, plain React):**
```bash
npm install @data-client/react && npm install -D @data-client/test
yarn add @data-client/react && yarn add -D @data-client/test
pnpm add @data-client/react && pnpm add -D @data-client/test
```

**Vue:**
```bash
npm install @data-client/vue
yarn add @data-client/vue
pnpm add @data-client/vue
```

## Provider Setup

After installing, add the provider at the top-level component.

### NextJS (App Router)

Edit `app/layout.tsx`:

```tsx
import { DataProvider } from '@data-client/react/nextjs';

export default function RootLayout({ children }) {
  return (
    <html>
      <DataProvider>
        <body>
          {children}
        </body>
      </DataProvider>
    </html>
  );
}
```

**Important**: NextJS uses `@data-client/react/nextjs` import path.

### Expo

Edit `app/_layout.tsx`:

```tsx
import { Stack } from 'expo-router';
import { DataProvider } from '@data-client/react';

export default function RootLayout() {
  return (
    <DataProvider>
      <Stack>
        <Stack.Screen name="index" />
      </Stack>
    </DataProvider>
  );
}
```

### React Native

Edit entry file (e.g., `index.tsx`):

```tsx
import { DataProvider } from '@data-client/react';
import { AppRegistry } from 'react-native';

const Root = () => (
  <DataProvider>
    <App />
  </DataProvider>
);
AppRegistry.registerComponent('MyApp', () => Root);
```

### Plain React (Vite, CRA, etc.)

Edit entry file (e.g., `index.tsx`, `main.tsx`, or `src/index.tsx`):

```tsx
import { DataProvider } from '@data-client/react';
import { createRoot } from 'react-dom/client';

createRoot(document.getElementById('root')!).render(
  <DataProvider>
    <App />
  </DataProvider>,
);
```

### Vue

Edit `main.ts`:

```ts
import { createApp } from 'vue';
import { DataClientPlugin } from '@data-client/vue';
import App from './App.vue';

const app = createApp(App);

app.use(DataClientPlugin, {
  // optional overrides
  // managers: getDefaultManagers(),
  // initialState,
  // Controller,
  // gcPolicy,
});

app.mount('#app');
```

## Protocol-Specific Setup

After provider setup, follow the guide for each detected protocol. These guides are bundled copies of the standalone protocol setup skills, so they need nothing else installed.

### REST APIs

Follow [references/data-client-rest-setup.md](references/data-client-rest-setup.md), which will:
1. Install `@data-client/rest`
2. Offer to create a custom `BaseEndpoint` class extending `RestEndpoint`
3. Configure common behaviors: urlPrefix, authentication, error handling

### GraphQL APIs

Follow [references/data-client-graphql-setup.md](references/data-client-graphql-setup.md), which will:
1. Install `@data-client/graphql`
2. Create and configure `GQLEndpoint` instance
3. Set up authentication headers

### Custom Async Operations

Follow [references/data-client-endpoint-setup.md](references/data-client-endpoint-setup.md), which will:
1. Install `@data-client/endpoint`
2. Offer to wrap existing async functions with `new Endpoint()`
3. Configure schemas and caching options

### Multiple Protocols

If multiple protocols are detected, follow each protocol's guide. Each protocol package can be installed alongside others.

## Verification Checklist

After setup, verify:

- [ ] Core packages installed in `package.json`
- [ ] Provider/Plugin wraps the app at root level
- [ ] Correct import path used (especially `@data-client/react/nextjs` for NextJS)
- [ ] No duplicate providers in component tree
- [ ] Protocol-specific setup completed via its guide

## Common Issues

### NextJS: Wrong Import Path

❌ Wrong:
```tsx
import { DataProvider } from '@data-client/react';
```

✅ Correct for NextJS:
```tsx
import { DataProvider } from '@data-client/react/nextjs';
```

### Provider Not at Root

The `DataProvider` must wrap all components that use data-client hooks. Place it at the topmost level possible.
In Vue, call `app.use(DataClientPlugin)` on the root app before `app.mount()`.

## Next Steps

After core setup and protocol-specific setup:
1. Define data schemas using `Entity` - see skill "data-client-schema"
2. Use hooks like `useSuspense`, `useQuery`, `useController` - see skill "data-client-react" or "data-client-vue"
3. Define REST resources - see skill "data-client-rest"

## References

Vue projects: read `<name>.vue.md` instead of `<name>.md` when it exists.

For detailed API documentation, see the [references](references/) directory:

- [DataProvider](references/DataProvider.md) - React root provider component (Vue installs `DataClientPlugin` instead; see installation)
- [DataClientPlugin](references/DataClientPlugin.md) - Plugin options (Vue)
- [installation](references/installation.md) - Installation guide
- [getDefaultManagers](references/getDefaultManagers.md) - Default managers
- [REST setup](references/data-client-rest-setup.md) - `@data-client/rest` setup and migration from axios, fetch, ky, superagent or got
- [GraphQL setup](references/data-client-graphql-setup.md) - `@data-client/graphql` setup
- [Custom endpoint setup](references/data-client-endpoint-setup.md) - Wrapping other async functions with `@data-client/endpoint`