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The QueryClientProvider component provides a QueryClient instance to all components in the React component tree. This is required for any TanStack Query hooks to work.

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Import

import { QueryClientProvider } from '@tanstack/react-query'

​
Signature

function QueryClientProvider({
  client,
  children,
}: QueryClientProviderProps): React.JSX.Element

​
Props

​
client
QueryClient
required
The QueryClient instance to provide to the component tree.
import { QueryClient } from '@tanstack/react-query'

const queryClient = new QueryClient()
​
children
React.ReactNode
The React components that will have access to the QueryClient.

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Examples

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Basic Usage

import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
import { App } from './App'

const queryClient = new QueryClient()

function Root() {
  return (
    <QueryClientProvider client={queryClient}>
      <App />
    </QueryClientProvider>
  )
}

​
With Custom Configuration

import { QueryClient, QueryClientProvider } from '@tanstack/react-query'

const queryClient = new QueryClient({
  defaultOptions: {
    queries: {
      staleTime: 1000 * 60 * 5, // 5 minutes
      gcTime: 1000 * 60 * 10, // 10 minutes
      retry: 1,
      refetchOnWindowFocus: false,
    },
    mutations: {
      retry: 1,
    },
  },
})

function Root() {
  return (
    <QueryClientProvider client={queryClient}>
      <App />
    </QueryClientProvider>
  )
}

​
With React Query Devtools

import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
import { ReactQueryDevtools } from '@tanstack/react-query-devtools'

const queryClient = new QueryClient()

function Root() {
  return (
    <QueryClientProvider client={queryClient}>
      <App />
      <ReactQueryDevtools initialIsOpen={false} />
    </QueryClientProvider>
  )
}

​
Multiple QueryClients

import { QueryClient, QueryClientProvider } from '@tanstack/react-query'

const globalQueryClient = new QueryClient()
const userQueryClient = new QueryClient({
  defaultOptions: {
    queries: {
      staleTime: 1000 * 60, // 1 minute
    },
  },
})

function Root() {
  return (
    <QueryClientProvider client={globalQueryClient}>
      <GlobalData />
      <QueryClientProvider client={userQueryClient}>
        <UserData />
      </QueryClientProvider>
    </QueryClientProvider>
  )
}

​
With Error Handling

import { QueryClient, QueryClientProvider } from '@tanstack/react-query'

const queryClient = new QueryClient({
  defaultOptions: {
    queries: {
      throwOnError: (error) => {
        // Only throw errors for server errors (500+)
        return error.status >= 500
      },
    },
  },
  queryCache: new QueryCache({
    onError: (error, query) => {
      console.error('Query error:', error, 'Query:', query.queryKey)
    },
  }),
  mutationCache: new MutationCache({
    onError: (error, variables, context, mutation) => {
      console.error('Mutation error:', error)
    },
  }),
})

function Root() {
  return (
    <QueryClientProvider client={queryClient}>
      <App />
    </QueryClientProvider>
  )
}

​
With Persister

import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
import { PersistQueryClientProvider } from '@tanstack/react-query-persist-client'
import { createSyncStoragePersister } from '@tanstack/query-sync-storage-persister'

const queryClient = new QueryClient({
  defaultOptions: {
    queries: {
      gcTime: 1000 * 60 * 60 * 24, // 24 hours
    },
  },
})

const persister = createSyncStoragePersister({
  storage: window.localStorage,
})

function Root() {
  return (
    <PersistQueryClientProvider
      client={queryClient}
      persistOptions={{ persister }}
    >
      <App />
    </PersistQueryClientProvider>
  )
}

​
Using State Management

import { useState } from 'react'
import { QueryClient, QueryClientProvider } from '@tanstack/react-query'

function Root() {
  // Create a stable QueryClient instance
  const [queryClient] = useState(
    () =>
      new QueryClient({
        defaultOptions: {
          queries: {
            staleTime: 1000 * 60 * 5,
          },
        },
      })
  )

  return (
    <QueryClientProvider client={queryClient}>
      <App />
    </QueryClientProvider>
  )
}

​
With Next.js App Router

'use client'

import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
import { useState } from 'react'

export function Providers({ children }: { children: React.ReactNode }) {
  const [queryClient] = useState(
    () =>
      new QueryClient({
        defaultOptions: {
          queries: {
            staleTime: 60 * 1000,
          },
        },
      })
  )

  return (
    <QueryClientProvider client={queryClient}>
      {children}
    </QueryClientProvider>
  )
}

​
With TypeScript Configuration

import { QueryClient, QueryClientProvider } from '@tanstack/react-query'

interface CustomError {
  message: string
  status: number
}

const queryClient = new QueryClient({
  defaultOptions: {
    queries: {
      retry: (failureCount, error: CustomError) => {
        if (error.status === 404) return false
        return failureCount < 3
      },
    },
  },
})

function Root() {
  return (
    <QueryClientProvider client={queryClient}>
      <App />
    </QueryClientProvider>
  )
}

​
Behavior

The QueryClientProvider component:
  1. Provides the QueryClient instance through React context
  2. Automatically calls client.mount() when the component mounts
  3. Automatically calls client.unmount() when the component unmounts
  4. Makes the QueryClient accessible to all child components via useQueryClient

​
Notes

The QueryClientProvider must be placed above any components that use TanStack Query hooks.
Create the QueryClient instance outside of your component or use useState to ensure a stable instance across renders.
You can nest multiple QueryClientProvider components to use different QueryClient instances in different parts of your app.
The QueryClient should be created once per application. Creating it inside a component without useState will cause performance issues.

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