> ## Documentation Index
> Fetch the complete documentation index at: https://sequence-0fb8d9e6-api_docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# useIndexerGatewayClient

> Hook for accessing the Sequence Indexer Gateway client for multi-chain queries

## Import

```tsx theme={null}
import { useIndexerGatewayClient } from '@0xsequence/hooks'
```

## Usage

```tsx theme={null}
import { useIndexerGatewayClient } from '@0xsequence/hooks'
import { useAccount } from 'wagmi'

function MultiChainBalances() {
  const { address } = useAccount()
  const indexerGatewayClient = useIndexerGatewayClient()
  
  // Example: Fetch token balances across chains
  const fetchBalances = async () => {
    const response = await indexerGatewayClient.getTokenBalancesSummary({
      chainIds: [1, 137], // Ethereum and Polygon
      filter: {
        accountAddresses: [address || ''],
        omitNativeBalances: false
      }
    })
    
    return response
  }

  return (
    <div>
      {/* ... */}
    </div>
  )
}
```

## Return Type: `SequenceIndexerGateway`

The hook returns a `SequenceIndexerGateway` instance configured with your project's settings. This client provides methods for querying token data across multiple chains in a single request.

### Available Methods

The returned client includes the following methods:

```tsx theme={null}
interface SequenceIndexerGateway {
  // Token Balance Methods
  getNativeTokenBalance(args: GetNativeTokenBalanceArgs): Promise<GetNativeTokenBalanceReturn>
  getTokenBalances(args: GetTokenBalancesArgs): Promise<GetTokenBalancesReturn>
  getTokenBalancesSummary(args: GetTokenBalancesSummaryArgs): Promise<GetTokenBalancesSummaryReturn>
  getTokenBalancesDetails(args: GetTokenBalancesDetailsArgs): Promise<GetTokenBalancesDetailsReturn>
  getTokenBalancesByContract(args: GetTokenBalancesByContractArgs): Promise<GetTokenBalancesByContractReturn>
  
  // Balance Updates
  getBalanceUpdates(args: GetBalanceUpdatesArgs): Promise<GetBalanceUpdatesReturn>
  
  // Service Status Methods
  ping(): Promise<PingReturn>
  version(): Promise<VersionReturn>
  runtimeStatus(): Promise<RuntimeStatusReturn>
}
```

## Parameters

The hook doesn't accept any parameters, but uses configuration from the `useConfig` hook:

```tsx theme={null}
interface Config {
  projectAccessKey: string
  env: {
    indexerGatewayUrl: string
    // ... other environment settings
  }
}
```

The configuration determines:

* The gateway URL for API requests
* Your project's access key for authentication
* Environment-specific settings

The client is memoized based on the `projectAccessKey` to prevent unnecessary re-instantiation.