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You can show the balance of the primary wallet by using the useDynamicContext hook and the getBalance method from the wallet connector.
React
import { useDynamicContext } from '@dynamic-labs/sdk-react-core'

const { primaryWallet } = useDynamicContext()

const [balance, setBalance] = useState(null)

useEffect(() => {
  const fetchBalance = async () => {
    if (primaryWallet) {
      const value = await primaryWallet.getBalance()
      setBalance(value)
    }
  }
  fetchBalance()
}, [primaryWallet])

return <p>{balance}</p>

​
Multichain Balances

For applications that need to fetch token balances across multiple blockchain networks simultaneously, Dynamic provides a getMultichainBalances method. This is useful for displaying comprehensive portfolio views or checking balances across different chains without making separate API calls. In React, you can use the useMultichainTokenBalances hook to fetch balances across multiple chains:
React
import { useMultichainTokenBalances, useDynamicContext } from '@dynamic-labs/sdk-react-core';
import { ChainEnum } from '@dynamic-labs/sdk-api-core';

const { primaryWallet } = useDynamicContext();

const { multichainTokenBalances, isLoading } = useMultichainTokenBalances({
  filterSpamTokens: true,
  requests: [
    {
      address: primaryWallet?.address || '',
      chain: ChainEnum.Evm,
      networkIds: [1, 137, 56], // Ethereum, Polygon, BNB
    },
  ],
});