> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dynamic.xyz/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Getting a Viem PublicClient

[Viem](https://viem.sh/) is one of the most popular libraries for interacting with EVM blockchains.

A [PublicClient](https://viem.sh/docs/clients/public) is an interface to "public" JSON-RPC API methods
such as retrieving block numbers, transactions, reading from smart contracts, etc.

We provide a helper method to allow you to create a Viem PublicClient given some network data.

## Usage

<Tabs>
  <Tab title="JavaScript">
    ```javascript theme={"system"}
    import { getActiveNetworkData } from '@dynamic-labs-sdk/client';
    import { createPublicClientFromNetworkData } from '@dynamic-labs-sdk/evm/viem';

    const someAction = async (walletAccount) => {
      // you can use your custom NetworkData object or get the active network data from a wallet account
      // with the getActiveNetworkData function

      const { networkData } = await getActiveNetworkData({ walletAccount });

      const publicClient = createPublicClientFromNetworkData({ networkData });

       // PublicClient is now ready to use
    };
    ```
  </Tab>

  <Tab title="React">
    Derive the public client from `useGetActiveNetworkData`, which automatically re-fetches when the wallet account changes or the user switches networks:

    ```tsx theme={"system"}
    import { createPublicClientFromNetworkData } from '@dynamic-labs-sdk/evm/viem';
    import { useGetActiveNetworkData } from '@dynamic-labs-sdk/react-hooks';
    import { useMemo } from 'react';

    function useEvmPublicClient(walletAccount) {
      const { data: activeNetwork } = useGetActiveNetworkData({ walletAccount });

      return useMemo(
        () =>
          activeNetwork?.networkData
            ? createPublicClientFromNetworkData({ networkData: activeNetwork.networkData })
            : null,
        [activeNetwork],
      );
    }
    ```
  </Tab>
</Tabs>

## Related functions

* [Get active network](/javascript/reference/wallets/get-active-network)
* [Adding EVM extensions](/javascript/reference/evm/adding-evm-extensions)
* [Getting Viem Wallet Client](/javascript/reference/evm/getting-viem-wallet-client)