> ## 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.

# Adding Custom EVM Networks

You can enable any EVM network that we do not currently support out of the box by passing an array of `EvmNetwork` to the `evmNetworks` property in [`clientProps`](/react-native/reference/package-references/client#clientprops-type) when creating your client.

## Example

The following example sets the Ethereum mainnet and Polygon as supported networks for the application.
A comprehensive list of networks can be found at [chainlist.org](https://chainlist.org)

```TypeScript theme={"system"}
import { createClient } from '@dynamic-labs/react-native';

// Setting up list of evmNetworks
const evmNetworks = [
  {
    blockExplorerUrls: ['https://etherscan.io/'],
    chainId: 1,
    chainName: 'Ethereum Mainnet',
    iconUrls: ['https://app.dynamic.xyz/assets/networks/eth.svg'],
    name: 'Ethereum',
    nativeCurrency: {
      decimals: 18,
      name: 'Ether',
      symbol: 'ETH',
      iconUrl: 'https://app.dynamic.xyz/assets/networks/eth.svg',
    },
    networkId: 1,
    rpcUrls: ['https://mainnet.infura.io/v3/'],
    vanityName: 'ETH Mainnet',
  },
  {
    blockExplorerUrls: ['https://etherscan.io/'],
    chainId: 5,
    chainName: 'Ethereum Goerli',
    iconUrls: ['https://app.dynamic.xyz/assets/networks/eth.svg'],
    name: 'Ethereum',
    nativeCurrency: {
      decimals: 18,
      name: 'Ether',
      symbol: 'ETH',
      iconUrl: 'https://app.dynamic.xyz/assets/networks/eth.svg',
    },
    networkId: 5,
    rpcUrls: ['https://goerli.infura.io/v3/9aa3d95b3bc440fa88ea12eaa4456161'],
    vanityName: 'Goerli',
  },
  {
    blockExplorerUrls: ['https://polygonscan.com/'],
    chainId: 137,
    chainName: 'Matic Mainnet',
    iconUrls: ["https://app.dynamic.xyz/assets/networks/polygon.svg"],
    name: 'Polygon',
    nativeCurrency: {
      decimals: 18,
      name: 'MATIC',
      symbol: 'MATIC',
      iconUrl: 'https://app.dynamic.xyz/assets/networks/polygon.svg',
    },
    networkId: 137,
    rpcUrls: ['https://polygon-rpc.com'],
    vanityName: 'Polygon',
  },
];

const client = createClient({
  environmentId: 'REPLACE_WITH_YOUR_ENV_ID',
  evmNetworks,
});
```

## Type Reference

### Definition

| Attribute              | Value            | Required/Optional |
| ---------------------- | ---------------- | ----------------- |
| blockExplorerUrls      | `string[]`       | Required          |
| chainId                | `number`         | Required          |
| name                   | `string`         | Required          |
| iconUrls               | `string[]`       | Required          |
| nativeCurrency         | `NativeCurrency` | Required          |
| networkId              | `number`         | Required          |
| privateCustomerRpcUrls | `string[]`       | Optional          |
| rpcUrls                | `string[]`       | Required          |
| vanityName             | `string`         | Optional          |

#### NativeCurrency

| Attribute | Value    | Required/Optional |
| --------- | -------- | ----------------- |
| decimals  | `number` | Required          |
| iconUrl   | `string` | Optional          |
| name      | `string` | Required          |
| symbol    | `string` | Required          |
| denom     | `string` | Optional          |