> For the complete documentation index, see [llms.txt](https://jungle-toolkit.gitbook.io/evm-xcm-jungle-toolkit/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://jungle-toolkit.gitbook.io/evm-xcm-jungle-toolkit/build-an-evm+substrate-wallet-compatible-architecture-in-your-dapp/the-substrate-address-standard/get-the-native-balance-of-a-signer.md).

# Get the native balance of a Signer

In this section we'll learn how to get the native balance for a Signer using polkadot.js API

## Checking the native balance of a Substrate address using Polkadot API

```javascript
      const wsProvider = new WsProvider("wss://rpc.polkadot.io");
      const api = await ApiPromise.create({ provider: wsProvider });
      const substrateAddress = ""
      let balance = await api.query.system.account(substrateAddress);
```

As you can see, the `wsProvider` is defining the chain on which the native balance will be fetched.