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

# Get Balance

Fetches a user's balance in the vault. To call the contract directly instead, see [Vault Methods](/advanced-documentation/direct-contract-calls/vault-methods).

```typescript theme={null}
const vault = 'CAQ6PAG4X6L7LJVGOKSQ6RU2LADWK4EQXRJGMUWL7SECS7LXUEQLM5U7';

async function balance(user: string, apiClient: ApiClient): bigint {
    const {underlyingBalance: balance} = await apiClient.getData("balance", vault, {
        from: user
    });
    return BigInt(balance[0]);
}
```