# Deposit

Create and list per-account chain deposit addresses for funding your Polyester account.

`client.Deposit` manages chain deposit addresses. Every method is authenticated and account-scoped.

Deposit addresses are per-account and per-chain. Creating an address is idempotent: it returns the existing address when one is already assigned. A deposit flow can target **funding** or **trading**; select and confirm the intended destination in the corresponding chain flow.

## Methods

| Method          | Summary                                           |
| --------------- | ------------------------------------------------- |
| `CreateAddress` | Create or return the deposit address for a chain. |
| `ListAddresses` | List deposit addresses for a chain.               |

### CreateAddress(ctx, chainID, account, subAccountID)

```go
addr, err := client.Deposit.CreateAddress(ctx, 1, nil, nil)
if err != nil { log.Fatal(err) }
fmt.Println(addr.ChainID, addr.DepositAddress)
```

The SDK returns `*errors.TransportError` if a successful response omits or empties the required address; it never fabricates a placeholder address.

### ListAddresses(ctx, chainID, account, subAccountID)

```go
listed, err := client.Deposit.ListAddresses(ctx, 1, nil, nil)
if err != nil { log.Fatal(err) }
for _, a := range listed.Addresses {
    fmt.Println(a.ChainID, a.DepositAddress)
}
```

## Related

- [Deposits & withdrawals guide](https://testnet.polyester.com/docs/sdk/go/guides/deposits-and-withdrawals)
- [Balances](https://testnet.polyester.com/docs/sdk/go/reference/balances)
- [Withdrawals](https://testnet.polyester.com/docs/sdk/go/reference/withdrawals)