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# UnoswapRouter

## Derives[​](https://docs.1inch.io/docs/aggregation-protocol/smart-contract/UnoswapRouter#derives) <a href="#derives" id="derives"></a>

* [Permitable](broken://pages/DOO2eTZDAe5crCpeY8uu)
* [EthReceiver](broken://pages/iW8VH14sl4YfZUdHor2O)

## Functions[​](https://docs.1inch.io/docs/aggregation-protocol/smart-contract/UnoswapRouter#functions) <a href="#functions" id="functions"></a>

### unoswapWithPermit[​](https://docs.1inch.io/docs/aggregation-protocol/smart-contract/UnoswapRouter#unoswapwithpermit) <a href="#unoswapwithpermit" id="unoswapwithpermit"></a>

```javascript
function unoswapWithPermit(
  contract IERC20 srcToken,
  uint256 amount,
  uint256 minReturn,
  bytes32[] pools,
  bytes permit
) external returns (uint256 returnAmount)
```

Same as `unoswap` but calls permit first, allowing to approve token spending and make a swap in one transaction.

**Parameters:**[**​**](https://docs.1inch.io/docs/aggregation-protocol/smart-contract/UnoswapRouter#parameters)

| Name        | Type            | Description                                                                                         |
| ----------- | --------------- | --------------------------------------------------------------------------------------------------- |
| `srcToken`  | contract IERC20 | Source token                                                                                        |
| `amount`    | uint256         | Amount of source tokens to swap                                                                     |
| `minReturn` | uint256         | Minimal allowed returnAmount to make transaction commit                                             |
| `pools`     | bytes32\[]      | Pools chain used for swaps. Pools src and dst tokens should match to make swap happen               |
| `permit`    | bytes           | Should contain valid permit that can be used in `IERC20Permit.permit` calls. See tests for examples |

### unoswap[​](https://docs.1inch.io/docs/aggregation-protocol/smart-contract/UnoswapRouter#unoswap) <a href="#unoswap" id="unoswap"></a>

```javascript
function unoswap(
  contract IERC20 srcToken,
  uint256 amount,
  uint256 minReturn,
  bytes32[] pools
) public returns (uint256 returnAmount)
```

Performs swap using Uniswap exchange. Wraps and unwraps ETH if required. Sending non-zero `msg.value` for anything but ETH swaps is prohibited

**Parameters:**[**​**](https://docs.1inch.io/docs/aggregation-protocol/smart-contract/UnoswapRouter#parameters-1)

| Name        | Type            | Description                                                                           |
| ----------- | --------------- | ------------------------------------------------------------------------------------- |
| `srcToken`  | contract IERC20 | Source token                                                                          |
| `amount`    | uint256         | Amount of source tokens to swap                                                       |
| `minReturn` | uint256         | Minimal allowed returnAmount to make transaction commit                               |
| `pools`     | bytes32\[]      | Pools chain used for swaps. Pools src and dst tokens should match to make swap happen |


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