> For the complete documentation index, see [llms.txt](https://docs.datnoid.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.datnoid.com/developers/performing-a-swap.md).

# Performing a swap

## Quote Swap

You may first want to get a quote before executing a transaction to see the estimated amount you will receive.

```typescript
async function getSwapQuote(
  payTokenAddress: string,
  receiveTokenAddress: string,
  payAmount: string
) {
  try {
    const data = await client.readContract({
      address: contractAddress,
      abi: poolABI,
      functionName: 'quoteSwap',
      args: [payTokenAddress, receiveTokenAddress, payAmount],
    });
    console.log('data', data);
  } catch (error) {
    console.error('Error in quoteSwap:', error);
  }
}

```

```javascript
Result [ 333222203700616769461576n, 2500000000000000000n ]
```

The first item of the array response will be the expected amount of the receiveToken (dont forget to format in decimals), the second item is the fee amount in LP tokens. 

## Actual Swap

To Perform the actual swap, will require a 4th parameter, minReceiveAmount. This is basically how you set slippage. set to 0 means no slippage.

```typescript
async function swap(
  payTokenAddress: string,
  receiveTokenAddress: string,
  payAmount: string,
  minReceiveAmount: string
) {
  try {
    const data = await walletClient.writeContract({
      address: contractAddress,
      abi: poolABI,
      functionName: 'swap',
      args: [payTokenAddress, receiveTokenAddress, payAmount, minReceiveAmount],
      account: account,
    });
    console.log('swap data', data);
  } catch (error) {
    console.error('Error in swap:', error);
  }
}
```

Sample response.

```javascript
[ 
1n, 
'0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266', 
'0x5FbDB2315678afecb367f032d93F642f64180aa3', 
'0xe7f1725E7734CE288F8367e1Bb143E90bb3F0512', 
1230000000000000000n, 
41164953n, 
20806901801573205n 
]
```

and the types

```solidity
Swap(
uint256 indexed txCount,
address indexed user,
address payToken,
address receiveToken,
uint256 payAmount,
uint256 receiveAmount,
uint256 feeAmount
);
```

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