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

# Swaps via Deposit

> This page explains how to execute a transaction via deposit using Rubic API.

<Note>
  Swap via deposit does not require a wallet connection. User should make a deposit by himself.
</Note>

## Retrieving Token Quotes

Now that the wallet is connected, we can request token quotes from Rubic API.

**Endpoint:** `POST https://api-v2.rubic.exchange/api/routes/quoteBest`

```javascript theme={null}
async function quoteBest() {
    const response = await fetch("https://api-v2.rubic.exchange/api/routes/quoteBest", {
        method: "POST",
        headers: {
            "Content-Type": "application/json",
        },
        body: {
            "srcTokenAddress": "0x0000000000000000000000000000000000000000",
            "srcTokenAmount": "3",
            "srcTokenBlockchain": "COSMOS",
            "dstTokenAddress": "0x0000000000000000000000000000000000000000",
            "dstTokenBlockchain": "TRON",
            "referrer": "rubic.exchange"
          }
    });
    const data = await response.json();
    const { estimate, transaction, id } = data;
    console.log(estimate);
    // {
    //     This is an estimated amount you will get after the swap.
    //     "destinationTokenAmount": "56.797373",
    //     "destinationTokenMinAmount": "55.093452",
    //
    //     "destinationUsdAmount": 13.26,
    //     "destinationUsdMinAmount": 12.86,
    //
<strong>    //     "destinationWeiAmount": "56797373",
</strong>    //     "destinationWeiMinAmount": "55093452",
    //
    //     "durationInMinutes": 5,
    //     "priceImpact": 3.29,
    //     "slippage": 0.03
    // }
    
    console.log(id);
    // This is the swap ID. It will be needed later for swap request.
    return data;
}
```

You can get more information about quote endpoint here: [Request Quote](https://dev-docs.rubic.exchange/docs/api-docs/request-quote)

## Retrieving Data to Execute a Transaction

To perform a token swap through Rubic API, we need to get the necessary data for the transaction.

**Endpoint:** `POST https://api-v2.rubic.exchange/api/routes/swap`

```javascript theme={null}
async function getSwapData() {
    const response = await fetch("https://api-v2.rubic.exchange/api/routes/swap", {
        method: "POST",
        headers: {
            "Content-Type": "application/json",
        },
        body: {
            "srcTokenAddress": "0x0000000000000000000000000000000000000000",
            "srcTokenAmount": "3",
            "srcTokenBlockchain": "COSMOS"
            "dstTokenAddress": "0x0000000000000000000000000000000000000000",
            "dstTokenBlockchain": "TRON",
            "referrer": "rubic.exchange",
            "fromAddress": "USER WALLET ADDRESS",
            "id": "ID FROM QUOTE STEP",
            "receiver": "RECEIVER ADDRESS"
          }
    });
    const result = await response.json();
    const { transaction } = result;
    console.log(transaction);
    // {
    //     "depositAddress": "cosmos1hgp84me0lze8t4jfrwsr05aep2kr57zrk4gecx",
    //     "amountToSend": "3"
    //     "exchangeId": "jz4flw7ub37tr78b",
    //     
    //     "extraFields": {        // can be null
    //        "name": "Memo",
    //        "value": "7799954959159693"
    //      }
    // },
    return result;
}
```

You can get more information about swap endpoint here: [Request Data](https://dev-docs.rubic.exchange/docs/api-docs/request-data)

## Executing a Transaction with the API Response Data

You should display the `depositAddress`, `amountToSend`, `exchangeId` and `extraFields` fields from the `transaction` object in your UI. The user should send amount to the received depositAddress from his wallet by himself.&#x20;

<Note>
  User should pass the extraFields.value field otherwise the transaction may fail.
</Note>