The following changes must be made when migrating from v6.0 to v6.1.

## Changes in `/swap` and `/quote` responses

### Structural updates

- The `protocols[][][]` structure remains, but the format of protocol data has changed.
- `fromTokenAddress` and `toTokenAddress` have been removed. Instead, a single `token` field is used at a higher level.

### Changed and renamed parameters

- `fromTokenAddress` → Removed (source token is now referenced at the top level).

- `toTokenAddress` → Removed (destination is now handled via `dst`).

- `name` → Moved inside protocols array within `swaps`.

- `part` → Now nested inside `swaps` and `protocols`.

Compare the old version of that part of response with a new one below.

### Old response example

```json
"protocols": [
  [
    [
      {
        "name": "UNISWAP_V2",
        "part": 2,
        "fromTokenAddress": "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
        "toTokenAddress": "0x2260fac5e5542a773aa44fbcfedf7c193bc2c599"
      },
      {
        "name": "UNISWAP_V4",
        "part": 2,
        "fromTokenAddress": "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
        "toTokenAddress": "0x2260fac5e5542a773aa44fbcfedf7c193bc2c599"
      },
      {
        "name": "SUSHI",
        "part": 4,
        "fromTokenAddress": "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
        "toTokenAddress": "0x2260fac5e5542a773aa44fbcfedf7c193bc2c599"
      },
      {
        "name": "UNISWAP_V3",
        "part": 6,
        "fromTokenAddress": "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
        "toTokenAddress": "0x2260fac5e5542a773aa44fbcfedf7c193bc2c599"
      },
      {
        "name": "UNISWAP_V3",
        "part": 86,
        "fromTokenAddress": "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
        "toTokenAddress": "0x2260fac5e5542a773aa44fbcfedf7c193bc2c599"
      }
    ],
  //...
  ]
]
```

### New response example

```json
"protocols": [
    {
      "token": "0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
      "hops": [
        {
          "part": 62.5,
          "dst": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
          "fromTokenId": 0,
          "toTokenId": 1,
          "protocols": [
            {
              "name": "UNISWAP_V4",
              "part": 1
            },
            {
              "name": "CURVE_V2_TRICRYPTO_NG",
              "part": 1
            },
            {
              "name": "UNISWAP_V3",
              "part": 1
            },
            {
              "name": "UNISWAP_V2",
              "part": 3
            },
            {
              "name": "UNISWAP_V3",
              "part": 5
            },
            {
              "name": "UNISWAP_V3",
              "part": 20
            },
            {
              "name": "FLUID_DEX_T1",
              "part": 69
            }
          ]
        }
      //...
      ]
    }
  ]
```

For full schemas, see [Swagger documentation for the `/swap` and `/quote` endpoints](../methods/swagger.md).

:::info
If you disabled `includeProtocols`, change the version to a newer one. No additional actions are required.
:::