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

# Custom fee

## Setup widget referral

If you are a **unique referral** you can specify your **referral** as a parameter in the widget's creator function `createSwapWidget`

***

To pass the **referral** we have a `widgetReferral` configuration parameter

You can do it in a similar way:

***

```typescript theme={null}
createSwapWidget("#test", {
    widgetReferral: "TEST_WIDGET_REFERRAL",
    otherConfig...,
});
```

## Setup widget custom fees

If you are an **partner** of `swap.coffee` and have a **unique referral** you can pass custom fee settings directly into the widget configuration

> * You can read more about the concept of **partner custom commissions** 👉 [**here**](https://docs.swap.coffee/technical-guides/aggregator-api#custom-fees-for-partners-only)

***

To pass the **referral** we have a `customFeeSettings` configuration parameter

You can do it in a similar way:

***

```typescript theme={null}
createSwapWidget("#test", {
    widgetReferral: "TEST_WIDGET_REFERRAL",
    customFeeSettings: {
        fixed_fee: 'value',
        percentage_fee: 0,
        min_percentage_fee_fixed: 'value',
        max_percentage_fee_fixed: 'value'
    },
    otherConfig...,
});
```

* So, passing instead of `TEST_WIDGET_REFERRAL` your **referral** the widget will recognize your **referral** `(only if it is valid)` and share the profit with the widget integrator.

**Conclusion**

To receive **profit** from the protocol, you must have an `ACTIVE referral` and complete the custom `fee settings`.

> 💡 **Tip**: If you are interested in creating a unique referral for your integration, contact 👉 [**Lizard**](https://t.me/lizard_tail).