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alfetopito merged 2 commits into from
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docs: clean up widget pages and document widget-react #642

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871cb3d
docs: clean up widget pages and document widget-react
raq0x Jul 9, 2026
b9c9e5a
fix deprecated widget parameters
raq0x Jul 15, 2026
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31 changes: 6 additions & 25 deletions docs/cow-protocol/integrate/widget.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ The CoW Widget is the fastest way to integrate CoW Protocol's trading functional

## Overview

The CoW Widget is a ready-to-use React component that provides the full CoW Swap trading experience. It's perfect for projects that want to add trading functionality quickly without building a custom interface from scratch.
The CoW Widget is a ready-to-use component that provides the full CoW Swap trading experience. It's perfect for projects that want to add trading functionality quickly without building a custom interface from scratch.

## Key Features

Expand All @@ -25,8 +25,8 @@ const widgetContainer = document.getElementById('cowswap-widget')

const params: CowSwapWidgetParams = {
appCode: 'YOUR-APP-NAME', // Required: identifies your app
width: 600,
height: 640,
width: '600px',

@Danziger Danziger Jul 14, 2026 •
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I think both of them are marked as deprecated. If you want the closest non-deprecated equivalent, it would be:

  rootStyle: {
    width: "600px",
    height: "640px",
  }

You can play around with the different options here: https://widget.cow.fi/

height: '640px',
sell: { asset: 'USDC' },
buy: { asset: 'WETH', amount: '0.1' },
theme: 'light', // 'light' | 'dark' | custom theme object
Expand All @@ -46,6 +46,8 @@ createCowSwapWidget(widgetContainer, { params })
npm install @cowprotocol/widget-lib
```

Building with React? Use [`@cowprotocol/widget-react`](https://www.npmjs.com/package/@cowprotocol/widget-react) instead - it wraps the widget as a React component.

## Configuration Options

The widget supports extensive customization:
Expand All @@ -56,28 +58,7 @@ The widget supports extensive customization:
- **Token lists**: Use custom token lists
- **Wallet integration**: Connect to your app's wallet or standalone mode
- **Event handling**: Listen to trading events and notifications

## Example with Custom Theme

```typescript
import { createCowSwapWidget, CowSwapWidgetPalette } from '@cowprotocol/widget-lib'

const customTheme: CowSwapWidgetPalette = {
baseTheme: 'light',
primary: '#00ff85',
background: '#f7f7f7',
paper: '#1a4435',
text: '#ffffff',
}

const params = {
appCode: 'YOUR-APP-NAME',
theme: customTheme,
// ... other params
}

createCowSwapWidget(widgetContainer, { params })
```
- **And more**: Slippage limits, token pair constraints, custom sounds and images

@Danziger Danziger Jul 14, 2026

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If it's not already lined on this page, it might be good to add a link to https://widget.cow.fi/


## When to Use the Widget

Expand Down
58 changes: 45 additions & 13 deletions docs/cow-protocol/tutorials/widget/widget.md
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@ import { createCowSwapWidget, CowSwapWidgetParams } from '@cowprotocol/widget-li
const widgetContainer = document.getElementById('cowswap-widget')

const params: CowSwapWidgetParams = {
appCode: 'NAME-OF-YOU-APP', // Add here the name of your app. e.g. "Pig Swap"
appCode: 'NAME-OF-YOUR-APP', // Add here the name of your app. e.g. "Pig Swap"
width: '600px',
height: '640px',
sell: { asset: 'DAI' },
Expand All @@ -41,17 +41,46 @@ const params: CowSwapWidgetParams = {
createCowSwapWidget(widgetContainer, { params })
```

## React

If your app is built with React, use the [`@cowprotocol/widget-react`](https://www.npmjs.com/package/@cowprotocol/widget-react) wrapper instead. It renders the same widget as a React component and accepts the same `CowSwapWidgetParams`:

```bash
yarn add @cowprotocol/widget-react
```

```bash
npm install @cowprotocol/widget-react
```

```tsx
import { CowSwapWidget, CowSwapWidgetParams } from '@cowprotocol/widget-react'

const params: CowSwapWidgetParams = {
appCode: 'NAME-OF-YOUR-APP', // Add here the name of your app. e.g. "Pig Swap"
width: '600px',

@Danziger Danziger Jul 14, 2026

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Same as above.

height: '700px',
tradeType: 'swap',
}

function App() {
return <CowSwapWidget params={params} onReady={() => console.log('Widget ready')} />
}
```

All configuration described in the rest of this guide applies to the React component as well.

## App key

You must specify the `appCode` parameter when initializing the widget. This parameter is used to identify the source of
orders.
The key must be a UTF8 string of up to 50 chars.
It will be a part of orders meta-data, see more in
the [CoW Protocol Docs](https://docs.cow.fi/front-end/creating-app-ids/create-the-order-meta-data-file/appcode).
the [app data docs](/cow-protocol/reference/core/intents/app-data).

## Partner fee

You may participate in the Partner Fee program to collect fee on [Market order](https://docs.cow.fi/cow-protocol/concepts/order-types/market-orders) trades executed by your users through the Widget by
You may participate in the Partner Fee program to collect fee on [Market order](/cow-protocol/concepts/order-types/market-orders) trades executed by your users through the Widget by
adding the following parameter to your Widget:

```typescript
Expand All @@ -75,7 +104,7 @@ This configuration will apply a partner fee for all networks and trade types (sw

Both `bps` and `recipient` can be set for different chains and different trade types (swap/limit/advanced).

Bellow you can see the `partnerFee` configuration variations:
Below you can see the `partnerFee` configuration variations:

```typescript
import { PartnerFee, SupportedChainId, TradeType } from '@cowprotocol/widget-lib'
Expand Down Expand Up @@ -154,6 +183,8 @@ For example, you can define different fees for different assets:
```typescript
import { createCowSwapWidget, CowSwapWidgetParams, CowEventListeners, CowEvents } from '@cowprotocol/widget-lib'

const container = document.getElementById('cowswap-widget')

let updateParams = null

const recipient = '0x0000000000000000000000000000000000000000'
Expand Down Expand Up @@ -304,7 +335,7 @@ Paste the snippet into **RAW JSON params** → open the **Swap** form → check
## Wallet provider

You can pass the wallet provider from your application to seamlessly use the widget as part of your application.
Also, you can not specify the provider, in this case the widget will work in standalone mode with the ability to connect
Alternatively, you can omit the provider, in this case the widget will work in standalone mode, letting users connect
any wallet supported in CoW Swap.

A provider must comply with [EIP-1193](https://eips.ethereum.org/EIPS/eip-1193) and implement the interface:
Expand All @@ -331,7 +362,7 @@ An example of connecting a widget to Rabby Wallet or Metamask:
import { createCowSwapWidget, CowSwapWidgetParams } from '@cowprotocol/widget-lib'

createCowSwapWidget(document.getElementById('cowswap-widget'), {
params: { appCode: 'NAME-OF-YOU-APP' }, // Add here the name of your app. e.g. "Pig Swap"
params: { appCode: 'NAME-OF-YOUR-APP' }, // Add here the name of your app. e.g. "Pig Swap"
provider: window.ethereum, // <-------
})
```
Expand Down Expand Up @@ -415,7 +446,7 @@ const theme: CowSwapWidgetPalette = {
success: '#19ff64',
}
const params: CowSwapWidgetParams = {
appCode: 'NAME-OF-YOU-APP', // Add here the name of your app. e.g. "Pig Swap"
appCode: 'NAME-OF-YOUR-APP', // Add here the name of your app. e.g. "Pig Swap"
theme,
}

Expand All @@ -428,7 +459,7 @@ Try it yourself: <https://widget.cow.fi>.

## Custom tokens

CowSwap uses the [token lists standard](https://tokenlists.org), which allows flexible and decentralized management of assets for trading.
CoW Swap uses the [token lists standard](https://tokenlists.org), which allows flexible and decentralized management of assets for trading.
You can manage the list of tokens in CoW Swap UI:

![Tokens management](/img/tutorials/widget-tokens-management.png)
Expand Down Expand Up @@ -463,7 +494,7 @@ import { createCowSwapWidget, CowSwapWidgetParams, TokenInfo } from '@cowprotoco

const container = document.getElementById('cowswap-widget')

const customTokens: TokenInfo = [
const customTokens: TokenInfo[] = [
{
chainId: 1,
address: '0x69D29F1b0cC37d8d3B61583c99Ad0ab926142069',
Expand Down Expand Up @@ -534,6 +565,8 @@ To avoid double display of notifications, enable the `disableToastMessages` opti
```typescript
import { createCowSwapWidget, CowSwapWidgetParams, CowEventListeners, CowEvents } from '@cowprotocol/widget-lib'

const container = document.getElementById('cowswap-widget')

const params: CowSwapWidgetParams = { appCode: 'YOUR_APP_ID' }

const listeners: CowEventListeners = [
Expand All @@ -559,14 +592,13 @@ import { createCowSwapWidget, CowSwapWidgetParams } from '@cowprotocol/widget-li
const container = document.getElementById('cowswap-widget')

const params: CowSwapWidgetParams = {
appCode: 'NAME-OF-YOU-APP', // Add here the name of your app. e.g. "Pig Swap"
logoUrl: 'YOUR_LOGO_URL',
appCode: 'NAME-OF-YOUR-APP', // Add here the name of your app. e.g. "Pig Swap"
}

const updateWidget = createCowSwapWidget(container, { params })
const { updateParams } = createCowSwapWidget(container, { params })

// Update the widget
updateWidget({
updateParams({
...params,
theme: 'dark', // <- Change theme to dark
hideNetworkSelector: true, // <- Hide the network selector
Expand Down
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