With just a few lines of code, all projects and developers can embed a cross-chain exchange between arbitrary assets within your app (mobile app, website, dApp, etc.) based on the deBridge protocol. You can make the deBridge widget part of your app and you’re fully free to customize colors, fonts, chains, and tokens according to your design and preferences.

Requirements

The widget is based on web technology, that’s why your app must support technology such as JavaScript, HTML, CSS or use webView to add the widget. You can use any type of framework for the web app. The launch of the widget is going on through iframe embedded on the page. The API integration is based on JavaScript. The following steps are needed to add the widget:

Connect js script to your app

<script src="https://app.debridge.com/assets/scripts/widget.js"></script>

Add an html element with a unique id
Generate js object with the description of the widget settings. You can use the builder of deSwap Widget for auto-generation js object.
Initialize deBridge.widget(initObject), where initObject contains the settings.

Initializing must be executed after connection from step 1.

Parameter	Type	Description
`element`	`string`	(mandatory) – Unique ID of the HTML element on the page
`v`	`string`	Widget version (possible value: `'1'`)
`mode`	`string`	Type of project (possible value: `'deswap'`)
`title`	`string`	Widget header
`width`	`number`	Width of the widget
`height`	`number`	Height of the widget
`inputChain`	`number`	ID of the input chain (possible values: `1`, `56`, `137`, `42161`, `43114`)
`outputChain`	`number`	ID of the output chain (same values as above)
`inputCurrency`	`string`	Address of the input token
`outputCurrency`	`string`	Address of the output token
`address`	`string`	Address of the receiver
`amount`	`string`	Amount to exchange
`lang`	`string`	Default language (possible values: `'en'`, `'fr'`, `'jp'`, `'ko'`, `'ru'`, `'vi'`, `'zh'`)
`styles`	`string`	Base64-encoded styles object
`theme`	`string`	Theme mode (possible values: `'dark'`, `'light'`)
`r`	`string`	Integrator referral code

Example

{   
  "element": "debridgeWidget",     
  "v": "1",   
  "mode": "deswap",
  "title": "deSwap",    
  "width": "600",   
  "height": "800",   
  "inputChain": "56",    
  "outputChain": "1",    
  "inputCurrency": "0x8ac76a51cc950d9822d68b83fe1ad97b32cd580d",    
  "outputCurrency": "0xdac17f958d2ee523a2206206994597c13d831ec7",    
  "address": "0x64023dEcf09f20bA403305F5A2946b5b33d1933B",    
  "amount": "10",    
  "lang": "en",    
  "mode": "deswap",    
  "styles": "eyJmb250RmFtaWx5IjoiQWJlbCJ9",    
  "theme": "dark",    
  "r": "3981"
} 

Styles

The styles field contains the fields:

{      
  appBackground: string,      
  appAccentBg: string,      
  chartBg:string,     
  primary: string,      
  secondary: string,      
  badge: string,      
  borderColor: string,      
  borderRadius: number,      
  fontColor:string,      
  fontColorAccent:string,      
  fontFamily: string    
}

HTML Example

<html>

<head>
  <script src="https://app.debridge.com/assets/scripts/widget.js"></script>
</head>

<body>
  <!DOCTYPE html>
  <html>

  <head>
    <meta charset="UTF-8">
    <title>Widget Example</title>
  </head>

  <body>
    <div id="debridgeWidget"></div>
    <script>
      const script = document.createElement("script");
      script.src = "https://app.debridge.com/assets/scripts/widget.js";
      script.onload = () => {
        console.log("✅ Widget script loaded!");

        if (window.deBridge) {
          window.deBridge.widget({
            "v": "1",

            "element": "debridgeWidget",
            "title": "",
            "description": "",
            "width": "600",
            "height": "800",
            "r": "31805",
            "supportedChains":
            {
              "inputChains": {
                "1": "all",
                "10": "all",
                "56": "all",
                "100": "all",
                "137": "all",
                "146": "all",
                "388": "all",
                "747": "all",
                "998": "all",
                "999": "all",
                "1088": "all",
                "1329": "all",
                "1514": "all",
                "2741": "all",
                "4158": "all",
                "5000": "all",
                "8453": "all",
                "32769": "all",
                "42161": "all",
                "43114": "all",
                "50104": "all",
                "59144": "all",
                "60808": "all",
                "80094": "all",
                "98866": "all",
                "7565164": "all",
                "245022934": "all"
              },
              "outputChains": {
                "1": "all",
                "10": "all",
                "56": "all",
                "100": "all",
                "137": "all",
                "146": "all",
                "388": "all",
                "747": "all",
                "998": "all",
                "999": "all",
                "1088": "all",
                "1329": "all",
                "1514": "all",
                "2741": "all",
                "4158": "all",
                "5000": "all",
                "8453": "all",
                "32769": "all",
                "42161": "all",
                "43114": "all",
                "50104": "all",
                "59144": "all",
                "60808": "all",
                "80094": "all",
                "98866": "all",
                "7565164": "all",
                "245022934": "all"
              }
            },
            "inputChain": 7565164,
            "outputChain": 42161,
            "inputCurrency": "11111111111111111111111111111111111111111",
            "outputCurrency": "0xaf88d065e77c8cc2239327c5edb3a432268e5831",
            "address": "",
            "showSwapTransfer": true, "amount": "",
            "outputAmount": "",
            "isAmountFromNotModifiable": false, "isAmountToNotModifiable": false, "lang": "en",
            "mode": "deswap",
            "isEnableCalldata": false, "styles": "e30=",
            "theme": "dark",
            "isHideLogo": false, "logo": "",
            "disabledWallets": [], "disabledElements": []
          });
        } else {
          console.error("❌ debridgeWidget not found on window");
        }
      };
      script.onerror = () => {
        console.error("❌ Failed to load widget script");
      };
      document.head.appendChild(script);
    </script>
    <div id="debridgeWidget"></div>
  </body>

  </html>

The widget is initialized asynchronously using:

const widget = await deBridge.widget(params);

Events

The widget object supports several event listeners that respond to specific actions. Each event can be registered using:

widget.on('eventName', (event, params) => {
    // Handle event logic here
});

Available Events

`needConnect`

Triggered when the widget requires a connection.

Example handler:

widget.on('needConnect', (widget) => {
  console.log('needConnect event', widget);
});

`order`

Triggered when an order is created.
Parameters:
- params.status: Order status.

Example handler:

widget.on('order', (widget, params) => {
  console.log('order params', params);
});

`singleChainSwap`

Triggered when a single-chain swap occurs.

Example handler:

widget.on('singleChainSwap', (widget, params) => {
  console.log('singleChainSwap params', params);
});

`bridge`

Triggered when a deport transaction occurs.
Parameters:
- params.status: Bridge status.

Example handler:

widget.on('bridge', (widget, params) => {
  console.log('deport event', widget, params);
});

`callData`

Triggered when call data for an order is required.

Example handler:

widget.on('callData', (widget, params) => {
  if (
    params.createOrderParams.takeChainId == 137 &&
    params.createOrderParams.takeTokenAddress == "0x2791..."
  ) {
    return { to: "0x...", data: "0x..." };
  }
  return null;
});

`inputChainChanged`

Triggered when the input chain is changed.

Example handler:

widget.on('inputChainChanged', (widget, params) => {
  console.log('inputChainChanged event', widget, params);
});

`outputChainChanged`

Triggered when the output chain is changed.

Example handler:

widget.on('outputChainChanged', (widget, params) => {
  console.log('outputChainChanged event', widget, params);
});

`inputTokenChanged`

Triggered when the input token is changed.

Example handler:

widget.on('inputTokenChanged', (widget, params) => {
  console.log('inputTokenChanged event', widget, params);
});

`outputTokenChanged`

Triggered when the output token is changed.

Example handler:

widget.on('outputTokenChanged', (widget, params) => {
  console.log('outputTokenChanged event', widget, params);
});

Methods

The widget object provides several methods to programmatically interact with it.

`disconnect()`

Disconnects the connected wallet in the widget.

Example usage:
widget.disconnect();

`changeInputChain(chainId)`

Changes the input chain to the specified chainId.

Example usage:
widget.changeInputChain(1);

`changeOutputChain(chainId)`

Changes the output chain to the specified chainId.

Example usage:
widget.changeOutputChain(10);

`changeInputToken(tokenAddress)`

Changes the input token using the given token address.

Example usage:
widget.changeInputToken('0x...');

`changeOutputToken(tokenAddress)`

Changes the output token using the given token address.

Example usage:
widget.changeOutputToken('0x...');

`setExternalEVMWallet(walletConfig)`

Connects an external EVM-compatible wallet.

Example usage:

widget.setExternalEVMWallet({
  provider: window.phantom?.ethereum,
  name: "Metamask",
  imageSrc: 'https://app.debridge.com/assets/images/dln-details/wallet/metamask.svg'
});

`setExternalSolanaWallet(walletConfig)`

Connects an external Solana-compatible wallet.

Example usage:

widget.setExternalSolanaWallet({
  provider: window.solana,
  name: "Phantom",
  imageSrc: 'https://app.debridge.com/assets/images/dln-details/wallet/phenom.svg'
});

`setReceiverAddress(address)`

Sets the receiver’s wallet address.

Example usage:
widget.setReceiverAddress('0x...');

`setAffiliateFee(feeConfig)`

Sets the affiliate fee for Solana and EVM networks.

Example usage:

widget.setAffiliateFee({
  solana: {
    affiliateFeePercent: '0.5',
    affiliateFeeRecipient: 'B5...',
  },
  evm: {
    affiliateFeePercent: '1',
    affiliateFeeRecipient: '0x...',
  }
});

The builder is available at https://app.debridge.com/widget and contains:

Widget settings fields
Widget preview
Field with source code for embedding in the application

Work Algorithm

Fill in the fields of widget settings to see your future widget. All field changes are updated in real time.
Once UI and other settings suit your requirements, you can just copy the source code to your project to embed the widget according to the “Widget embedding” section.

Overview

Widget

App

Smart Contract Integration

deBridge Widget

Requirements

Widget embedding

Widget object settings description

Styles

deBridge Widget events and methods

Widget Initialization

Events

Available Events

`needConnect`

`order`

`singleChainSwap`

`bridge`

`callData`

`inputChainChanged`

`outputChainChanged`

`inputTokenChanged`

`outputTokenChanged`

Methods

`disconnect()`

`changeInputChain(chainId)`

`changeOutputChain(chainId)`

`changeInputToken(tokenAddress)`

`changeOutputToken(tokenAddress)`

`setExternalEVMWallet(walletConfig)`

`setExternalSolanaWallet(walletConfig)`

`setReceiverAddress(address)`

`setAffiliateFee(feeConfig)`

deBridge Widget builder

Work Algorithm

​Requirements

​Widget embedding

​Widget object settings description

​Styles

​deBridge Widget events and methods

​Widget Initialization

​Events

​Available Events

​needConnect

​order

​singleChainSwap

​bridge

​callData

​inputChainChanged

​outputChainChanged

​inputTokenChanged

​outputTokenChanged

​Methods

​disconnect()

​changeInputChain(chainId)

​changeOutputChain(chainId)

​changeInputToken(tokenAddress)

​changeOutputToken(tokenAddress)

​setExternalEVMWallet(walletConfig)

​setExternalSolanaWallet(walletConfig)

​setReceiverAddress(address)

​setAffiliateFee(feeConfig)

​deBridge Widget builder

​Work Algorithm

Requirements

Widget embedding

Widget object settings description

Styles

deBridge Widget events and methods

Widget Initialization

Events

Available Events

`needConnect`

`order`

`singleChainSwap`

`bridge`

`callData`

`inputChainChanged`

`outputChainChanged`

`inputTokenChanged`

`outputTokenChanged`

Methods

`disconnect()`

`changeInputChain(chainId)`

`changeOutputChain(chainId)`

`changeInputToken(tokenAddress)`

`changeOutputToken(tokenAddress)`

`setExternalEVMWallet(walletConfig)`

`setExternalSolanaWallet(walletConfig)`

`setReceiverAddress(address)`

`setAffiliateFee(feeConfig)`

deBridge Widget builder

Work Algorithm