Lovable and Xero integration: Step-by-Step Guide 2025

 

Prerequisites

 

• You must have a Xero developer account with your API credentials (Client ID, Client Secret, and Redirect URI).
• Have your Lovable project open in the Lovable code editor.

 

Updating package.json for Dependencies

 

• Locate or create the file package.json in your project directory.
• Add the following snippet to declare the dependency for Xero. This informs your project to include the Xero integration library. (Since Lovable doesn’t have a terminal, manually add this dependency inside the code file.)

• 
  {
    "dependencies": {
      "xero-node": "^5.7.0"
    }
  }
        

 

Creating a Xero Integration File

 

• Create a new TypeScript file named xeroIntegration.ts in your project’s directory.
• Paste the following code snippet into xeroIntegration.ts. This file initializes the Xero client and defines functions to generate an authentication URL and to set the access token.

• 
  import { XeroClient } from 'xero-node';
  
  const xero = new XeroClient({
    clientId: process.env.XEROCLIENTID,
    clientSecret: process.env.XEROCLIENTSECRET,
    redirectUris: [process.env.XEROREDIRECTURI],
    scopes: 'openid profile email accounting.transactions'.split(" "),
  });
  export async function getXeroAuthUrl(): Promise<string> {
    const authUrl = await xero.buildConsentUrl();
    return authUrl;
  }
  export async function setXeroAccessToken(authResponse: any): Promise<void> {
    await xero.setAccessToken(authResponse.access_token);
  }
        

  
  

 

Integrating Xero Integration in Your Main Application

 

• Open your main Lovable project file (for example, app.ts or the primary entry point).
• Import and use the functions from xeroIntegration.ts to handle the authentication flow with Xero. Insert the following code snippet where you manage authentication logic:

• 
  import { getXeroAuthUrl, setXeroAccessToken } from './xeroIntegration';
  
  // Example function to redirect user for Xero authentication
  async function redirectToXeroAuth() {
    const url = await getXeroAuthUrl();
    // Replace this with your method to redirect the user in Lovable
    console.log('Redirect to:', url);
  }
  // Example function to handle Xero callback response
  async function handleXeroCallback(authResponse: any) {
    await setXeroAccessToken(authResponse);
    console.log('Xero authentication successful');
  }
  // Call redirectToXeroAuth or handleXeroCallback as needed within your app flow
        

  
  

 

Storing and Managing API Credentials

 

• Since Lovable doesn’t offer a terminal to manage environment variables, create a new file named env.ts to store your Xero credentials temporarily.
• Paste the following code into env.ts:

• 
  export const XEROCLIENTID = 'your-client-id';
  export const XEROCLIENTSECRET = 'your-client-secret';
  export const XEROREDIRECTURI = 'http://your-app-url/callback';
        

• Next, update xeroIntegration.ts to import these credentials instead of using process.env. Modify the top of the file as follows:

• 
  import { XeroClient } from 'xero-node';
  import { XEROCLIENTID, XEROCLIENTSECRET, XEROREDIRECTURI } from './env';
  
  const xero = new XeroClient({
    clientId: XEROCLIENTID,
    clientSecret: XEROCLIENTSECRET,
    redirectUris: [XEROREDIRECTURI],
    scopes: 'openid profile email accounting.transactions'.split(" "),
  });
        

  
  

 

Testing the Integration

 

• Simulate the Xero authentication flow by invoking redirectToXeroAuth() or handleXeroCallback() from your main application file.
• Check the Lovable project’s console output to verify that the authentication URL is generated and, if applicable, that the access token is set successfully.
• If Lovable does not support direct HTTP redirects, adjust the redirection logic to match your project’s workflow.