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Step-by-Step Integration


  • Does your shopping cart ask you to set permissions on your PayPal account and provide you their PayPal shopping cart API username?

    If so, the shopping cart username will look like this: username_api1.shoppingcart.com. Follow these steps:

    1. Log in to your PayPal Business account.
    2. Click the My Account tab.
    3. Click the Profile tab. If you haven't already done so, you need to verify your account before requesting API credentials.
    4. Click Request API credentials under Account information.
    5. Click Set up PayPal API credentials and permissions under Option 1.
    6. Click Grant API Permissions.
    7. Enter the API username provided by your shopping cart.
    8. Select all 4 boxes to activate the required APIs.
    9. Click Submit.
  • Does your shopping cart ask for an API username, password, or signature?

    You'll need to create an API username for PayPal that's different from your shopping cart's username. Follow these steps:

    1. Log in to your PayPal Business account.
    2. Click the My Account tab.
    3. Click the Profile tab. If you haven't already done so, you need to verify your account before requesting API credentials.
    4. Click Request API credentials under Account information.
    5. Click Set up PayPal API credentials and permissions under Option 1.
    6. Click Request API Credentials.
    7. Click Request API signature.
    8. Click Agree and Submit.
    9. Copy and paste the API username, password, and signature into your shopping cart's configuration or administration screen.
    10. Complete the process by following your shopping cart's final steps.
  • Does your shopping cart ask you to upload a certificate from PayPal?

    Follow these steps:

    1. Log in to your PayPal Business account.
    2. Click the My Account tab.
    3. Click the Profile tab. If you haven't already done so, you need to verify your account before requesting API credentials.
    4. Click Request API credentials under Account information.
    5. Click Set up PayPal API credentials and permissions under Option 1.
    6. Click Request API Credentials.
    7. Click Agree and Submit.
    8. After you receive your API certificate, download it to your computer.
    9. Enter the API username and password into your shopping cart's configuration or administration screen.
    10. Complete the process by following your shopping cart's final steps.
  • Does your shopping cart ask for a username, partner, vendor, and password?

    Follow these steps:

    1. Log in to your PayPal Business account.
    2. Click the My Account tab.
    3. Click the Profile tab. If you haven't already done so, you need to verify your account before requesting API credentials.
    4. Click Request API credentials under Account information.
    5. Click Set up Payflow Pro API access under Option 2.
    6. Use the information to enter the username, partner, vendor, and password in your shopping cart's configuration or administration screen.

If you have questions about integration, please email Merchant Technical Services.