How do I request API Signature or Certificate credentials for my PayPal account?

Here’s how to request API Signature or Certificate credentials for your PayPal account:

  1. Log in to your PayPal Live or Sandbox account.
  2. Go to SettingsIcon Settings.
  3. Click My selling preferences.
  4. In the API access section, click Update.
  5. Under NVP/SOAP API integration, click Request API credentials.
    • If you have already generated an API Signature, then View API Signature appears. Click that option to view or remove your existing API Signature.
    • If you have already generated an API Certificate, then View API Certificate appears. Click that option to view or remove your existing API Certificate.
      • Note: If you are prompted to verify your PayPal account, then follow the on-screen instructions.
  6. Select one of the following options, then click Agree and Submit.
    • Request API Signature – Select for API Signature authentication.
    • Request API Certificate – Select for API Certificate authentication.
  7. PayPal generates your API credentials as follows:
    • API Signature credentials include an API Username, API Password, and Signature, which does not expire. These values are hidden by default for added security. Click Show/Hide to toggle them on and off. When finished, click Done.
    • API Certificate credentials include an API Username, API Password, and Certificate, which expires automatically after three years. Click Download Certificate to save the API Certificate to your desktop.