To request API Signature or Certificate credentials for your PayPal account:

1._Log in to your PayPal Live or Sandbox account.

2. Go to your Account Settings.

3. In the “API access” section, click Update.

4. Under “NVP/SOAP API integration (Classic),” click Manage API credentials.

  • 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.

5. 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.

6. 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.