Your Salesforce API key can be obtained by logging into your Salesforce account and navigating to the Settings under your profile. Look for the ‘Reset My Security Token’ option under ‘My Personal Information’. If you need a new API key or cannot locate the existing one, use this option to reset it. Salesforce will then send a new security token to your registered email, which will serve as your API key, combined with your password. This key is essential for accessing Salesforce APIs and integrating with other services.