title: API key vs. Access Token
body: <p><a href="https://developer.paypal.com/webapps/developer/docs/classic/adaptive-payments/integration-guide/APIntro/" rel="nofollow">Paypal Adaptive Payments Intro</a></p>
  
  <p><a href="https://developer.paypal.com/webapps/developer/docs/integration/direct/make-your-first-call/" rel="nofollow">Paypal API intro</a></p>
  
  <p>What is the difference is between an API key and an Access Token? They both seem to work as "passwords" for the paypal communications.</p>
  
  <p>I'm running the code on the paypal API intro(using curl in PHP, which I'm also just starting to understand), and I'm not sure how to get from that the the paypal adaptive payments stuff. I'm having trouble figuring out how I call "Adaptive Payments" in my code. Do I actually put that in there somewhere or is it implied when I call for multiple payments with one transaction?</p>