title: Slack App, token for Web API
body: <p>For our Slack workspace I am building an app that will use the Web API to send and update messages. </p>
  
  <p>However, while the app is installed in our workspace I cannot find the token needed to authenticate my Web API requests. </p>
  
  <p>How can I authenticate an App to the Web API ?</p>
  
  <p>Thanks</p>