title: How to monitor and validate response data of python REST app hosted at gcp with kubernetes
body: <p>At my company we have a Python app which exposes rest APIs. I need to periodically check if APIs are functioning and return the correct data in their responses.
  So far I managed to configure Stackdriver uptime Checks - to check the statuses, 
  But how, for example can I check if response "data" property is not an empty array (empty array is not valid)</p>
  
  <pre><code>{data:[]} //not valid - should have at least 1 item
  </code></pre>
  
  <p>Is uptime checks a good tool for it?</p>