title: IBM Watson NLU: How to determine remaining credits via API Endpoint?
body: <p>I am using a Free plan for IBM Watson Natural Language Understanding. I'd like to check the remaining credits of my plan for the given resource with a single API call.</p>
  <p>I've seen something like <a href="https://cloud.ibm.com/apidocs/enterprise-apis/billing-unit#get-credit-pools" rel="nofollow noreferrer">Get credit pools</a> in the IBM Cloud docs, but I am not able to determine my <code>billing_unit_id</code> which is required to make the request. Is this even doable for a Free plan? If so, could you help me with where to find a <code>billing_unit_id</code> or redirecting me to another API Endpoint (that hopefully has a cURL example) so I could check remaining credits of my NLU instance?</p>