Notification / Warning of approaching API rate limits

Please give a quick overview of your product feature request or feedback and note who in your org is affected by this issue [ex. agents, admins, customers, etc.]. (2-3 sentences)

Would love to have notifications push a warning BEFORE you hit the rate limit for Zendesk's APIs or the ability to set up external monitoring tools would be a huge win and help prevent service interruptions for teams leveraging the Zendesk APIs.

What problem do you see this solving? (1-2 sentences) 

The additional detail in the API Dash, while helpful, remains a reactive solution. Sending a notice when we're approaching the limit OR enabling us to hook up other monitoring tools (e.g., DataDog, PagerDuty, etc) to notify us is a necessity to us really leveraging them in earnest.

When was the last time you were affected by this lack of functionality, or specific tool? What happened? How often does this problem occur and how does this impact your business? (3-4 sentences)

For more clarity: we have clear opportunities to reduce effort internally or for our customers using the API, but we have to weigh the need to monitor its behaviour manually against the benefits of the implementation. As a result we often have to choose less impactful solutions in order to ensure lots of space for the calls of our existing solutions. This is something we are dealing with at least once a quarter.

Are you currently using a workaround to solve this problem? (If yes, please explain) (1-2 sentences)

No. 

What would be your ideal solution to this problem? How would it work or function? (1-2 sentences)

Ideally I'd love to monitor this as part of our existing tooling (i.e. third party) but even the ability to schedule an email or push a slack notification to the responsible team at a particular % of use or error threshold would be a huge improvement over current state.