If yes, could you share the endpoint to it?
Hi @Jack Conroy
You can find Deal-related endpoints here - to create or update Deal data. And to add or edit Deal Fields, you can find endpoints here.
If you are looking for the API key of a specific existing custom field on your account, you can check it under Company Overview - Data fields - under ... for every field you can find the API key to copy.
Yes. This is a pretty standard action available with Make/Integromat or Zapier.