Hi @maxim.osipov
Thanks for your patience here, I was able to get some feedback from the product team, and they made a comment that I missed, and it is that when adding a new external contact via API, you can pass the value of the ID in your request body, and Zoom will generate one if you do not use the parameter.
They also mentioned that both scenarios that you brought up are not in our roadmap but might be able to add them in the future but it will take some time
- Possibility to update via the external ID (id field of contact)
- Possibility to search external contacts by the phone number