users endpoint, you can get a list of your company’s users, this includes their id, email address, full name, and a link to their profile picture.
You can obtain the company_id from MyKinsta > username > Company settings > Billing details.
The company_id is also shown in the URL in MyKinsta, for example in the URL https://my.kinsta.com/?idCompany=bdd25d71-5706-4890-870f-1adda17c505d the company_id is bdd25d71-5706-4890-870f-1adda17c505d.