On the Statuspage website the REST APIs are listed as a feature in public page plans. However, in the private page plans it ist not.
Then I read in this article that the status API is available on private pages.
This made me question, whether the manage API is available on private pages as well.
This is Jesse from the Statuspage support team. Welcome to the community and thanks for the question around the manage API.
The manage API is available on all page types, including private pages. It is a bit interesting to not see it called out specifically on the pricing but it is available. Hopefully that clears it up for you but let me know if you need any additional clarification.