The purpose of this ticket is to document our interest in this feature as a customer and be notified if this feature is released.
Currently, when developing a custom connector, there is no way to restrict access to a custom SDK in development.
Business Case: in developing a a custom connector, especially one based off a connector in the github repo, it's typical for us to have a lot of "test" connectors. It's also nice to have them just for reference. But because any connector is immediately "live" and accessible by all recipes, this creates a cluttered environment for our recipe developers who may use the wrong connector.
Workato already has a way of handling a deleted connector used in a recipe. Disabling one could have a similar effect.