There are no APIs available, but the product is said to be compatible with a very high number of applications. You need to visit the website listed below to access the compatibility database search. Use the available form and check for your application. If it's not there, then you can't use it, but contact the developers and they should give you a response to this inquiry.
Database search: http://www.dessci.com/en/products/mathtype/works_with.asp