Standard profiles implementation are available as part of API.

Use com.nomagic.uml2.MagicDrawProfile to access "MagicDraw Profile" elements

Use com.nomagic.uml2.StandardProfile to access "StandardProfile" elements

Use com.nomagic.uml2.ValidationProfile to access "Validation Profile" elements 


MagicDraw plugins (like SysML) can also expose implementations of profiles. Check their APIs.