OneAgent and ActiveGate version 1.299 are the last versions supporting OneAgent and ActiveGate Extensions 1.0 framework. You can continue using Extensions 1.0 if you stay at OneAgent or ActiveGate version 1.299. Note that this means you'll be using an unsupported Python version 3.8. We strongly recommend migrating your extensions to the latest Extensions 2.0 framework.
For more information, see General guidance and how to migrate.
The extensions How-to topics guide you through the key concepts of extension development with examples and working code snippets to facilitate your own development.