Update README.md

Author: paperspace-philip

README.md

@@ -22,6 +22,11 @@ pip install --pre c63a5cfe-b235-4fbe-8bbb-82a9e02a482a-python
 
 ## Usage
 
+The GradientAI SDK provides client for:
+* DigitalOcean API
+* GradientAI Serverless Inference
+* GradientAI Agent Inference
+
 The full API of this library can be found in [api.md](api.md).
 
 ```python