Hi dimpledevadasmcnepr, welcome to Thunkable! 
Be sure to check out How to ask Great Questions v2.0, the Community Guidelines, and our Getting Started Guide to make the best of your Thunkable Community experience!
In our docs you can find more information about Web API blocks: Web APIs Blocks | Thunkable Docs
Do you have a specific API that you could use?
Here is an example