It's here that you can find links to get more information about developing scripts and add-ins for Fusion. There are also many repositories of sample code written by Autodesk and also links to many community repositories where other developers are sharing their Fusion programs.
To get started using the Fusion API you should begin with the Fusion API documentation, which you can also easily access directly from within Fusion using the “Programming Interface” link in the Help menu, as shown below.
The documentation is always the first place you should go to learn about the API.
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