Javascript API for Office - for commercial use ?

Hi,

My question is pretty simple, I went through some APIs that generates Word/PDF documents through a web application using Javascript. However, I wonder if the Javascript API for Office can be used commercially?

https://msdn.microsoft.com/en-us/library/office/fp142185.aspx

https://msdn.microsoft.com/en-us/library/office/fp160953.aspx

Thanks!