Hi

please i try to configuer api in grand 4.40 so:
01. i set api enables in appsetting
02. create an api user in admin
03. create an token as this pots >> http://docs.grandnode.com/web-api

now i need to know where i can add this token in code i can use it in postman ? i hope if i can have full example

Yes, you can use it in Postman.

Examples can be found here (for example operations with products):
http://docs.grandnode.com/operations-with-products

And you use generated token in Auth Type field.