base endpoint url for creating a new order Futres trade

Hi,
I would like to know what’s the base endpoint url for creating and deleting new orders.
In the binance future documentation, they just provide this POST /fapi/v1/order but I wanna know the base url. Also I would like to know how to pass the api-key and secret key with the order for authentication.
that’s the binance documentation Im following:
https://binance-docs.github.io/apidocs/futures/en/#get-current-multi-assets-mode-user_data

The base URL is displayed at
https://binance-docs.github.io/apidocs/futures/en/#general-api-information

You can also take advantage of this repo GitHub - binance/binance-signature-examples: Examples of binance hmac hashing to understand how the API Keys are used (and signature).