Do you mean to read/write bluetooth characteristics? I am not aware of one (I always just use the nRF Connect app on a phone).
Because for normal development work on windows we'd just recommend https://www.espruino.com/ide
I will stay with the nRF
When I scan Bluetooth on my windows - I can see and connect to the Espruino device ,
but can I read and write data , and maybe see the rssi ?