Hi, I have developed such endpoints previously.
Rather than depend on any PHP framework I will say go with core PHP code.
Why core PHP, because you are trying to create a endpoint whoes job is just to work under secure path and server data in ReastFul way. So there is no need to deal with bunch of framework files.
Trust me this way your API will be real fast and front end application can manage this things very easily
I have exp in front end too in angular, react
if you like my view lets discuss more in chat
thanks