I have a question about Application Programming Interface and whether this is possible.

I wont name the alt coin to prevent shills

I was looking at an Alt coin startup that claims it extracts data from another DEX like platform (of which it probably competes with so there is no co-operation between the two) in real time and can filter that data to allow users to make the best buys.

I`m not a programmer but I would assume this site would require a data feed from the 1st site to do this? (this source site is unique so not like a DOW market index)

Its like me saying I’m creating a website that filters vitamin pills on Amazon in real-time, but short of looking on the webpage & manually keying the info in how can I do this without a data feed from the source site?

I asked this question to them & they replied Application Programming Interface.

Is this possible or BS?