What are the open APIs for working with data on discounts in retail chain stores and do they exist at all?

Question

API

Actually the question)
There was an idea for the project, I want to implement it.
I don't want to parse everything hard.

Answer 1

None. Moreover, it is not a fact that this information is in principle freely available.
It seems to me that you can try to start with large networks by sending requests to their marketing departments, but there is a good chance of running into a question from the "who are you" series.

Answer 2

https://www.programmableweb.com/api/retailmenotcom...
most likely no
business model