Exist Any Private or Public API for Particular Keyword Metrics?

[hazelaudrin 0]

Greetings to all.

At the moment, our developer team at the Amazon marketing services company is investigating ways to enhance users' keyword experiences. Any public APIs that we can use to track certain keyword metrics, such as search volume, position, trend, overall or day-to-day performance, etc., do you happen to know of them? Exist any paid or private APIs that we should be authorized to use? We would really value your opinion.