Ask HN: Experience building real-time integrations without official APIs?

I need to integrate with platforms that don’t provide official APIs. Another requirement is that these integrations need to connect in real-time with the other platforms without the delay going over 1 minute.

Does anyone have experience doing this? What were you integrating with, and how did you do it?

Your question is a bit under-specified. Like for a web app, no official API might mean it has an "internal" API between frontend and backend.

So yeah, what kind of platforms? And what exactly do you mean by no official API?

For example, we've scraped an interactive web site, where we had to use Selenium to simulate a user in order to fill out search boxes to extract all the data.

Is that the kind of stuff you had in mind?