I wrote a tampermonkey script(1) so you don't have to navigate away and it shows you summary and takeaways right inside hacker news (2) div boxes, but i was using kagi.com/v1/summarization for the api which is now dead.

But this is the perfect fit for it as I see you have created services for extraction and summarisation which can be easily self hosted and turned into apis.

(1) https://gist.github.com/san-kumar/b3604ca40905556b4135fee64e... (2) https://imgur.com/a/kRUkn6g