Summary of RSS feeds

I looking for and have not found a feed where I can:
1) Have several website that are monitored for new content
2) Display on my site a summary: Two or three sentences from the post, the title, and a link to the original post

The example that I really like is: https://feedtacoma.com/

On there they have say 30 sites that are monitored about the City of Tacoma, and it links to the new posts on a daily basis.

The plugins I have found pull in the whole articles. I don’t want this. I just want to be a portal to link to the real posts.

Any thoughts?

Thanks everyone!