How to trigger specific RSS feed entries with HA

I have mainly used IFTTT to automate RSS feeds to email or as Telegram message. Since IFTTT will change to a subscription model, I wanted to figure out, if HA can do the same thing?
I know there is a feedreader integration, but how to I get it to only trigger on one or more specific keywords that appear in a feed? Or is there a better way to solve this with HA?

The way I would approach this is to create an automation that gets triggered by a new entry and then use a condition to check if you’re interested in this particular entry. Maybe a template condition with a regex_search function to check for words in the text.

Also moving things off of IFTTT, I was looking for a way to do this with a severe weather event RSS feed, only triggering notifications if the feed item content matched certain keywords (e.g. Tornado Warning and not just Freeze Warning). I found this code which helped me see a possible alternative approach using API calls instead:

I know it doesn’t specifically answer the original question but perhaps it will be helpful.