Hermes Agent popped up on my radar a few weeks ago, and after digging through the GitHub repo (37.5k stars, MIT license, built by Nous Research), I realized it does something most AI agents don't: it gets better the more you use it. Not in some vague "the model improves" sense — it literally builds skills from your interactions, remembers what worked, and refines those skills over time. That alone makes it worth a look.