Great, so how do you know this stuff works? Did you evaluate it against other approaches? How do you know it's actually reliable?

The Vercel team had some interesting findings[1]:

> In 56% of eval cases, the skill was never invoked. The agent had access to the documentation but didn't use it.

Others had different findings for commonly accepted practices[2], some you may have adopted from reading documentation, which surely didn't come from influencers.

And yet others swear by magical Markdown documents[3].

So... who is the ultimate authority on what actually works, and who is just cargo culting the trendy practice of the week? And how is any of this different from what was being done a few years ago?

[1]: https://vercel.com/blog/agents-md-outperforms-skills-in-our-...

[2]: https://arxiv.org/abs/2602.11988

[3]: https://soul.md/