Most people set up an AI agent and immediately start thinking about multi-agent architectures. Orchestrators, specialist swarms, automated pipelines. That's Level 4 thinking applied to a Level 1 setup, and it's how you end up with a fleet of agents shipping garbage at scale.
Hermes Agent by Nous Research (160K+ stars, fastest-growing open-source agent of 2026) is built for exactly this kind of progressive scaling. It's self-hosted, self-improving, stores everything locally in SQLite, and supports multi-agent orchestration out of the box as of v0.6.0.
But the framework below isn't Hermes-specific. It applies to any agent system. The tool doesn't matter as much as the progression.
Here are the four levels, what each one looks like in practice, and how to know when you're actually ready to move up.
First: What Hermes Agent Is
