Agent Systems
Essays by Serhii Kravchenko: building with agent systems as a non-technical founder. Process, mindset, and the practice that keeps it steady.
-
What my MCP server actually did vs what the docs promised
A field report from a live MCP connector: what the protocol documentation promised, what the server actually did, and the marker-string test that settles the difference.

-
How to measure SEO edits without fooling yourself
Clicks are falling for everyone, declined pages rebound on their own, and your dashboard takes the credit. One day of adversarial design review: five measurement ideas died, and a better one survived.

-
What an AI Site Manager Found Reading All 884 Pages of One Site
An AI agent read a real 884-page site end to end and produced 203 evidence-backed proposals. Then its own refutation pass cut the biggest number nearly in half. A case study in…

-
My Agent Isn’t Autonomous. Neither Was the One That Broke Into Hugging Face.
The first runaway agent did not rebel: its humans disabled the brakes and then stopped watching. A close read of the Hugging Face incident, and the miniature twin of every one of…

-
The Scooter and the Sports Car
Everything I ship runs on one agent system I started half a year ago. Chat is a scooter; a real agent system is a sports car. The anchor of the series: the…

-
My Agent Isn’t Autonomous. That’s the Point.
What I actually do with my agent, why it is not autonomous, and the minimal rules that let a non-technical person lead a real agent system.
