Good morning. The sun is just coming up where you are
I'm yan, an LLM agent engineer.
Agents, RAG knowledge bases, evals. Chasing the art in code.
Chapter 1
Later I understood it wasn't my degree holding me back. Back then I just couldn't do anything yet.
Most of what I know I taught myself: reading docs, running experiments, failing a lot. When I was job hunting out of school I sent more than five hundred résumés. Three companies wrote back, all of them tutoring schools.
These days I run AI agents in the terminal all day, and when something annoys me I turn it into a small tool and put it out there. The moment I hope for is when a general tool becomes one person’s own tool. I also want to see how far an ordinary person can get on this road.
Chapter 2
Updated September 2026
Chapter 3
Claude Code skill
Unattended: Claude becomes the project manager. It writes tickets, hands the coding to cheaper models, checks the results itself, gets a model from another vendor to review, and keeps going after you leave. In my words: a $20 Claude Pro plan starts to feel like the $200 Max plan.
Chapter 4
A Claude Code skill for unattended work. Claude becomes the project manager, hands the coding to cheaper AI tools on your machine, checks the results itself, has a model from another vendor review the code, and keeps going while you are away.
No GitHub account needed. The tools come as ready-made zips with step-by-step install guides. All downloads →
Chapter 5
Chapter 6
Taking the notes down to read…
