Andrej Kostal painted as a Renaissance scholar in his study

Hello, I'm Andrej.

I run the e-commerce agency Blueweb,
help e‑shops grow profit at UNIT618
and build AI tools.

Now (Oct '26)

UNIT618
CRO + data team, now its own company
Blueweb project radar
daily health check of every client project
Zapadel
padel rankings + matchmaking for Žilina

Latest writing

Oct 1, 2026 From meetings I keep only what still holds in six months Why a meeting summary isn't enough for me, what I actually keep from a meeting, and how an agent helps with it. My setup, models and prompt.
Mar 17, 2026 I built a CLI that buys things on Alza for me Alza has no public API, so I mapped it myself and built a CLI on top. An AI agent handles my recurring purchases through it, and I only confirm the order.
Nov 6, 2025 How I cleaned up Obsidian 10 random notes at a time In 3 weeks I went through 347 of the 708 notes in my vault, 10 random notes at a time and about 4 minutes per session.

Work with me

Running an e‑shop and not sure where the profit leaks? Or building something with AI agents? Write me.

Daily drivers

bb: my IDE, a thread per agent
pi: coding agent harness on Claude and GPT
Helium: browser
superwhisper: I talk, it types
MacWhisper: meeting transcripts
tldraw: thinking on a canvas
Rift + SketchyBar: tiling, keyboard only
Command OS: my own app to run the company

Path

'16 Frontend Developer
'18 UX Designer / Web Analyst
'21 DesignOps Lead
'23 Chief Operating Officer
'25 CEO, Blueweb
'26 Founder & CEO, UNIT618