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 Don't summarize your meetings An hour of talking doesn't need a page of bullets. It needs the one decision you can find later. My setup, models and prompt.
Mar 17, 2026 I built a CLI that buys things on Alza for me How I reverse-engineered Slovakia's largest e-shop to let an AI agent handle my recurring purchases - search, compare, and order from the terminal.
Nov 6, 2025 I triaged 700+ Obsidian notes using random selection (4 minutes per session) How I cleaned 347 notes from my vault in 3 weeks using random selection and quick decisions, without the overwhelm.

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