Folio 2026
Code that ships
Books that balance
A life on the water
TypeScript · AI agents · accounting · sailing on the North Sea
01 — Work
Books that tell the truth
Agents that decide on it
Contextual bandit router
LinUCB versus vector-native routing for multi-agent systems. PostgreSQL, pgvector.
Multi-agent orchestration
Heuristic agents in LangGraph, zero-to-hero patterns, orchestrated workflows in TypeScript.
Bookkeeping operations
Automated bookkeeping for SMEs. From transaction capture to balance sheet, no ceremony.
02 — Writing
The blog is the portfolio
Each post is something I built, broke, or worked out.
03 — About
I write TypeScript that makes decisions,
and keep books that tell the truth.
The two aren’t as far apart as they sound — both are about structure, correctness, and knowing what the data says.
On the code side I build AI agents, contextual bandits and orchestrated workflows with LangGraph and PostgreSQL. On the books side I handle accounting for small businesses that want clarity, not complexity.
04 — Agents
Let the agents do the work
I used to say: let the money do the work. That was the old creed — capital sitting still, waiting for the right moment. Now the money hires agents.
Small, narrow, boring agents that read the mail, match the invoice to the ledger and write the entry. Not because it is clever, but because it is repeatable.
An agent that does one thing well, every day, without being asked, is worth more than a model that can do everything once.
05 — Elsewhere
Other things I keep running
Sites I build and maintain, and the volunteer work that keeps me honest.
agentcursus.nl · AI agent courses
aidevforum.com · AI news and discussion
schonehuid.com · skincare
stichtingwol.com · charity
planwestholland.nl · foundation