Field notes from building kOS
We build kOS, the AI operating system our use cases run on, and the vertical products on top of it. The notes are from that work: the bugs that taught us something, the decisions that turned out to matter, and the measurements behind them.
Every post comes from something we actually shipped. Where a number appears, it has a source.
Recent notes
DONNAJAMES and KlusAI: one platform for Dutch legal professionals
One platform, built for more than 200 Dutch legal professionals. Powered by Claude, built on kOS, and production-ready in about twelve weeks from kickoff.
Read the note 2026-08-09Four sites, one tracker id, and three dashboards that said Setup pending
One Django app serves four public sites. All four shipped the same analytics tracker id, so three products filed their traffic under a fourth, and the fix was less interesting than the reason we could not …
Read the noteReading about the platform is the slow way to evaluate it
Bring a use case and we will scope it with you, on the real thing.