I am Jonas and
this is my website.

I write about roleplaying games, game design, AI, and sometimes rationality.

This page hosts my projects, essays, and occasional thoughts on other topics that catch my interest.

I work at PlayInsight Studios and help run Pro Ludens.

โ€œ๐‡๐š๐ซ๐ ๐“๐ข๐ฆ๐ž๐ฌ ๐‚๐ซ๐ž๐š๐ญ๐ž ๐’๐ญ๐ซ๐จ๐ง๐  ๐ฃ๐š๐ฐ๐ฌ.โ€

All thoughts →

Ask the Archives: AI Rules Lookup for AD&D 2E

Building an AI agent that answers AD&D 2E rules questions by searching the actual books โ€” not by guessing from training data. Architecture notes on embedding search, Claude Sonnet tool use, and making AI trustworthy for reference work.

ai claude-code web-dev