About

I'm Daan, a backend developer living in Utrecht. By day I work on payment systems; most of my career has been Python, PostgreSQL and a lot of reading other people's logs.

The project

aistwin is a side project: an assistant that runs on my laptop, indexes my Markdown notes and answers questions about them with links to the notes it used. The name started as a joke — “my AI twin” — and stuck.

The stack, for the curious:

• Python 3.12, SQLite with FTS5
• a small sentence-embedding model (384 dimensions) running locally
• a quantised 8B model through llama.cpp for answering
• a tiny web UI that only listens on localhost

The code isn't public yet. It's full of paths to my own folders, and I'd rather clean it up than publish something nobody else can run.

Contact

Email is best: daan@aistwin.online. I read everything, reply to most.