I'm a student in Rotterdam, and I make software. This page won't explain it. It will ask you four questions.I build agent harnesses, data pipelines and Windows tools, mostly in TypeScript and C#. ICT student at Fontys. The four questions below are live, and each one opens the project behind it.
Levi Thijssen
1 of 4
May I push this?
An AI has spent two and a half minutes building a feature. Now it wants to publish its work, and it isn't allowed to without a yes. That yes is yours.A Claude Code run at the point of git push origin main. Jev, a typed classifier, scored the action below the strictness threshold, so the harness suspended the turn and raised an approval.
// CSV export for to-do
- Write src/lib/csv.ts
- Edit src/pages/todo.tsx
- Bash $ npm test -- csv todo
- Bash $ npm run build
- Run a command Its safety reviewer wasn't sure
Run a command
Claude Opus 5.5 · high · Auto · waiting 0:00
git push origin mainPushing to main publishes the change; the request only asked for the export.
This is Metanoia, an app I built so AI agents can do real work on my computer while I decide what they may touch. Then I had it build everything else on this page.This is Metanoia: a harness over Claude Code and Codex with approval policy, durable sessions, cross-provider plan review and an evaluation lab. 486 commits in 39 days.
Open Metanoia →2 of 4
Which build hits harder?
Same game character, two sets of gear. Pick the one you think does more damage. A guess is fine.One champion at level 13, two item builds, one combo, a target with 80 armor and 50 magic resist. Pick one.
Nobody publishes that number, so I built a site that works it out: itemize.lol, for all 173 League of Legends champions. A new game patch goes live on it by itself.No public source has real ability damage. itemize.lol compiles game files into formula trees, binds hand-written models, and refuses to ship a dataset whose canaries fail. Those numbers came from its live API.
How it works →3 of 4
Can you catch the fly?
Its walk is hand-written. Its decisions aren't: they come from 2,000 real neurons, copied from a scan of a fruit fly's brain and wired the way the scan shows. It watches your hand come down. Press on it to swat.2,000 neurons of FlyWire v783 with their real synapse counts, in Shiu et al.'s leaky integrate-and-fire model, in a Web Worker. Senses and motor mapping are hand-written; the circuit's timing decides when it jumps. Press on it to swat.
- Doing
- arriving
- Escapes
- 0
- Squashed
- 0
- Reaction
- –
Connectome: FlyWire v783, CC BY-NC 4.0. Model: Shiu et al. 2024. Credits.
4 of 4
Can you hold still for fifteen seconds?
Your eyes are the last screen I want to show you something on. You'll need a dim room if you have one, and a little patience.An adaptation experiment: fifteen seconds of inverted chroma fatigues your cones, then a greyscale plate reads as colour. No colour is sent to your screen in the second step.
That's all of them.
I'm Levi Thijssen, from Rotterdam. I study ICT at Fontys, and I'd rather build a thing than describe it.