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SEP 2026
About me
WebML at Hugging Face, Google Developer Expert, and a few years of conference stages behind me. The long version, plus what came before.
Who I amTalks
AI agents in the browser, K.I.T.T. in JavaScript, robots over Bluetooth, ... Every one with on-device live demos along the way.
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Side projects, articles, videos, pictures and podcast appearances. Whatever I am currently building and exploring.
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Where you can catch me
Over the past few years, I’ve spoken at conferences and meetups across Europe, meeting brilliant people and happily nerding out about what browsers can do.
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Project
SEP 2026
open-jev
nico-martin/open-jev38
open-jev is a browser-focused TypeScript library for typed decisions: one piece of text (the state) plus any number of typed questions go in, and one forward pass returns a calibrated probability distribution per question. Nothing is generated, so an answer is always one of the options you provided.
Video
SEP 2026
Transformers.js v4.3: Structured Output in the browser
Transformers.js v4.3 is out, and the big one is structured output. With the new @huggingface/transformers-structured-output package you can force a model to follow an exact JSON Schema or regex, directly in the browser. No more parsing markdown fences and hoping the model picked the right property names. In this video I walk through how constrained decoding works, how the new package hooks into the logits processor in Transformers.js, and the technical story behind it: from a WASM wrapper around llguidance to a pure JavaScript implementation with almost no overhead. Also in 4.3: a complete overhaul of the documentation pipeline and a bunch of community-contributed fixes and features. Thank you!