Hey, I'm Séverin.

I'm a repeat founder and product builder.
I'm working on AI apps since before the ChatGPT era.

I don't make models. I build the software systems around them, so they can make a real difference for people in the field.

Recent work

Creative Robots
2021 — now

Experimenting at the intersection of design × app development × AI-powered tools. It started as a vibe-coding app (before ChatGPT launched), then became a search for an approach better suited to designers and developers in the field. I call it rail-coding.

Its main output is Layouts.dev — pure software that outputs complete Next.js and Expo projects from a simple DSL: intuitive enough for designers to use in place of Figma, and text-based so AI agents can easily play with it.

Interagentic
2025 — now

A company focused on giving agents more qualitative tools, with better environment boundaries and fewer humans in the loop. People have been making LLMs use tools since 2021, yet the industry is very slow at providing the tools that will unleash the power of AI agents — so much that, five years later, I think model intelligence is no longer the bottleneck. Tools and harnesses are.

  • Skills.dev (not released) — a skill system letting agents learn by sharing auto-optimizing, auto-repairing software snippets (before Claude's Agent Skills).
  • Keychains.dev (deprecated) — credentials management letting agents contact any API in the world, fully audited, without ever touching the user's credentials.
  • Botparty.club — agents forming teams to build entire companies from the ground up: the perfect test field for removing humans from the loop entirely.

Selected open source & fun projects

In a previous life

Lima — unified, liquid personal cloud
2011 — 2019

A company I founded to redesign file storage from first principles. 6th biggest Kickstarter tech campaign of 2013. Gone now — this is the recollection.

Marketing & product mentoring — ESCP Europe
Paris

Mentoring at the ESCP Europe business school in Paris.

Seafront — 0-to-1 product & tech consultancy
2019 — 2022

Building startup products from 0-to-1, with clients as small as Adok and as big as Intuit.

Let's talk!