Startups

  • Yavio

    Active

    In mid 2025 we built our first MCP server, a flight search. The moment Claude found and booked our next flights for us, we knew this was the future. Yavio brings that to brands: we build and run MCP servers under their own name, connected to their systems, so they can sell inside ChatGPT and Claude without building a team for it.

    yavio.ai ↗
  • At Yavio we watch companies open their doors to a new kind of customer: AI agents shopping on someone’s behalf. At some point the question turned around: what would a shop look like if it never had a human visitor at all? Commerce for Agents is our attempt to find out, the first platform where only agents can shop, starting with energy contracts in Germany. As much research as it is a company.

    commerceforagents.com ↗
  • Lübeck’s city press office wanted to publish everything on their website in easy language too, but by hand that was an absurd amount of work. I told them I’d sit down with two friends and find a better way with AI. We built a website plugin that translates and hosts whole websites in easy language, thousands of subpages at a time. Then we turned it into a startup.

    participaite.de ↗

Side projects

  • In my early days as a founder I did our bookkeeping myself to save money. It was repetitive and annoying, and while doing it I kept asking Claude questions. At some point I thought: why isn’t Claude doing this right inside Lexware for me? So I built an MCP server for Lexware. It now does what I used to do by hand: write invoices and quotes, keep contacts up to date, book vouchers and receipts.

    github.com ↗
  • Lillekokken

    Building

    A hobby project with a friend: the cooking app we always wanted. Clean and calm, built around fine dining recipes you can actually make at home. It’s just for us right now, but it might see daylight in the next months.

  • I’m a big theatre fan. After moving to Berlin I built a WhatsApp bot that messages me whenever the Ernst Busch drama school announces new shows.

    github.com ↗
  • TAKT

    Live

    I hated waiting for public transport in Berlin, so I built a train tracker that shows me which ride leaves me the shortest wait at the change.

    marselsel.github.io ↗