A week, a building, and the people in it
Barcelona already had a Claude community. It met, it built, it argued about context windows over beers on a rooftop, and it did that all year. The Claude Community House is what happens when the other European chapters bring their own version of that to the same building for a week, under one name.
Who runs it
It is an independent community initiative, co-produced by The Tech Nation, Happy Operators and clauders.com, with the European Claude Ambassadors network.
14 ambassadors host and animate the week. That is the whole design: the person giving the talk is the same person you will be debugging with an hour later, and the sessions are proposed by the people who run them rather than programmed from above. The Tech Nation publishes the programme and opens the building. It does not write, run or warrant the content of a session it does not host.
Ten European chapters are represented. Each brings its own format, its own regulars and its own way of doing things, and for one week they are all in the same place.
What it is not
It is not an official Anthropic event. Claude and Anthropic are trademarks of Anthropic PBC, used here to name the community that gathers around the product. Anthropic supports the week; it does not run it, and nothing said here is said on its behalf.
It is not a conference either. There is no keynote, no badge queue and no exhibition floor. There is a building, a programme its own hosts wrote, and a rooftop.
And it is not a lead-generation exercise. This site holds no attendee list of its own: every registration happens on Luma, run by the host of each session.
The practical part
When. September 21 to 24, 2026, four days.
Where. B@B - Bilbao 128, in Poblenou, Barcelona.
How much. Free. The one exception is The AI Afterwork on the rooftop, 18:00 → 22:00 every evening, which is run separately by The Tech Nation and ticketed.
How to come. There is no ticket to the week. Every session has its own Luma page and its own host, and you register for each one separately. Luma sends a QR, and that QR is the door.
Who publishes this. The Tech Nation S.L., NIF B19412451, Passeig de Gràcia 2, 08002 Barcelona, Spain. An AI transformation company based in Barcelona.