Founder. Developer. Author.
Always curious.Ideas are good.
Building them
is better.
I’m Stefan Hamann. Shopware co-founder, developer and author. I’m interested in what happens when you refuse to let go of a good question. These are the projects, ideas and detours that follow.
Stefan.
Happiest in the middle of it.↗
Happiest in the middle of it.↗
What keeps me curious
SoftwareArtificial intelligenceResearchOpen Source
01 / From my workshop
Less “someone should”.
More “here it is”.
A selection of things I build and help shape. From local AI to a PCB milled in the workshop. Some are tools, others are still a beginning.
makera-pcb
From KiCad files to a PCB of your own. Plan toolpaths, inspect 2D and 3D previews and prepare the milling workflow for the Carvera Air.
Also in your browsermigratemy.shop
Explore public storefront signals and compare possible migration scenarios. A planning tool with estimates and explicit assumptions.
These six are pinned.
There’s more in the workshop.
02 / Shopware · Agentic Commerce Labs
The future of commerce.
Put to the test.
At Shopware’s Agentic Commerce Labs, we work on the questions ahead of the next roadmap: what will merchants, developers and customers need when AI agents shop, advise and take on tasks?
Our answer starts with something concrete: open interfaces, reference implementations and experiments people can inspect, try and question.
01Reference implementation
One goal. Two agents. A real shop.
A shopping agent finds products and builds the cart. A merchant agent prepares changes with previews and approval. Business rules and checkout stay in Shopware.
Demo: chat requires your own Anthropic API key.
02Experiment · B2B procurement
One purchasing brief. Many negotiations.
Procurement Swarm explores agents gathering offers, negotiating by email and combining their findings. With local Shopware shops, simulated suppliers and an inspectable purchasing plan.
An experiment with simulated suppliers; not a finished Shopware product.
03Developer tool · UCP
An interface. A flow you can inspect.
The UCP Scanner & Simulator inspects shop profiles and declared capabilities, and simulates commerce flows in controlled scenarios. For developers connecting shops and agents.
04Open framework · agent work
Good work should be inspectable.
Pawl connects assumptions, checks and results in coding-agent work. Failed attempts stay discoverable, so the next round can build on what we actually know.
Connecting the pieces
Open is no extra.
It’s the foundation.
We explore how shops and agents communicate. These open projects from the Lab are part of that work:
ARDMake capabilities discoverableWhich data and actions does a shop expose to an agent?WebMCPWork together in the browserSearch products and work with carts through structured tools.AXPUnderstand more about a productA protocol proposal for product details, quality signals and interactive experiences.
THE NEW BOOKDE / EN
2026
03 / Ideas between two covers
Agentic
Commerce.
The handbook for commerce strategy, technology and leadership.
What changes when software can act? My new book connects a founder’s perspective with a developer’s: theses, practical experiments and a clear position on the future of commerce.
21 chaptersDeutsch & EnglishRead freely online
The complete web edition and PDFs live on agentic-commerce.sh.
04 / Following the next question
What if there’s
another way?
Alongside building are the questions without answers yet. How can intelligence emerge? What structures underlie physical laws? Two research projects I keep coming back to.
01
Hylæan
Intelligence as a dynamic field
An experimental research approach to a different architecture for artificial intelligence. Hypotheses, architecture and open questions.
02TFPT
Topological Fixed-Point Theory
An open research programme spanning geometry, mathematics and fundamental physics. With papers, code and inspectable checks.
Research also means keeping open questions visible. These are ongoing investigations and hypotheses, rather than claims of a completed theory or generally proven AI capability. Explore the TFPT code
05 / The person behind it
I like to think.
I love to build.
I’ve stayed a developer, even after “founder” became part of the story. As Shopware co-founder and Chief Agentic Officer, I explore how technology gives businesses more room to create. I’ve been doing this for over 25 years.
Outside that role, I follow my curiosity. Sometimes it becomes an AI tool. Sometimes an arcade frontend. And sometimes a question that takes an entire research project to explore.
- Build in the open. Share what you learn.
- Try ideas before making big claims about them.
- Prefer a good question to an easy answer.
My professional focus
The future of commerce.
The book, commerce theses and Lab work have a home of their own.
06 / A few open tabs
My little corner
of the internet.
Keep exploring: my projects, the communities around them and what I help build with others.
Notes from the engine room
Ideas worth
following.
On commerce, artificial intelligence, research and building things. My LinkedIn articles, available here in full and free to read.
What if a team of AI agents could help with B2B procurement?
An experiment from the Agentic Commerce Labs: Procurement Swarm brings together Shopware, UCP and autonomous email negotiations in a fully working demo environment.
Read articleAgents are becoming a buying surface. The shop underneath has to become an execution layer.
Shopping is moving into the assistant. When a customer states a goal to an agent instead of clicking through a category tree, the shop has to expose catalog, cart and checkout as callable…
Read articlePawl: the ratchet that keeps agent work honest
This morning, our AI agents reported a result we did not want: a promising repair for damaged memory healed 0 of 10 cases. Not five. Not two. Zero.
Read article
The Open-Weight Inflection
For two years, "open-source AI" carried an implicit asterisk: good enough, if you can't afford the real thing. That asterisk is gone. In the first half of 2026, Chinese labs — Z.ai, DeepSeek,…
Read article52 articles · 2023–2026 · in their original English
Explore all articlesThe next good question?
Let’s see
what’s next.
An idea, a question about the book or a project you can’t stop thinking about? I’d love to hear about it.