What it is
A cluster of experiments with one question underneath: what does commerce look like when agents are the customers? The pieces:
- medusa-cz-pack: Czech-market adapters for the Medusa commerce SDK, adding ComGate and GoPay payments, Packeta (Zásilkovna) delivery, Fakturoid invoicing, and ARES registry lookups. Built while helping rebuild atlet.cz as a modern Medusa shop.
- Postbot: an agent that sends physical letters. PDF in, Česká pošta API out, paper in a mailbox. Currently blocked waiting on API credentials. This is the one I want most: an agent that can hold an account and act in the physical world.
- QRPlatba: converts payment requests into Czech QR payment codes, because I got tired of copy-pasting account numbers from friends.
- doklady: my monthly invoicing chore, automated. Claude Code with skills that collect attachments from email and desktop and ship them to the accountant. Never published; runs every month.
Why
Everyone builds agents that talk. I’m interested in agents that transact: pay, order, deliver, mail. The Czech market is small enough to wire end-to-end and real enough to matter.
What I learned
The hard part of agent commerce isn’t the agent. It’s the accounts, credentials and compliance around every real-world action. That friction is exactly why it’s a moat for whoever wires it first.