What's truly possible with Claude Code shows not in demos but in systems running in production. Here I collect real projects — what was built, at what pace, with what reliability. The how I'll tell another time; the result is here.
A production-ready, multi-tenant platform, built largely machine-driven in six months: planning and implementing agents, an autonomous test bot, a closed fix loop. A case study with no gloss — including the points where it needed steering.
Read the case study → Meta · promptarchitect.deA case study about this very site: hours of self-recorded notes turned into readable content. The AI didn't invent the topic — it shaped my skeleton.
Read the case study → Meta · promptarchitect.de · Version 2The sequel to the meta case study: the two-day build became a living system in the week that followed — blog, a moderated comment system, newsletter, an English edition. With an hourly chart that shows the project's “heartbeat”.
Read the case study →Another case study is taking shape: how a demanding OIDC building block comes together with Claude Code — and why a single hard component reveals more about the way of working than ten easy ones.
Soon →