Talk Video: Björn Rochel – You Don't Need a Bigger Model. You Need a Better AI Harness
Watch Björn Rochel's talk from Agentic Conf Hamburg 2026 – how he built a 77,000-line app without writing code, powered by a carefully designed AI development harness.
We’re happy to share the video of Björn Rochel’s talk from Agentic Conf Hamburg 2026!
The Talk: You Don’t Need a Bigger Model. You Need a Better AI Harness
Björn showed us how he built Credfolio2 – a full-stack professional portfolio application with a Go backend, Next.js frontend, GraphQL API, background job queues, and LLM extraction pipelines – without writing a single line of code. All 77,000 lines were written by Claude Code, steered by him. Three weeks, 298 commits, one person.
But the talk wasn’t about the output – it was about what made it possible.
Björn walked us through the AI development harness he built to get predictable, high-quality results from an agentic coding tool. From a sandboxed devcontainer for autonomous agent operation to a CLAUDE.md that acts as persistent architectural memory, session hooks, specialized subagents, Architecture Decision Records, a markdown-based issue tracker, and five enforcement hooks that block broken commits – every piece was a context management strategy in disguise.
The key takeaway: you don’t need a bigger model. You need better systems thinking. You’re not pair programming – you’re architecting the environment in which AI operates.
Watch the Talk
Follow Björn on LinkedIn.