Hi, I’m Lorenze.

I build open-source tools for agentic systems used by thousands of engineers and over 70% of Fortune 500 companies.

A cobalt and ivory halftone illustration of the Lands End coastline in San Francisco
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Writing

Notes from work and everyday life.

Practical essays on agentic systems and the craft of building software, alongside the things I notice away from the keyboard.

Latest essays

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Routing on a number: one CrewAI support router on three decision APIs
November 12, 2026Agentic systems

I ran the same CrewAI support router on Jev, OpenAI Decisions and Gemini Decision. Two handled every case. The third missed the one case the demo exists to teach.

Learnings from building reliable agentic systems that make it into production for enterprises
November 4, 2026Agentic systems

Lessons from my workshop at The AI Conference on balancing determinism and agency, designing a reliable harness, and using traces to improve what you ship.

Practical Multi Agent RAG using CrewAI, Weaviate, Groq and ExaTool.
November 18, 2024Agentic systems

Adding rag systems to your agentic workflows can help you build more intelligent systems with more relevant context and data. This guide will show you how to build a practical that uses internal documents to generate a report.

RAG with SIRI using Verba and Weaviate with a couple lines of code.
May 31, 2024Agentic systems

I used Verba to create a knowledge base easily and using my voice to fetch appropriate data and open it for me.