Field notes / 03
Built, measured, written down.
Practical notes on agent architecture, cloud data systems, and the production details that usually get edited out.
How I built Donna, my personal AI agent
Hermes, Obsidian, durable memory, specialist agents, real tools, and explicit limits.
Cutting Claude Code token use by 87%
The architecture change mattered more than the prompt.
The government API did not exist
Seven production lessons from turning static archives into a reliable data pipeline.