Writing

Build logs, not hot takes.

Engineering notes from building production LLM systems — agent architectures, guardrails, evals, and the cost discipline that keeps them running.

17 Jul 2026 · 4 min read

How I let an LLM write SQL against my database — safely

The four-layer guardrail that lets a Gemini-powered manufacturing copilot write its own SQL without ever being able to hurt the data — and why the human stays in the loop.