https://blog.penmen.net/tags/agents/Recent content in agents on Field NotesHugoen-usTue, 07 Jul 2026 00:00:00 +0000https://blog.penmen.net/2026/07/building-a-text-to-sql-agent-that-actually-works-on-enterprise-data/Tue, 07 Jul 2026 00:00:00 +0000https://blog.penmen.net/2026/07/building-a-text-to-sql-agent-that-actually-works-on-enterprise-data/LLMs score 85%+ on public SQL benchmarks but collapse to 39–61% on real enterprise schemas. I built a multi-stage data agent for a life insurance data warehouse to close that gap — here's what 18 months of iteration taught me about why the approach matters more than the model.