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Reflecting on some of the toughest challenges I've tackled in my career.

Trust, But Re-Execute

Trust, But Re-Execute

An agent that writes analytics reports will eventually invent a statistic. Ours announced a 26.7% reply rate no query produced. This is how Spot's report generation was rebuilt so a report cannot state a number it didn't compute — and the blind, adversarial scoreboard that proves it.

Agentic AILLMsPythonPostgreSQLReact.jsSQL
The AI Agent's Best Tool Is Fewer Tools

The AI Agent's Best Tool Is Fewer Tools

A capable model with ten tools burns through its step budget before it can answer anything. So Stir routes every query through a tiny classifier first, scopes the main model to a four-tool subset per intent, and short-circuits one-word queries with zero LLM calls.

Vercel AI SDKAgentic AIZodLLMs

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