Notes on building with AI

A central AI agent core wired to modular tools and a memory unit inside a translucent guardrail shell.
Engineering · 26 January 2026

Building your first AI agent: a practical starting point

Building your first AI agent? A grounded guide to tools, memory, guardrails and evaluation, before you write a line of code.

By Kevin Koo
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Abstract glass bar-and-line chart forms rising along an upward trajectory.
Strategy · 20 January 2026

How to measure ROI on AI training

AI training ROI is measurable if you decide what to track first: capability, adoption and impact, against a baseline you capture before you start.

By Kevin Koo
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