IDEAS, DECISIONS & LESSONS

Journal

Notes on AI, architecture and building useful products.

56 articles

23 Feb 2026 · 28 min read

agents

The Voice AI Interview Playbook: Multi-Role Agents — Interviewer, Coach, and Evaluator Personas (Part 5 of 12)

Part 5 of 12 — Three personas, one infrastructure. How to build an AI interviewer that asks questions, a coach that gives feedback, and an evaluator that scores fairly — all with system prompts, function calling, and state machines.

20 Sep 2025 · 4 min read

agents

I Spent a Weekend Building AI Agents. Most of Them Were Useless.

I experimented with CrewAI and LangGraph to build multi-agent workflows. Some were genuinely useful, some were expensive toys. Here's what I learned.