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Hi, I'm Yoichi Ozaki

Technology Consultant @ Microsoft Japan

Writing about technology, learnings, and daily reflections.

Latest Posts

2026-06-11

The Same Idea with Microsoft Agent Framework — Building a Review Agent by Just Adding Tools with the Agent Harness

The 'delegate orchestration, just add tools' idea isn't exclusive to the GitHub Copilot SDK. Microsoft Agent Framework's Agent Harness (HarnessAgent) spins up an autonomous agent — with planning, todos, context compaction, and tool approval prebuilt — in one line, and you just add tools. We implement the same document review agent in C# and discuss how its design differs from the Copilot SDK version.

2026-06-11

Designing Agent Memory — A Practical Guide to Short-Term and Long-Term Memory with Microsoft Agent Framework

A systematic look at what 'memory' actually is, grounded in cognitive science and recent research papers, followed by a concrete guide to designing and implementing short-term and long-term memory using Microsoft Agent Framework's AgentSession, ContextProvider, and ChatHistoryProvider — with Python and C# code.

2026-06-11

How to Evaluate Conversation UX —— A MECE Framework for Agent–Human Dialogue Across Structure, Correctness, and Goodness

A systematic framework for evaluating the conversation UX of LLM-backed agents. We classify the evaluation rules MECE across three separable quality axes — structure, correctness, and goodness — plus a safety constraint axis, and separate what can be measured deterministically from what cannot. We then show how the weighting of the axes shifts between text chat and voice, all the way down to the cognitive science of turn-taking.

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