Agentic Engineering
& Research
Projects
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PostMD (opens in a new tab)
Markdown document sharing
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Neuro Reson
Brainwave entrainment · focus and relaxation
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Turink Toys
macOS utilities
Insights
Projects
PostMD
(opens in a new tab)Markdown document sharing
A service for sharing Markdown documents without signing up. Viewers are plentiful, but few services let you share and read a document instantly from anywhere, so this one was built to fill that gap. The way a document is displayed can be chosen from several styles.
Updated 2026-09
Neuro Reson
Brainwave entrainment · focus and relaxation
An Android app that plays a different frequency in each ear through earphones to aid relaxation and focus. Choose a preset and a duration, and playback continues with the screen off. Built to find out whether binaural beats are actually perceptible.
Updated 2026-10
Turink Toys
macOS utilities
A set of utilities for jobs that are awkward with macOS alone: zip files that stay readable on Windows, developer cache cleanup, app removal, and sleep settings. Use it from the app window or the terminal; AI agents can call it too.
Updated 2026-10
MeetingScribe
Live transcription for in-person meetings
An on-device transcription tool in which meeting audio never leaves the machine. The app handles only recording, transcription, and file import and export; Claude organizes the content. It is at the stage of measuring whether Korean recognition quality is good enough for meeting minutes.
Updated 2026-08
LinkWay
Link utilities under trial
A tool that gathers and tests conveniences for handling links.
Updated 2026-08
No projects with this status.
Insights
Spec-Instructed Development (opens in a new tab)
A development methodology for the nondeterminism and verification bottleneck that arise when AI agents take over coding. Instead of reading and editing source code directly, the worker treats the specification as the single source of truth, delegates implementation, and secures quality through independent verification.
Persona (e-book) (opens in a new tab)
페르소나 (전자책)
An essay on how people and technology can coexist in an era when artificial intelligence works its way into daily life and conversation. Reflecting on the warmth of conversation and the boundaries of relationships, it records, in a calm tone, the sense of self and the varied emotional moments of people who now face AI.
The Value of Writing in the AI Era (opens in a new tab)
AI 시대, 글쓰기의 가치
An essay on the value of writing as a way to organize complex thoughts and pin down what matters in an age flooded with video and artificial intelligence. It examines why writing remains useful for conveying intent to AI precisely and for preserving depth of thought.
Publications
Principles for Designing Habits (opens in a new tab)
습관을 설계하는 원칙들
Published 2025-05-02
A book on the psychological and structural barriers that block action, and on building repeatable routines and resilience.
Fintech Grappling with the Climate Crisis (opens in a new tab)
기후 위기를 고민하는 핀테크
Published 2025-04-21
A book that looks at the climate crisis from the perspectives of industry, technology, and digital finance, and discusses sustainable design.
Let's Not Just Say We're Fine (opens in a new tab)
그냥 괜찮다고 말하지 말자
Published 2025-04-11
An essay that examines fatigue and stress from a psychological perspective and offers ways to recover in daily life.
Persona (opens in a new tab)
페르소나
Published 2025-03-14
An essay that observes how artificial intelligence works its way into daily life and relationships, and gathers the thoughts that followed.
Online Game Network Programming (opens in a new tab)
온라인 게임 네트워크 프로그래밍
Published 2003-05-15
A technical book on the basic principles of online game server development and network programming.