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DTYPE / lab

Projects

UNDERGLOW

Seoul subway records visualized as flow across the whole network map, and as cars and spaces in Unreal Engine.

Map of the whole Seoul subway network replaying transit data recorded around 23:00 on 1 October 2026, with trains shown as glowing dots on colored lines.An UNDERGLOW subway car alongside a reconstructed platform in Unreal Engine

Whole network · recorded playback

Unreal detail

WebPier

Real iPhone Safari inspection in Chrome DevTools on Windows, with inspection context shared through MCP.

WebPier connection guide in English with no iPhone connected

English UI · Disconnected test preview

Tessra

An API client in VS Code for requests and responses. Workspace data stays on your machine. No login or cloud sync.

Actual Tessra workspace in VS Code showing a demo collection and a JSONPlaceholder sample API response

VS Code workspace · Sample API response

CycleArc

A Windows tray tool with an optional desktop widget for per-account Codex, Claude, and Cursor usage, remaining allowance, and reset times.

English CycleArc desktop widget with three synthetic Codex and Claude accounts and sample quotas

English desktop widget · Development preview · Sample data

Toolkit

Local utilities for JSON, regex, SQL binding, URLs, QR codes, byte counts, and more.

ToolkitDownload HTML

JSON · SQL · Regex
Base64 · Hash · QR