Euiyun Kim
Design, build & ship — with AI agents
I take games, web, and mobile products from idea to production end-to-end. I build AI developer tooling — MCP servers and Claude Code skills — and analyze and write about agent-driven workflows.
$ the agents in the background are hand-built too — move your mouse or click · how it works
What I do
AI Engineering
Integrating AI agents into the development pipeline — building MCP servers, designing Claude Code skills, and automating agent workflows.
Product Engineering
From idea to operating service — planning, frontend, backend, deployment, and SEO, shipped end-to-end.
Games & Interactive
Interactive experiences built on physics and rendering — shipping mobile games and real-time simulations.
Featured projects
mcp-server-xlwings
MCP server for Excel automation — lets AI agents manipulate spreadsheets directly, including DRM-protected files.
Writing & analysis
Claude Code Insights #2
23 sessions, 276 messages, +18,890 lines — AI collaboration workflow analysis across Color Lab, a mobile game, this portfolio, and more.
Claude Code Insights #1
66 sessions, 1,111 messages, 287 commits — development workflow analysis with Claude Code.
Vibe Coding Together
BookA guidebook on "vibe coding" — how generative AI and coding agents are reshaping the development landscape. (Korean)
WikiDocs Blog
Tech blog — Claude Code Korean skills and AI-assisted development experience.
Got an interesting problem?
AI tooling, product engineering, collaboration — happy to talk.
[email protected]