Hello, I'm Kei Nakayama (kexi)

CLI tool to simplify Git Worktree management. Makes working with multiple branches simultaneously easier.

• TypeScript
• CLI
• Git

A three.js driving and exploration game across Tokyo's 23 wards, built from Tokyo open data and PLATEAU 3D city models. Pedestrians and emergency dispatchers talk through Gemma 4 running on the device.

• TypeScript
• three.js
• Gemma
• Open Data

Privacy-preserving multi-agent gateway built for the All Things Agentic Hackathon. Keeps sensitive data inside a trusted boundary while frontier models reason over placeholders.

• TypeScript
• AI
• Gemma
• Security
• Google Cloud

GitHub App that scans pull requests with LLM analysis and Google OSV Scanner. Security inspection PoC running on Google Cloud.

• TypeScript
• Security
• Google Cloud
• GitHub