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Applications

A complete log of digital artifacts, experiments, and production deploys.

Screenshot of Alexandria, a Claude Code, Python, Obsidian project by Payne Kerz IDX_01
Claude Code Python Obsidian
2026

Alexandria

Three Claude Code skills that teach you your own codebase, then file each lesson into an Obsidian library with glossaries, indexes, and a flag when the code drifts.

Screenshot of NestMath, a Astro, React, TypeScript project by Payne Kerz IDX_02
Astro React TypeScript
2026

NestMath

Twenty-one financial calculators, from buy vs. rent to Social Security timing, each one pure TypeScript running in your browser. Your inputs stay on your device.

Screenshot of Queuedoro, a React, Astro, TypeScript project by Payne Kerz IDX_03
React Astro TypeScript
2026

Queuedoro

A Pomodoro timer built around a task queue. Each focus session pins to a task, finished sessions earn coins, and the coins buy backgrounds and sounds in the shop.

Screenshot of TrailScan, a React, Leaflet, Astro project by Payne Kerz IDX_04
React Leaflet Astro
2026

TrailScan

Drop in a GPX file and read your run: route map, elevation profile, splits, pace zones, heart rate. Your browser parses the file, so it never leaves your device.

Screenshot of This Portfolio, a Astro, React, Tailwind v4 project by Payne Kerz IDX_05
Astro React Tailwind v4
2026

This Portfolio

The site you are reading. Astro 6 with React islands, Tailwind v4 tokens defined in CSS, three fixed surfaces, and almost no JavaScript shipped to the browser.

End of archive · 5 projects
Open to collab // Kansas City, MO // Working worldwide // Open to collab // Kansas City, MO // Working worldwide // Open to collab // Kansas City, MO // Working worldwide // Open to collab // Kansas City, MO // Working worldwide // Open to collab // Kansas City, MO // Working worldwide // Open to collab // Kansas City, MO // Working worldwide //