KHTDR - khtdr home page

Welcome, here is my inconsistently-curated collection of software, writings, notes, and whatever, that I've created over the years.

Zazen
A no-frills Android meditation timer. Pick a length, settle in, sit with a bell at each end and a soft bed of noise in between. Every sound is synthesized on the phone. No accounts, no stats, no streaks.
Mood Ring
A private Android check-in app for noticing how you've been feeling. Quick mood nudges, an end-of-day check-in, and occasional standard questionnaires. No accounts, no servers, no analytics.
The Well Rounded Climber
An Android climbing log built on the idea that grades don't transfer between gyms. Track difficulty distribution and style variety instead — on-device, no account, no ads.
pexro
A personal mobile app that runs and tracks any exercise routine described by an uploaded JSON program. Have your LLM write the program for you.

css-vars-design-token
CSS Variables as Design Tokens: A Simple Approach to Design Systems
opts.js
Command line options and arguments parser for NodeJS
agents
An agent platform where agents are database rows instead of code. Every save is versioned, everything is editable in the browser, and pipelines are graphs you draw.
pageboy
Write your shell scripts in any combination of scripting languages.
treeify-paths
Converts a list of paths into a directory-like tree structure
react-zondicons
A dependency-free, small, fast, good-looking React SVG icon set.

agents: your first agent
Describe one agent and let the install draft it, run it on a repository from the terminal and the browser, read the run back in history, then edit it in the browser. The first of three tutorials.
agents: a pipeline
Put the changelog writer in a graph as one step, with a git read before it and a file written after it, read the cost of the whole run, then add a gate that sends bad work back. The second of three tutorials.
Creating a Custom Emacs Mode
Learn how to create a custom major mode in Emacs with persistent state
A Developer's Design Implementation Checklist
A comprehensive checklist for developers to use when receiving design mockups from designers
A Tailwind-CSS development server
Simple quick way to get started learning and playing with Tailwind CSS
agents: a router
Sort support messages with a classifier whose answer is checked JSON, send each one down the branch it belongs on, and ask a person when the classifier can't tell. Then stop the server while it waits, and watch the run pick up where it left off. The third of three tutorials.
Simple live-reloading Nodejs web server
A hot-reloading web server using ExpressJS, built one step at a time.

Dark-Mode Light-Mode Css
Use a media query to set different values for variables in dark-mode.

Frédéric Chopin — The Poet of the Piano
An interactive tribute to Frédéric Chopin — life, quotes, listening guide, works catalog, and a quiz.