Web Effects Pack
Fifteen film and print effects for web pages, including film burns, crumpled paper and neon. Built with CSS, SVG, Canvas and WebGL.
TypeScript/WebGL/SVG filters/CSS blend modesDemo ↗
Prototypes + experiments
Harvey's Lab
Personal tools and experiments, from running apps and language tutoring to film effects for the browser. This is where I keep those projects as I build and use them.
I build with AI tools, mostly Claude Code. The write-ups cover what I changed and what still needs work, including Plover's backtests and automated checks for its training calculations.
● Fresh
Also in the lab
the rest, newest first
Plover
I turned a notebook for my Coros watch data into a running app with Claude Code. Deployed in private beta and tested only with my own data.
Python/FastAPI/ReactDemo ↗
unit-of-trust
An interactive essay about reviewing AI decisions, drawing on my recommender, agent-log viewer and small language model. Still a draft.
Next.js/React/TypeScriptDemo ↗
local tutor
Fully local voice tutor for Mandarin and French — speak, it listens, replies, and talks back. Nothing leaves the machine.
Claude Code/FastAPI/ReactGitHub ↗
observe-ui
Decision-legibility surface for autonomous coding agents (live cockpit + retrospective blame).
TypeScript/JavaScript/PythonGitHub ↗
Recommend Arena
Twelve recommendation-system designs benchmarked head-to-head on the same dataset and ground-truth queries.
Python/ChromaDB/NetworkXGitHub ↗
AI Pattern Testing
A living catalog of AI UX patterns — agent orchestration, tool-call visualization, adaptive cards and UI.
Next.js/TypeScript/Claude CodeDemo ↗
Journ
All-local, encrypted, voice-first journaling for iOS and macOS from a single SwiftUI codebase.
Swift/SwiftUI/SwiftDataGitHub ↗
Anagnori
Self-guided iOS exposure-therapy app, built around experiments rather than sessions. A working prototype I've tested on myself.
SwiftUI/SwiftData/Next.jsDemo ↗
plytools
CLI for using Claude Code to brainstorm and track job applications.
Claude Code/Node.js/TypeScriptGitHub ↗
RunTools
Browser-based running utilities — pace converter, heart rate zones, race predictor. Everything runs client-side.
Next.js/TypeScript/TailwindDemo ↗