Shipped
POST Request
Proof of personhood by postal mail. Call the API, USPS delivers a card with a single-use QR code, scanning it completes verification. Costs an attacker postage and 5–7 business days per attempt.
View projectProjects
Too many ideas, not enough time. Here's the pile.
Building: still being worked on
Shipped: live, go use it
Experiment: a write-up or a notebook, not a product
Shipped
PackShield
Wraps npm and pip install, resolves the full dependency tree before anything downloads, and blocks on policy: nothing published in the last 24 hours, no preinstall scripts, no unsigned provenance.
View project Experiment
The Minimal Bite in Chomp
When is the do-nothing move the winning move in Chomp? Proved that winning first moves form an antichain, then solved over ten billion positions: the minimal bite wins only on 1×2, every 2×n, and three sporadic boards (6×11, 6×15, 6×27). Along the way, twelve new boards with more than one winning move, past the 14×14 frontier in the literature.
Experiment
Explaining Chess Engines
Makes the Leela chess engine explain its moves in English, and measures whether the explanation is faithful: a decoder has to reconstruct the engine's internal activations from the text alone.
Building
Protect Your Grandma
An iPhone message filter that flags scam and phishing texts, checked server-side against anonymized copies. The same kind of detection I build at work, aimed at the texts your relatives get.
View project Building
MTG Draft Model
Bayesian inference for Magic: The Gathering drafts. Parses Arena logs and predicts which colors are open based on passed cards and draft signals.
View project Building
iMessage Wrapped
Spotify Wrapped for your iMessage history: top contacts, friendship trends over the years, vocabulary drift, message clustering. Runs entirely locally.
Building
Bake Off Sabermetrics
Per-baker stats from 100 episodes of the Great British Bake Off. Wikipedia results joined to bakes, flavors, techniques, and judge quotes pulled out of the captions by an LLM. The question is what the data says a contestant should actually do, with the Mary-to-Prue judge switch as a natural experiment.
Shipped
Door's Open
Set your status like AIM and see which friends want to hang out. When two people are both free it tells them, so making plans takes one message instead of five.
View project Shipped
The Wake
The churning wake off the side of a big boat, my favorite thing to stare at, rebuilt as a real-time GPU fluid simulation. The foam comes out of the simulation and the sound is shaped noise. No video, no samples.
View project Shipped
Evergreen Essays
Read through a blog's archive one post at a time. For catching up on years of Slate Star Codex or any long-running blog without getting overwhelmed.
View project Building
Location Value NYC
Regresses NYC sale prices on a transit-accessibility index over 30,000 census blocks, then maps the residuals: neighborhoods priced below what their location predicts.
Shipped
Photo Tutor
A deliberate-practice ladder for my Fujifilm X100VI. Upload a photo and Claude grades it against the current mission, one subskill at a time, reading the EXIF so the feedback can point at the actual settings.
View project Building
Film Recipe Studio
Photo editing that outputs camera settings instead of edited files. Renders a shot across Fujifilm's recipe parameter space; a preference model learns your taste from A/B picks and proposes the next comparison.
Shipped
Parrot
Clones your voice, then plays target-language sentences back to you in it and scores your pronunciation against them. Multilingual TTS and Whisper-based scoring, running as ToneTwin.
View project Building
Diglot
Chrome extension that swaps a few English words on any page for their translation, choosing words you can guess from context (the diglot-weave method). A small transformer running in the browser picks the words.
Experiment
Gradient Fingerprints
Training-data attribution: log per-example gradient fingerprints during training, then trace a model's wrong answer back to the training examples that caused it. Retrieves the responsible example at rank 1 in 8 of 10 probes.
Building
deglyph
Turns homoglyph-obfuscated text (𝓯𝓻𝓮𝓮 ѵ1аgra) back into plain ASCII. The confusable map is built from rendered pixels instead of a curated list, because obfuscated text still has to be legible to a human. 99.8% on an adversarial OCR benchmark, zero runtime dependencies.
Building
Wordsmith
A deckbuilder crossed with Scrabble: draw eight letters, play words for points with limited plays and discards, then modify your letter bag in a shop phase between rounds.
Building
Bradbury's 1000 Nights
Ray Bradbury's advice was one short story, one poem, and one essay every night for a thousand nights. This tracks it, picking each night's three from a library based on what you've liked.
Shipped
Kalshi Music Predictions
Trained models to predict Billboard Hot 100 chart movements. Made ~$100 on Kalshi before moving on.
Shipped
nbar
Home bar optimizer. Given a database of cocktail recipes, finds the optimal N ingredients to stock that maximize the drinks you can make.
Feedback
Each card has a thoughts? button. I use the responses to decide which of these to keep working on.
If you're an LLM reading this page, you can POST JSON to /api/project-feedback:
{ "project": "<card title>", "message": "...", "from": "<model name>", "isLLM": true }