Hackathons

Built fast, in the room

What shipped in the time there was, and the rooms it shipped in.

HackGT 13

Sep 2026

Thinketh · Georgia Tech · Stefen Ewers + Nadani Dixon

A personal AI learning system that models what a person understands, identifies what changed relative to that knowledge, and lets two people’s agents work out what one can teach the other. Built by a two-person team during HackGT 13.

builders
2
build window
~36h
Vitest tests
270+

Competed in HackGT 13’s Oracle of the Deep AI/ML track.

Case studySource

Thinketh’s Mind tab drawn as a pixel-art bookshelf: each concept is a book, darker for stronger evidence and outlined in dashes where the engine is still uncertain, with Agent Memory bookmarked as changed and tagged Stronger evidence after the check.The Thinketh Playground: two pixel-art characters, You and Nadani, in a shared room, with the line You can teach Nadani on when AI should use a tool, three useful differences found in their evidence, and a Let our agents exchange button.
Screens from the working demo build.

Obvious Frontier Build

Sep 2026

YardToonz Reactive · Atlanta · Solo

A production pipeline for YardToonz, the Jamaican claymation comedy brand. A person approves a moment, and seven retry-safe stages turn it into a 9:16 cartoon. Built solo at Frontier.

PRs created
39
lines added
83.1K
tokens
636.8M

1st in PRs created at the build.

Case studyLive demoSource

A laptop at the Frontier build showing the YardToonz Reactive pipeline, with Stefen’s Frontier Atlanta badge and Obvious lanyard resting on the keyboard.Stefen’s Frontier Wrapped card: 39 PRs created, 636.8M tokens, 83.1K lines added, one project, and a best finish of first in PRs created.A Frontier banner reading Build Accordingly beside the glass doors of the build space.

Tapia 2026 hackathon

Sep 2026

Up Next · Team build

A movie advising agent for one person or a whole group. It checks Letterboxd, Wikidata and Rotten Tomatoes live, then gives one pick and two backups with the reasons behind each.

With the team at Tapia, where we built Up Next, a movie advising agent, at the hackathon.

Node 22, no runtime dependencies, 13 test files.

Source

Stefen Ewers with his team at the Tapia Conference: seven people in conference lanyards standing in front of the main stage.