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Walkout

Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote

Walkout — Demo video

Shop owners see a sales number, never the moment someone gave up. Walkout sends twelve shoppers with different lives through a real shop in real browsers. Rosa is a night-shift nurse on a cheap Android phone on the bus. Margaret reads at 200 percent zoom, Dev only uses the keyboard, Amara uses a screen reader and Lucía has her browser in Spanish. Each shopper is a Meta Muse Spark agent that looks at the screen, taps one thing at a time, and says why. When one gives up, Spark writes one plain sentence with the moment and the cause. Spark picks the files, Muse Wonder writes the patch and then reviews it as a second pair of eyes. The shop gets rebuilt, the type check and lint inside the build are the gate, the fixed image goes live on the same port, and the same twelve go again. Every step, screenshot, finding and Meta call is kept on disk for review. The demo video is one live take on my server, start to finish, on the OpenTelemetry Demo at release 2.1.3, which shipped a cart total that ignores quantity (issue 1526). 1 of 12 bought. Ten of the eleven who left said the same thing, the total doesn't add up. After the patch, 9 of 12 bought, and the three who still left did so for three other reasons: Dev can't reach Add To Cart with only a keyboard, Rosa's cart button does nothing on her cheap phone, and Lucía, shopping in pesos, caught a one-cent rounding difference. Three real bugs the patch didn't touch. A round of twelve costs under a dollar.

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