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EmberWalk

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

Demo video · judges.emberwalk.app/…

In 2018 the Camp Fire destroyed 18,804 homes and buildings in Paradise. In January 2025 the Eaton and Palisades fires destroyed 16,264 more in Los Angeles County. Every year it's another town, and every year families lose their house and everything in it. I'm Deacon Roswell, and I built EmberWalk because so much of what sets a house on fire is small and fixable. IBHS, the insurance industry's building safety lab, found that embers cause up to 90 percent of home ignitions. An ember lands in the wood pile against the wall or the dry leaves in the gutter, and the house goes from there. Those things cost almost nothing to fix. The hard part is knowing which ones matter on your own property. So in ten days, Oct. 26th to Nov. 4th, I built the whole path a homeowner needs, from the first look to the fire inspector's sign off, and the company that runs it. You walk around your house once with your phone. EmberWalk shows you what would burn, how far each thing sits from your walls, and what to fix first, with the California rule behind every item. Then it helps you get the work done. It finds licensed crews near your house from the Contractors State License Board's list, drafts each quote request with your photos and follows up with a quiet crew up to three times. When every fix is done, it drafts your inspection request to your local fire agency, listing the fixes you completed. Nothing goes out until you approve it, and you keep a dated report of every walk and every fix. To test it honestly I built three houses in Blender, a house, an apartment and a mobile home, with every hazard placed by hand, so each comes with an answer key. All three went through SAM 3.1, Muse Spark and Muse Image end to end. Every model answer is stored in the repository, and anyone can replay the whole run against the answer keys with one command, no keys and no spend. More than 7,000 automated tests check the code every time it changes. Real phone footage is the next step. EmberWalk is a real company. The Arbiter Bibendi LLC runs it at emberwalk.app, with its own terms and privacy pages and payments through Stripe. A homeowner pays $12.99 a year for 4 walks. Landlords and property managers pay $39.99 a year for 15 walks across any of their buildings, see every property in one place, and can send the walk to a tenant. Extra walks are $2.99. For judges: the website is https://emberwalk.app, with the full film. The judges' portal, https://judges.emberwalk.app, is open with no sign in all day Nov. 4th: watch the film, or a sample walk and its results in a copy of the app. The app is https://go.emberwalk.app on a phone: tap See a Sample House, or sign in with your email and a 6 digit code. Nobody should lose everything because no one told them the wood pile was too close to the house. That's why I built EmberWalk. I'm entering Best Agentic Use-Case (Get It Fixed), Best Creative Build (Muse Image), Most Viral and the Community Vote.

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