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

Monster Paws is a free website where you sponsor a real shelter animal. Your donation goes to the animal's shelter through Every.org, and we keep $0. As our thank-you, we try to paint the animal in watercolor from its listing photos, with the shelter's permission, and email you the paintings with a page you can share. Shelters have no budget to stand out, and their photos are messy: two cats on a chair, a litter, a hand in the frame. To paint the right animal, you first have to find it. During the hackathon we built that detection on SAM 3.1, a painting job that runs on a home GPU, the painting email, the share page and outreach to over 70 shelters. The first shelter said yes on November 4, and real donations now go from payment to a delivered painting with no one touching them. The browse pages, the painting workflow and our local detector came first, and the README's table separates old from new, commit by commit.