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Judge login: https://livelot.stream/dashboard/#token=judge-WPC-VRIFrt3P63-Q-KdopI-H LiveLot takes the admin out of selling on Facebook. THE PROBLEM Small sellers repeat the same work for every item: crop the photo, write the description, create the shop listing, then watch the comments and message each buyer. Two people can claim the last item, and a buyer who never pays can tie it up. WHAT IT DOES The seller shows an item to the camera, or uploads a photo, and says the price. SAM 3.1 finds the item so it can be cut out, and Muse Image 1.0 turns it into a clean product photo. Muse Spark 1.3 identifies the product, checks the details with web search and writes the listing. Muse Voice Transcribe 1.0 hears what the seller says. The seller checks the listing and presses Publish, and LiveLot posts it to their Facebook Page and creates the product in WooCommerce. The first person to comment "sold" holds the item and gets a pay link by private message. Later commenters join a waitlist, and a hold left unpaid for 15 minutes passes to the next person. Each buyer's items are bundled into one order. New shops can use it too, because posts don't need the 100 followers Meta requires for going live. HOW IT AVOIDS DOUBLE-SELLING Muse Spark reads comments in parallel, but LiveLot commits them strictly in arrival order, so a slow model answer can't cost the first buyer the item. Stock is taken synchronously in one always-on Node.js process on Google Cloud Run, each buyer has a lock, and a state machine checks every claim transition. There are 55 automated tests and a scripted demo show that runs through the real pipeline. WHAT HAS BEEN TESTED We ran a full sale on a real Facebook Page and WooCommerce store: listing from camera and mic, Page post, shop product, a "sold" comment from a personal profile, the order, the private reply and checkout through to Paid. The private reply went out 7 to 9 seconds after the comment. The first message landed in the buyer's Message requests > Spam folder, as they had never messaged the Page. The store uses a test payment method, so no money moved. Stripe card payments haven't been run. Facebook Live and Instagram are built but haven't been run on real accounts, because our Page is under the 100-follower limit and has no linked Instagram account. BUILT DURING THE HACKATHON The project started from an empty folder on 31 Oct 2026, and all the code in the repository was written during the build period. The README lists the third-party parts, including WooCommerce, WordPress, express and sharp. Meta tools used Muse Spark 1.3: vision, web search, listing writing, reading comments, show recap SAM 3.1: finding the item in the frame Muse Image 1.0: clean product photos Muse Voice Transcribe 1.0: the seller's speech Graph API: Page posts, reading comments, Messenger private replies, public comment replies