150 points · 1 submission
with Cloudflare
Real-time multiplayer auction platform with an AI auctioneer that speaks. Users join rooms, create auctions, and bid against each other. An AI auctioneer powered by ElevenLabs TTS reacts to every bid with natural voice, builds tension through "going once... going twice...", and celebrates with a gavel slam and crowd cheer via the Sound Effects API. Users can bid by speaking — Realtime STT transcribes speech, Workers AI parses the dollar amount. Each room is a Cloudflare Durable Object managing bid state, timers, and WebSocket connections. Uses three ElevenLabs APIs (TTS, Realtime STT, Sound Effects) and three Cloudflare features (Durable Objects, Workers AI, Workers).
Submitted 29 Mar 2026