Hack #2: Cloudflare

Vault: A Voice Escape Room. A concept. An experiment. A game. You are locked inside a glass vault. The walls are already moving. There are no buttons, no UI, only the Vault Guardian, a live ElevenLabs voice agent that protects the vault. Your voice is the key. It speaks a riddle. You answer out loud. Convince the Guardian you've earned it, and the vault shatters open. Fail, and the walls seal you in. Try it solo, or bring a friend in co-op. In co-op, the puzzle splits in two. Each player gets their own Guardian in a separate live conversation, each holding one word of the answer. Neither of you knows what the other was told. You have to piece it together, and solve both halves before the walls close on you both. Built on ElevenLabs Conversational AI for live, real-time voice agents. Cloudflare Durable Objects power the vault itself, a shared game server at the edge, owning the wall state, the timer, and keeping both players perfectly in sync. Your voice got you in. Now use it to get out. You have 100 seconds to live.

Clozze isn’t another AI tool. It’s an AI Real Estate transaction coordinator that actually executes real estate deals. Talk to it, and it doesn’t just respond, it researches properties in real time, generates listing content, drafts client communication, and creates tasks that move the deal forward. Powered by ElevenLabs for natural conversation and running on Cloudflare for real-time execution, Clozze turns fragmented workflows into one continuous system. This isn’t automation. It’s an assistant that thinks, acts, and keeps the transaction moving.

CallWiz is a voice scheduling assistant that finds meeting times across different booking systems like Calendly, Cal.com, Google Calendar, and Workmate, then books the multi-way meeting through a single conversation. It solves the painful back-and-forth of group scheduling by letting someone talk naturally, ask for different dates, and keep refining options without restarting the workflow. On the Cloudflare side, I use Workers and Durable Objects as our agent orchestration layer to maintain session state, coordinate tool calls across the conversation, paginate and refresh availability over time, and make the scheduling agent reliable across both web and phone voice channels. For ElevenLabs, I have a custom agent with initiation webhooks, a cloned voice (my own), client and server tools, and agent settings overrides. Tons of fun building this!

Ember is a therapeutic AI campfire companion built to address the accessibility gap in mental health support. Therapy is expensive, waitlists are long, and sometimes people just need someone to listen at 2am. Ember fills that gap — you click on an interactive 3D campfire built with Three.js, and a warm, supportive AI companion greets you by voice and has a natural spoken conversation with you while the fire reacts in real time, dimming when Ember speaks and flaring when it listens. The campfire metaphor is intentional: fire is universally calming and lowers the barrier to opening up compared to a clinical chat interface. ElevenLabs powers Ember's voice using the TTS API with the Brittney voice and the eleven_turbo_v2_5 model, proxied through a Cloudflare Worker endpoint that keeps the API key server-side. Voice is essential to the experience — reading text would break the campfire illusion, so Ember always speaks aloud. On the Cloudflare side, a Worker handles all routing including the ElevenLabs proxy and Agent SDK WebSocket connections, while a Durable Object gives each user their own persistent CampfireAgent instance that maintains full conversation history across sessions so Ember remembers returning users and greets them accordingly. Workers AI runs Llama 3.3 70B with a voice-optimized system prompt that keeps Ember warm, concise, and natural-sounding, all on Cloudflare's infrastructure with no external LLM API. Ember isn't a replacement for professional help — it includes crisis resource referrals like the 988 Lifeline — but it's a calming, judgment-free companion that's always there when you need it.

VocalProof is a Chrome extension that enables instant voice playback for any highlighted text on the web using ElevenLabs’ Text-to-Speech technology. It addresses the friction of traditional reading and existing TTS tools by providing a seamless, zero-interaction experience—users simply highlight text, and it is automatically converted into high-quality speech. The extension features a lightweight floating interface, real-time state feedback, and responsive controls such as immediate stop on deselection, creating an intuitive and dynamic user experience. Built for simplicity and speed, VocalProof demonstrates how advanced voice AI can be integrated directly into everyday browsing to enhance accessibility and information consumption.

Agents Bake Off is a live 1,000,000-pixel canvas where humans and AI agents solve per-pixel challenges to draw together in real time. Every pixel has a problem, and if an agent solves it, it gets to paint that pixel in a color of its choice. I used Cloudflare Workers, Durable Objects, and WebSockets to run the frontend and API at the edge, persist and shard the board state, and stream live updates across the canvas. I used ElevenLabs to generate spoken challenges for human players and AI-generated music for a hidden easter egg.

Trem is an autonomous, asynchronous AI video editing agent that turns raw footage into creator-ready edits like Auto Captions, Motion Tracking, Invisible Jump Cuts or full podcast edit. Built with Cloudflare and ElevenLabs, Trem lets users choose an editing technique, then handles the heavy lifting in the background, analyzing footage, with voice-guided creative direction, and assembling structured, story-driven results faster. Instead of manually piecing clips together, creators interact with Trem like a smart editing partner that understands both the footage and the final format.

Agora Live is a real-time AI debate platform where you click any country on a globe and two AI characters from that country start arguing about a real current news topic, in their own voice, accent, and slang. It makes current affairs actually engaging by turning live headlines into an entertaining argument between two opinionated characters who genuinely disagree, with a mic button so you can jump in and make your own case. ElevenLabs powers the whole voice layer: Conversational AI handles the Scholar agent as a live real-time voice session that listens and responds when you interrupt, while streaming TTS synthesises the Maverick agent sentence by sentence for near-zero gap between turns, with a distinct ElevenLabs voice matched to each character's persona. Every debate room runs on a Cloudflare Durable Object, a persistent stateful server on the edge that manages room state, enforces turn limits, proxies API calls so keys never reach the client, and sets cleanup alarms if a browser drops, with Cloudflare Workers handling the API, KV caching live news topics per country, and a Cron Trigger refreshing them every 48 hours.

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).

CallStorm is a short, dramatic demo of what an AI call center could look like if you built it from scratch on Cloudflare and gave it a voice with ElevenLabs. The idea is simple: Karen is furious because her overnight package never showed up. Marcus, an AI support agent, picks up the call, calms her down, checks the live tracking data, looks at policy, and fixes the issue on the spot with a replacement and a credit. The point of the demo is that it is not just a fake scripted animation. The call is orchestrated on Cloudflare, the tool calls are real, and the tracking response comes back as structured JSON in the UI while the conversation is happening. Under the hood, we used Cloudflare Workers, Durable Objects, the Agents SDK, Workers AI, D1, KV, and Queues to run the call flow and the tools. ElevenLabs handles the voices for Karen and Marcus. What makes the demo fun is that Marcus briefly breaks the fourth wall to explain the stack to the judges, then jumps straight back into handling Karen’s complaint.