demoscene

Drop in a company's domain. Talk to it out loud to find out what that company actually does.

A demo of Voxtral and Mistral Large running on Cloudflare Workers with the Agents SDK.

Give a speech model your team's vocabulary and watch it spell Kysely, Inngest and Devstral right.

A side-by-side demo of context biasing in Voxtral Mini Transcribe V3 and Whisper Large V3 Turbo, running on Cloudflare Workers.

Poppy Demo Agent

A Personal Agent for Poppy, the Personal Agent Protocol, built alongside the tools we used to test it: a validator, a strict mock Company, an interop harness that runs other projects' code, and 64 written-up spec issues. It is for the draft's authors and for people implementing either side of the protocol.

Point your phone at a receipt. Get a checked, categorised expense a few seconds later.

A demo of Mistral OCR running on Cloudflare Workers.

Draw on the canvas, Clef guesses live. Try it: https://clef.jilles.fyi

Built with Clef, a decision model on Workers AI. React + Vite on Cloudflare Workers, scaffolded with C3.

The Cloudflare Artifacts Wiki

A tiny wiki where every page is its own Git repository, built on Cloudflare Artifacts.

npm install
npm run dev

npm run deploy

Point your camera at a menu or sign and read it in your language. The translation is drawn over the photo, in place.

A Cloudflare Worker serving a static frontend, with Mistral Document AI for OCR and a Mistral chat model for translation.

JevyChase

A little road trip through TypeSafe Jev’s structured decisions. TypeScript frontend, Vite, Hono, and Cloudflare Workers with an AI binding. Original generated vacation artwork lives in public/roadtrip.png.

かきごえ (kakigoe)

A written-voice board for when you can't speak. Type a message on your phone, tap "大きく表示", and it fills the screen in large black text on a white background so the person in front of you can read it.

Codex API executor on Cloudflare

[Codex API][#api] gives your application access to the Codex harness through a managed API. API manages sessions, orchestration, context compaction, and recovery while your application provides tools and Cloudflare Containers can be used as the execution environment.

A React + Three.js port using the twelve original Ballance courses and a WebAssembly build of the IVP physics SDK reference. Development and production builds now select IVP by default. ?physics=rapier selects the earlier comparison adapter. The source game pack and SDK are supplied separately.

A small React and Cloudflare Workers application for demonstrating how a coding agent can build, deploy, observe, and repair software through the Cloudflare MCP server:

https://github.com/cloudflare/mcp

The Edge Guestbook

A small, public guestbook demonstrating Cloudflare Python Workers + htmx 4. Python queries D1 and renders full pages and HTML fragments with Jinja2. htmx adds live search, validation swaps, message creation, reactions, loading states, and multi-region updates without any custom browser JavaScript.

An Astro and React event photobooth. Event pages resolve from local D1 at request time, and the booth flow runs in one hydrated React island:

1. Choose a New York scene.
2. Take or retake a photo with the browser camera.
3. Watch the photo upload, caricature generation, and postcard composition progress.
4. Review a postcard-style local preview.

AI Gateway Canvas

A visual, durable multimodal workflow builder for Cloudflare's unified AI catalog.

Site Doctor

Give an AI agent a public GitHub repo and one instruction. It edits the code and hands back a Git diff.

Step Right Up! 🎟️

A phone-controlled boardwalk arcade for Cloudflare event booths. Each television runs a persistent Display Station, Carnies open games remotely, players scan a rotating QR code, and their phones become motion controllers.

Palette Pocket

A tiny, dependency-free color palette generator deployed with Cloudflare Workers Static Assets.

Cloudflare Nostr Relay

A Buzz-compatible Nostr relay built on Cloudflare Workers, SQLite-backed Durable Objects, and hibernatable WebSockets.

opencode-on-cf

A focused experiment that runs the OpenCode V2 SDK (@opencode-ai/sdk/workerd) on Cloudflare with a single-user React chat UI.

WAF and Order

WAF and Order is a multi-zone bot-traffic analyst for a single Cloudflare account. It collects daily GraphQL analytics into zone-keyed R2 rollups, sends weekly email reports and signed single-use email approvals, applies only bounded Managed Challenge rules through a deterministic application-owned Rulesets client, monitors 24h and 7d full-day outcomes, and exposes Access-protected operator rollback.