Keystone

A local deck tool for technical talks, made to work with Claude Code. Each slide is
an HTML page (1280×720) with its own CSS and JavaScript, so it can hold a live three.js scene, a diagram that builds
step by step, or a real demo. You write what a slide must say, Claude styles it, and you correct it by drawing and
talking over your slides.

Features

• Presenter and editor in the browser, with live reload and an overview of every slide and deck.
• Slides styled by Claude: you write a brief (title, text, notes); Claude Code writes the slide from the style library.
• Feedback by drawing and talking: circle, point and speak over the slides; your voice is transcribed on your
  computer, and Claude turns it into tasks you can follow, answer and correct.
• Claude auto: Claude works on its own after each recording, and can say aloud what it did.
• Style library: brand rules, style guides, layouts and components, each with an example slide.
• Any language: a deck written in one language and translated into others, one HTML file per slide.
• 3D in slides: three.js figures with studio or outdoor light, ambient occlusion and soft shadows.
• Publishing: a deck becomes a static, read-only talk for any website or static host.
• Your decks and your brand stay yours, in a folder of their own, apart from the tool.
• macOS, Windows and Linux, with Node 22 and nothing else to install.

Start

git clone https://github.com/ancarmona/keystone.git
cd keystone
npm start

Then open http://localhost:4320: the guide to Keystone, a deck made with Keystone that shows how to create a deck,
write slides and work with Claude.

Everything else is in AGENTS.md: install options, decks and slides, feedback sessions, styles,
languages, 3D, publishing, tools and the API. It is written for you and for coding agents alike.

Licence

Apache License 2.0. Use, copy, change and sell Keystone and works based on it; keep the NOTICE
file with them, which credits Sentient Art. Third-party files: THIRD_PARTY.md.

Made by Sentient Art