Welcome
Geppetto is a place to build and take care of websites.
If you've never written code, Geppetto lets you build and ship a real website that looks the way you want. You get a simple CMS with live preview, real working forms and a straightforward blogging platform.
If you write code for a living, you'll find a fast, no-lock-in workshop based on HTML. A lot of little details from a developer who really cares about your experience. No build or dev-ops issues, no CMS boilerplate and truly re-usable components.
What it is
Geppetto is a collection of three editors, each focused on a specific task.
Content Sidebar
A customizable content sidebar sits next to a live preview of your site. You define exactly what editors can change using a collection of 12 field types. Editors see the preview update instantly as changes are made.
Theme Editor
Refine the look of your site with the theme editor. It gives you control over color, typography, spacing and a collection of UI elements. Beyond convenience the theme editor gives your site consistency and makes what you build re-usable.
Block Editor
Geppetto builds sites out of HTML blocks. You edit these blocks in the dedicated block editor. It's a code editor AND sidebar creator next to a live preview, so you see your changes instantly. The entire block editing experience on one screen.
AI Features
Geppetto's AI features make these editors accessible to anyone. If you don't write HTML you can generate a block from a prompt or an image, then refine it in the block editor using the AI coding assistant. Changes are scoped to the block so the AI can't change anything else.
Working as a Team
If you're working on a site as a team you decide who gets access to each of these tools. Permissions draw common sense boundaries. A contributor can change a page but they can't make that change live, instead they submit a publish request.
Working with AI Agents
Geppetto features a comprehensive API that lets you do what you can do in the editor with code. This allows you to make content edits, or create complete sites without ever logging in.
If you're generating sites with Claude Code or another AI agent they will love the structure of building in Geppetto, and you will love being able to make edits in the editor.