Demoday
Built for YC founders

Beautiful clickable demos.

Delight customers with what you do in seconds. One-click create from your codebase with Claude Code, Cursor, and Codex.

01

Create great docs

Write MDX pages with a clean, opinionated reading experience out of the box.

How it works

Create first demo in 2 minutes.

01

Paste into your agent

Drop one command into Claude Code, Cursor, or Codex. It installs the skill and reads your codebase.

02

Confirm in chat

Claude proposes a demo tailored to your product. One click and it starts building.

03

Ship the demo

You get one self-contained HTML file and a single iframe. Drop it on any landing page.

FAQ

Questions, briefly answered.

What is a clickable demo?

An interactive walkthrough visitors can click through right on your landing page — no video, no signup. Demoday ships it as a single self-contained HTML file.

Where can I use it?

Anywhere you can paste a single <iframe>tag — Webflow, Framer, WordPress, Next.js, Astro, Ghost, MDX, or plain HTML.

How do I update it?

Re-run the skill. The demo is a file in your repo, so updating it is a normal code change — reviewable via pull request.

How do people solve this today?

Today, visitors churn before they see the product. Authentication is friction, screen recordings go stale, and animations are not clickable.

Ready when you are

It's open source.