Demoday
Demoday is an open-source coding agent skill for turning a product into a clickable demo that can be embedded on a landing page. It is built for YC founders and is described as a way to show what a product does in seconds, without relying on video or signup flows.
The workflow starts with a single command, npx @demoday/skill@latest init, run from a terminal. Demoday works with Claude Code, Cursor, and Codex: it installs the skill, reads the codebase, and then proposes a demo tailored to the product. After a confirmation in chat, it begins building the demo. The result is a self-contained HTML file and a single iframe, which can be dropped onto a landing page.
The site says the demo can be used anywhere a single iframe tag can be pasted, including Webflow, Framer, WordPress, Next.js, Astro, Ghost, MDX, and plain HTML. It also says the demo is a file in the repository, so updating it is a normal code change that can be reviewed through a pull request. The page describes the output as an interactive walkthrough visitors can click through directly on the landing page.
Overview
6 featuresDemoday sits in PulseGate's CLI tools & terminal category. It focuses on creating interactive, embeddable product demos from codebases without manual setup. Demoday is an open-source project aimed at developers and product teams needing interactive demos. The project is open source (Open Source). It ships for the command line and embeddable surfaces, and it can be self-hosted.
It is developed by Open Source Maintainers, and it first shipped in 2026. The project is developed in the open on GitHub with 30 commits in the last 90 days. Key capabilities include embeddable demos, CLI integration, and Self-contained HTML output.
Summary written by a language model from the project’s public pages.
- Embeddable demos
- CLI integration
- Self-contained HTML output
- Agent skill support
- One-click demo creation
- Open source
Built with & integrations
- Next.js
- /_next/static/ in the HTML · __next_f in the HTML
- Vercel
- x-vercel-id header · x-vercel-cache header
Trust & compliance
Indexing history
1What PulseGate has recorded for this listing
Frequently asked questions about Demoday
- What is Demoday?
- Demoday focuses on creating interactive, embeddable product demos from codebases without manual setup. It is catalogued under CLI tools & terminal on PulseGate.
- Who is Demoday for?
- Demoday is an open-source project built for developers and product teams needing interactive demos.
- Does Demoday have a free plan?
- Yes — Demoday is open source under the Open Source license and free to use.
- What platforms does Demoday run on?
- Demoday runs on the command line and embeddable surfaces. It can also be self-hosted.
- Is Demoday still maintained?
- The GitHub repository shows 30 commits in the last 90 days.
- Who develops Demoday?
- Demoday is developed by Open Source Maintainers.
- How long has Demoday been around?
- Demoday first shipped in 2026.
- Is Demoday open source?
- Yes — Demoday is open source under the Open Source license, developed on GitHub.
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