Works with the AI tools you already use
Nex Single File Html Demo
by Nex AI
Generates premium, single-file HTML landing pages with inline assets, advanced SEO schema, and a hardened CSP.
Free
See it in action
You say
Build a one-file demo site for a bakery in Gent. I need it to be static, premium style, with full SEO schema and a tight CSP for my local server.
Your agent does
Generated index.html. Features:
- Inline CSS with glass-morphism and particle effects.
- JSON-LD @graph for 'Bakery' in Gent.
- Strict CSP excluding Firebase origins.
- Mobile-ready glass nav. Deploy by copying this file to your web root. No build step required.
About this skill
The problem
Building high-end client demos usually requires a build step, dependencies, and complex hosting. Developers need a way to ship premium, portable landing pages that require zero installation and deploy via simple file copy.
What it does
- Generates a single, self-contained
index.htmlwith all CSS and JS inlined. - Builds a complete JSON-LD
@graphschema for SEO, AEO, and GEO optimization. - Implements a strict Content-Security-Policy (CSP) meta tag locked to specific origins.
- Includes premium UI features like glass-morphism, custom cursors, and particle ambience.
- Optionally integrates an inline Firebase admin layer for client-side content editing.
Frameworks & tools
Vanilla HTML5, CSS3 with design-token variables, Vanilla JavaScript, JSON-LD, and optional Firebase (Auth, Firestore, Storage).
Why this beats prompting it yourself
Creating a truly portable file that maintains a strict CSP and valid schema graph is tedious and error-prone. This skill automates the boilerplate of premium aesthetics and deep SEO technicals that are difficult to prompt consistently from scratch.
Use cases
- Create high-fidelity pitch demos that run on any static server or local machine.
- Build ultra-lightweight landing pages with advanced schema for search ranking.
- Deploy client-editable prototypes without setting up a full CMS.
- Generate secure, single-page sites with a hardened CSP and no build pipeline.
Known limitations
Not intended for multi-page applications or complex routing. The Firebase layer is for light content editing, not a full-scale CMS replacement.
How to install
Drop the file into your AI Agent. Works with Claude, Cursor, ChatGPT, and 20+ more.
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Creator
300 skills on Agensi
Founder of Nex AI. I build production-grade Claude Skills from systems that actually run: multi-tenant SaaS, Telegram agents, Raspberry Pi infrastructure, 3D multiplayer rooms. Every skill ships battle-tested patterns, not theory. 33+ open source skills published, commercial catalog growing.
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