Html Coder

OrganizationPopular

TokenRhythm

html-coder

Expert HTML development skill for building web pages, forms, and interactive content. Use when creating HTML documents, structuring web content, implementing semantic markup, adding forms and media, working with HTML5 APIs, or needing HTML templates, best practices, and accessibility guidance. Supports modern HTML5 standards and responsive design patterns.

Overview

Publisher	TokenRhythm
Repository	`opensquilla`
Skill name	`html-coder`
Stars	7K
Forks	566
Bundled files	9
License	Apache-2.0
Links	Skill source Repository Homepage

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
9 bundled files
Scripts, templates, and references the model can read while it works. Files are read-only and never executed.
Open source
Published by TokenRhythm on GitHub. Read the source before you install it.

Installation

Install the Html Coder AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
Enable the skill in any chat where you want it available.

Store

Installed

Skills

Add skills

Import one or more skills from a public GitHub folder or a local .skill or .zip archive, or SKILL.md file.

From GitHub URLFrom .skill, .zip, or SKILL.md

GitHub repo or folder

https://github.com/TokenRhythm/opensquilla/tree/main/src/opensquilla/skills/bundled/html-coder

Points to a single skill folder, or any folder that contains multiple skills. Public repos only.

CancelContinue

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/TokenRhythm/opensquilla.git /tmp/opensquilla
mkdir -p .claude/skills
cp -r /tmp/opensquilla/src/opensquilla/skills/bundled/html-coder .claude/skills/html-coder

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Html Coder in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Html Coder on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Html Coder is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

HTML Coder Skill

Expert skill for professional HTML development with focus on semantic markup, accessibility, HTML5 features, and standards-compliant web content.

When to Use This Skill

Creating HTML documents with semantic structure
Building accessible forms with HTML5 validation
Implementing responsive markup and multimedia
Using HTML5 APIs (Canvas, SVG, Storage, Geolocation)
Troubleshooting validation or accessibility issues

OpenSquilla Webpage Delivery

For a new runnable webpage when workspace file-authoring tools are available:

Create a filesystem-safe, dedicated project subdirectory such as webpage-<topic-slug>/; never place a generated site directly in the workspace root.
Keep index.html, local CSS/JavaScript, and every local asset inside that project root, using browser-relative references.
Validate the finished project, then call open_workspace_preview with the entry file and the complete dedicated root:

json
{
  "path": "webpage-<topic-slug>/index.html",
  "bundle": "directory",
  "bundle_root": "webpage-<topic-slug>"
}

Do not bundle the entire workspace. When a caller explicitly requests source-only output, forbids tool calls, or supplies its own deterministic writer—as AwesomeWebpageMetaSkill does—follow that narrower caller contract instead. When file authoring or open_workspace_preview is unavailable, return only the requested guidance or source and do not claim that a runnable project was opened.

Core Capabilities

Semantic HTML: Document structure, content sections, accessibility-first markup
Forms: All input types, validation attributes, fieldsets, labels
Media: Responsive images, audio/video, Canvas, SVG
HTML5 APIs: Web Storage, Geolocation, Drag & Drop, Web Workers
Accessibility: ARIA, screen reader support, WCAG compliance

Essential References

Core documentation for HTML experts:

references/add-css-style.md - Add CSS via link tag, inline, or embedded in html
references/add-javascript.md - Add JavaScript via script src="link.js" tag, inline script, or embedded in html
references/attributes.md - HTML attribute essentials
references/essentials.md - Semantic markup, validation, responsive techniques
references/global-attributes.md - Complete global attribute information
references/glossary.md - Complete HTML element and attribute reference
references/standards.md - HTML5 specifications and standards

Best Practices

Semantic HTML - Use elements that convey meaning: <article>, <nav>, <header>, <section>, <footer>, not div soup.

Accessibility First - Proper heading hierarchy, alt text, labels with inputs, keyboard navigation, ARIA when needed.

HTML5 Validation - Leverage built-in validation (required, pattern, type="email") before JavaScript.

Responsive Images - Use <picture>, srcset, and loading="lazy" for performance.

Performance - Minimize DOM depth, optimize images, defer non-critical scripts, use semantic elements.

Quick Patterns

Semantic Page Structure

html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Page Title</title>
</head>
<body>
  <header><nav><!-- Navigation --></nav></header>
  <main><article><!-- Content --></article></main>
  <aside><!-- Sidebar --></aside>
  <footer><!-- Footer --></footer>
</body>
</html>

Accessible Form

html
<form method="post" action="/submit">
  <fieldset>
    <legend>Contact</legend>
    <label for="email">Email:</label>
    <input type="email" id="email" name="email" required
           pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,}$">
    <button type="submit">Send</button>
  </fieldset>
</form>

Responsive Image

html
<picture>
  <source media="(min-width: 1200px)" srcset="large.webp">
  <source media="(min-width: 768px)" srcset="medium.webp">
  <img src="small.jpg" alt="Description" loading="lazy">
</picture>

Troubleshooting

Validation: W3C Validator (validator.w3.org), check unclosed tags, verify nesting
Accessibility: Lighthouse audit, screen reader testing, keyboard nav, color contrast
Compatibility: Can I Use (caniuse.com), feature detection, provide fallbacks

Key Standards

WHATWG HTML Living Standard: https://html.spec.whatwg.org/
WCAG Accessibility: https://www.w3.org/WAI/WCAG21/quickref/
MDN Web Docs: https://developer.mozilla.org/en-US/docs/Web/HTML

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

Frequently asked questions

What does the Html Coder AI skill do?

Why use Html Coder on TypingMind?

Because you install it once and use it with any model. Html Coder is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Html Coder in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/TokenRhythm/opensquilla/tree/main/src/opensquilla/skills/bundled/html-coder. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Html Coder?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Html Coder?

As many as you like. As long as a model supports skills, you can use Html Coder with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Html Coder AI skill free?

Yes. It is published on GitHub by TokenRhythm under the Apache-2.0 license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

HTML Coder Skill

When to Use This Skill

OpenSquilla Webpage Delivery

Core Capabilities

Essential References

Best Practices

Quick Patterns

Semantic Page Structure

Accessible Form

Responsive Image

Troubleshooting

Key Standards

Bundled files

Frequently asked questions

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