Effective HTML

Focused agent skills for creating useful, self-contained HTML artifacts, from low-fidelity wireframes to working interactive prototypes.

Fat artifacts + fat context

Modern models can do a lot. Give them plenty of useful references and use artifacts to show what you mean. HTML can visualize almost anything, often more clearly than a wall of text. Your prompt can simply point to the artifacts, repositories, and folders that carry the context.

Note

You can use this repo without installing anything. Treat it as a reference first and an installable skill collection second. See the Effective HTML guide.

svg_small.mp4

Render and annotate local HTML with Plannotator.

Skill references

The repo includes six optional skills for pragmatic visual artifacts.

Skill	Use it for
html	Broad HTML requests, mixed artifacts, reports, explainers, presentations, landing pages, tools, and routing to a specialist
design-artifact	Subject-specific creative direction for any HTML artifact without imposing a reusable house style
html-wireframe	Low-fidelity layout directions that test content, hierarchy, navigation, flows, and responsive structure
html-prototype	Working prototypes with realistic states, interaction, keyboard support, and responsive behavior
html-plan	Plans, roadmaps, rollouts, and implementation sequences that preserve source commitments
html-diagram	Architecture, sequence, process, state, hierarchy, timeline, and system diagrams

Practical guide: HTML Wireframes and Prototypes for Coding Agents.

Install

Install the collection when you want these references available to your agent as reusable workflows:

npx skills add plannotator/effective-html

List or install individual skills:

npx skills add plannotator/effective-html --list
npx skills add plannotator/effective-html --skill design-artifact
npx skills add plannotator/effective-html --skill html-wireframe
npx skills add plannotator/effective-html --skill html-prototype

Claude Code plugin

/plugin marketplace add plannotator/effective-html
/plugin install plannotator-effective-html@effective-html

Codex plugin

codex plugin marketplace add plannotator/effective-html
codex plugin add plannotator-effective-html@effective-html

How the skills work

The skills separate creative freedom from reliability:

• Visual direction comes from the conversation, project, audience, and subject.
• design-artifact provides a reusable design process without prescribing a reusable look.
• Wireframes stay intentionally unfinished so reviewers focus on structure.
• Prototypes implement one credible flow and its relevant states.
• Plans preserve source commitments.
• Diagrams choose a visual model and rendering method that fit the relationship being explained.
• Every artifact is responsive, accessible, self-contained, and verified in a browser.

Detailed guidance lives only where it is needed. The broad html skill routes the work, design-artifact supplies optional creative direction, and specialist skills own fidelity and behavior. Each skill remains independently usable.

This project was inspired by Thariq Shihipar's The unreasonable effectiveness of HTML.

Create a shareable link for an HTML file with tot.