# Html

> Create a self-contained HTML file for whatever the user is describing, in the effective HTML style. Use when the user wants an HTML artifact that isn't specifically a diagram or a plan — a report, explainer, comparison, deck, prototype, or anything else best delivered as one HTML file.

- **Type:** Skill
- **Install:** `agentstack add skill-plannotator-effective-html-html`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [plannotator](https://agentstack.voostack.com/s/plannotator)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [plannotator](https://github.com/plannotator)
- **Source:** https://github.com/plannotator/effective-html/tree/main/skills/html
- **Website:** https://plannotator.ai

## Install

```sh
agentstack add skill-plannotator-effective-html-html
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# HTML

Review the files throughout `references/html-effectiveness/`.

Create an HTML file for whatever the user is describing. Use the references as best you can to match alignment — style, density, and tone.

Always include dark mode: hand-rolled CSS variables on `:root` / `html.dark`, a small theme toggle button, `localStorage` persistence, and an apply-before-paint script in `` (default to `prefers-color-scheme`).

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [plannotator](https://github.com/plannotator)
- **Source:** [plannotator/effective-html](https://github.com/plannotator/effective-html)
- **License:** MIT
- **Homepage:** https://plannotator.ai

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-plannotator-effective-html-html
- Seller: https://agentstack.voostack.com/s/plannotator
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.