Web Artifacts Builder
anthropics/skills
Builds multi-component claude.ai HTML artifacts as a small React, TypeScript and Tailwind project, then bundles it into one shareable HTML file.
Direct-invocation specialist for clear, self-contained HTML plans that preserve source material while improving hierarchy, sequence, ownership, dependencies, and reviewability.
Install HTML Plan
$ npx skills add plannotator/effective-html --skill html-plan -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install plannotator/effective-html html-plan --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/plannotator/effective-html.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/html-plan .claude/skills/html-plan && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "html-plan" agent skill from https://github.com/plannotator/effective-html/tree/main/skills/html-plan into .claude/skills/html-plan/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "html-plan", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/plannotator/effective-html/tree/main/skills/html-planType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add plannotator/effective-html --skill html-plan -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install plannotator/effective-html html-plan --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/plannotator/effective-html.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/html-plan .agents/skills/html-plan && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "html-plan" agent skill from https://github.com/plannotator/effective-html/tree/main/skills/html-plan into .agents/skills/html-plan/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "html-plan", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add plannotator/effective-html --skill html-plan -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install plannotator/effective-html html-plan --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/plannotator/effective-html.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/html-plan .cursor/skills/html-plan && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "html-plan" agent skill from https://github.com/plannotator/effective-html/tree/main/skills/html-plan into .cursor/skills/html-plan/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "html-plan", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/plannotator/effective-html.git --path skills/html-plan--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add plannotator/effective-html --skill html-plan -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install plannotator/effective-html html-plan --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/plannotator/effective-html.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/html-plan .gemini/skills/html-plan && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "html-plan" agent skill from https://github.com/plannotator/effective-html/tree/main/skills/html-plan into .gemini/skills/html-plan/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "html-plan", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install plannotator/effective-html html-planInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add plannotator/effective-html --skill html-plan -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/plannotator/effective-html.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/html-plan .github/skills/html-plan && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "html-plan" agent skill from https://github.com/plannotator/effective-html/tree/main/skills/html-plan into .github/skills/html-plan/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "html-plan", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add plannotator/effective-html --skill html-plan -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install plannotator/effective-html html-plan --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/plannotator/effective-html.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/html-plan .opencode/skills/html-plan && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "html-plan" agent skill from https://github.com/plannotator/effective-html/tree/main/skills/html-plan into .opencode/skills/html-plan/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "html-plan", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
html-plan- GitHub stars
- 3.6k
- Token cost
- ~614 tokens
- SKILL.md length
- 285 words
- Files
- 2
- Skills in repo
- 4
- Repo updated
- First seen
- Licence
- MIT
At a glance
Direct-invocation specialist for clear, self-contained HTML plans that preserve source material while improving hierarchy, sequence, ownership, dependencies, and reviewability.
- The user explicitly invokes html-plan
- SKILL.md covers Shape the document around the…, Preserve traceability and Build and verify
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- The broad html skill routes a plan request here
What it does
HTML Plan is an agent skill from plannotator/effective-html. Direct-invocation specialist for clear, self-contained HTML plans that preserve source material while improving hierarchy, sequence, ownership, dependencies, and reviewability. Use when the user explicitly invokes html-plan or the broad html skill routes a plan request here. Do not activate independently from a general request.
Its SKILL.md is about 610 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).
It sits in Frontend & Design. The repository describes itself as: Agent skills for useful HTML artifacts, wireframes, interactive prototypes, plans, and diagrams. The licence is MIT.
When your agent uses it
- The user explicitly invokes html-plan
- The broad html skill routes a plan request here
Example prompts
- “/html-plan”
What it can do on your machine
Read from SKILL.md and the folder at commit 2ac1dfe. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
HTML Plan loads about 614 tokens when it runs. Until then it costs about 85 tokens; SKILL.md has 285 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from plannotator/effective-html at commit 2ac1dfe, republished under its MIT licence (© plannotator). 285 words, ~614 tokens.
Download SKILL.mdSave it as
.claude/skills/html-plan/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- html-plan
- description
- Direct-invocation specialist for clear, self-contained HTML plans that preserve source material while improving hierarchy, sequence, ownership, dependencies, and reviewability. Use when the user explicitly invokes html-plan or the broad html skill routes a plan request here. Do not activate independently from a general request.
HTML Plan
Turn source material into a plan people can inspect and act on. Preserve the user's scope, ordering, commitments, and terminology unless they ask for broader synthesis.
Shape the document around the work
Read the conversation, project instructions, and supplied plan before designing. Match an existing design language when one is present. Otherwise derive a quiet, workmanlike direction from the audience and subject.
When design-artifact is available, read its
fundamentals to make that direction intentional. Keep this skill's traceability
and source-preservation rules authoritative; creative direction must not
inflate the plan into a dashboard or campaign page.
Decide what the plan actually needs:
- phases or sequence;
- status and decision points;
- owners and collaborators;
- dependencies and risks;
- acceptance checks;
- unresolved questions.
Do not add a timeline, progress percentage, status badge, or dashboard summary unless the source supports it. Improve grammar and structure without inflating an implementation plan into a strategy document.
Preserve traceability
- Keep source commitments recognizable.
- Separate accepted decisions from assumptions and open questions.
- Show sequence and dependency only where they are real.
- Use tables for exact mappings, comparisons, or repeated fields.
- Use a flow or timeline only when it makes order materially easier to understand.
- Keep long prose readable instead of forcing every paragraph into a card.
Build and verify
Deliver one responsive, accessible, self-contained HTML file. Use semantic headings, lists, tables, and landmarks. Keep essential CSS and JavaScript inline, avoid external services, and make any navigation or disclosure keyboard-operable.
Inspect the result at wide and narrow widths. Check that no commitment disappeared, that stages remain in the intended order, that ownership and dependencies are legible, and that long content does not overflow.
Return the absolute path and note any structural interpretation you introduced.
© plannotator, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file in skills/html-plan of plannotator/effective-html.
- SKILL.md
- agents/openai.yaml
Open the folder on GitHubat commit 2ac1dfe
Compare with similar skills
HTML Plan next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| HTML Plan this skillplannotator/effective-html | 3.6k | — | ~614 | Automated safety check: Pass | MIT | |
| Web Artifacts Builderanthropics/skills | 180k | 40 repos | ~769 | Automated safety check: Pass | Apache-2.0 | |
| React Doctormakeplane/plane | 60k | 12 repos | ~657 | Automated safety check: Pass | AGPL-3.0 | |
| React Composition Patternsvercel-labs/openreview | 1.7k | 58 repos | ~721 | Automated safety check: Pass | MIT | |
| Impeccablebestofjs/bestofjs | 3.1k | 27 repos | ~2.6k | Automated safety check: Pass | MIT | |
| Figma Design System Builderwarpdotdev/warp | 65k | 2 repos | ~4.4k | Automated safety check: Pass | AGPL-3.0 |
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Categories
Questions about HTML Plan
What does HTML Plan do?
Direct-invocation specialist for clear, self-contained HTML plans that preserve source material while improving hierarchy, sequence, ownership, dependencies, and reviewability. HTML Plan is an agent skill from plannotator/effective-html. Direct-invocation specialist for clear, self-contained HTML plans that preserve source material while improving hierarchy, sequence, ownership, dependencies, and reviewability.
When should I use HTML Plan?
HTML Plan fits situations like: the user explicitly invokes html-plan; the broad html skill routes a plan request here.
How do I install HTML Plan in Claude Code?
Run `npx skills add plannotator/effective-html --skill html-plan -a claude-code`. Or copy the skill folder (skills/html-plan in plannotator/effective-html) into .claude/skills/html-plan in your project. Claude Code loads it when a task matches its description.
How do I install HTML Plan in Codex?
Run `npx skills add plannotator/effective-html --skill html-plan -a codex`. Or copy the skill folder (skills/html-plan in plannotator/effective-html) into .agents/skills/html-plan in your project. Codex loads it when a task matches its description.
Can I use HTML Plan in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add plannotator/effective-html --skill html-plan -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/html-plan, .gemini/skills/html-plan, .github/skills/html-plan and .opencode/skills/html-plan in your project.
What does HTML Plan need to run?
SKILL.md names no scripts, command-line tools or credentials: HTML Plan is instructions for the agent only.
Does HTML Plan access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is HTML Plan safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does HTML Plan use?
HTML Plan is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does HTML Plan use?
About 614 tokens (SKILL.md is roughly 2.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to HTML Plan?
Skills that share tags, products or a category with HTML Plan: Web Artifacts Builder (anthropics/skills, 180k stars), React Doctor (makeplane/plane, 60k stars), React Composition Patterns (vercel-labs/openreview, 1.7k stars) and Impeccable (bestofjs/bestofjs, 3.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains HTML Plan?
plannotator (a GitHub organization) maintains it in plannotator/effective-html, which has 3,555 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on September 14, 2026.
Source: plannotator/effective-html on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.