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.
Build the distributable and launch a local preview server to see the website
Install Preview
$ npx skills add rainxchzed/RikkaUi --skill preview -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install rainxchzed/RikkaUi preview --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/rainxchzed/RikkaUi.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/preview .claude/skills/preview && 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 "preview" agent skill from https://github.com/rainxchzed/RikkaUi/tree/main/.claude/skills/preview into .claude/skills/preview/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "preview", 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/rainxchzed/RikkaUi/tree/main/.claude/skills/previewType 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 rainxchzed/RikkaUi --skill preview -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install rainxchzed/RikkaUi preview --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rainxchzed/RikkaUi.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/preview .agents/skills/preview && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "preview" agent skill from https://github.com/rainxchzed/RikkaUi/tree/main/.claude/skills/preview into .agents/skills/preview/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "preview", 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 rainxchzed/RikkaUi --skill preview -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install rainxchzed/RikkaUi preview --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rainxchzed/RikkaUi.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/preview .cursor/skills/preview && 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 "preview" agent skill from https://github.com/rainxchzed/RikkaUi/tree/main/.claude/skills/preview into .cursor/skills/preview/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "preview", 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/rainxchzed/RikkaUi.git --path .claude/skills/preview--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 rainxchzed/RikkaUi --skill preview -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install rainxchzed/RikkaUi preview --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rainxchzed/RikkaUi.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/preview .gemini/skills/preview && 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 "preview" agent skill from https://github.com/rainxchzed/RikkaUi/tree/main/.claude/skills/preview into .gemini/skills/preview/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "preview", 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 rainxchzed/RikkaUi previewInstalls 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 rainxchzed/RikkaUi --skill preview -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/rainxchzed/RikkaUi.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/preview .github/skills/preview && 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 "preview" agent skill from https://github.com/rainxchzed/RikkaUi/tree/main/.claude/skills/preview into .github/skills/preview/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "preview", 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 rainxchzed/RikkaUi --skill preview -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install rainxchzed/RikkaUi preview --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/rainxchzed/RikkaUi.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/preview .opencode/skills/preview && 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 "preview" agent skill from https://github.com/rainxchzed/RikkaUi/tree/main/.claude/skills/preview into .opencode/skills/preview/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "preview", 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
preview- GitHub stars
- 177
- Token cost
- ~293 tokens
- SKILL.md length
- 119 words
- Files
- 1
- Skills in repo
- 3
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Build the distributable and launch a local preview server to see the website
- Works in 4 steps: Build the distributable → Start the preview server using the… → Take a screenshot after the page loads… → …
- Frontend & Design work in your project
- SKILL.md covers Steps and Notes
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Preview is an agent skill from rainxchzed/RikkaUi. Build the distributable and launch a local preview server to see the website
Its SKILL.md is about 290 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Frontend & Design. The repository describes itself as: RikkaUI — composing elements into harmony. Shadcn/UI Inspired component library & design system for Jetpack Compose. The licence is Apache-2.0.
When your agent uses it
- Frontend & Design work in your project
Example prompts
- “/preview”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Build the distributable
- Start the preview server using the launch configuration
- Take a screenshot after the page loads to show the user what it looks like.
- If the user asks to scroll or interact, use preview MCP tools (click, screenshot, etc.)
What it can do on your machine
Read from SKILL.md and the folder at commit 43ac1bc. 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 (its code samples are bash).
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
Preview loads about 293 tokens when it runs. Until then it costs about 21 tokens; SKILL.md has 119 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 rainxchzed/RikkaUi at commit 43ac1bc, republished under its Apache-2.0 licence (© rainxchzed). 119 words, ~293 tokens.
Download SKILL.mdSave it as
.claude/skills/preview/SKILL.md (or your agent's skills folder).- name
- preview
- description
- Build the distributable and launch a local preview server to see the website
- trigger
- when user says "preview", "show me", "let me see", "run the website", "start the server"
Preview Skill
Build and preview the RikkaUI showcase website.
Steps
Build the distributable:
bash ./gradlew :composeApp:wasmJsBrowserDevelopmentExecutableDistributionWait for BUILD SUCCESSFUL (timeout: 180s).
Start the preview server using the launch configuration:
- The project has a
launch.jsonconfig namedrikka-preview - It serves
composeApp/build/dist/wasmJs/developmentExecutableon port 3000 - Use the Claude Preview MCP:
preview_startwith urlhttp://localhost:3000
- The project has a
Take a screenshot after the page loads to show the user what it looks like.
If the user asks to scroll or interact, use preview MCP tools (click, screenshot, etc.)
Notes
- The website is a Compose Wasm canvas app — CSS selectors don't work,
window.scrollBy()doesn't scroll the Compose canvas - To navigate, use keyboard events or page reload
- The preview server must be stopped before rebuilding
© rainxchzed, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .claude/skills/preview of rainxchzed/RikkaUi.
Open the folder on GitHubat commit 43ac1bc
Compare with similar skills
Preview 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 |
|---|---|---|---|---|---|---|
| Preview this skillrainxchzed/RikkaUi | 177 | — | ~293 | Automated safety check: Pass | Apache-2.0 | |
| Web Artifacts Builderanthropics/skills | 180k | 41 repos | ~769 | Automated safety check: Pass | Apache-2.0 | |
| React Doctormakeplane/plane | 61k | 12 repos | ~657 | Automated safety check: Pass | AGPL-3.0 | |
| 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 | |
| Web Interface Guidelines Reviewervercel-labs/openreview | 1.7k | 98 repos | ~308 | Automated safety check: Pass | None |
Similar skills
- Official
React Doctor
makeplane/plane
Scans React code for lint, accessibility, bundle size and architecture issues, reports a health score and checks that changes do not lower it.
Impeccable
bestofjs/bestofjs
A skill your agent uses when the user wants to design, redesign, shape, critique, audit, polish, clarify, distill, harden, optimize, adapt, animate, colorize, extract, or otherwise improve a…
Figma Design System Builder
warpdotdev/warp
Builds or updates a design system in Figma from a codebase in ordered phases: discovery, variables and tokens, components, theming and documentation, with checkpoints.
- Official
Web Interface Guidelines Reviewer
vercel-labs/openreview
Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my…
Tailwindcss Development
anonaddy/anonaddy
Always invoke when the user's message includes 'tailwind' in any form.
More from rainxchzed/RikkaUi
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Scaffold a new RikkaUI component following all project conventions
Rikka Conventions
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RikkaUI design system conventions. An agent skill from rainxchzed/RikkaUi.
Related
Categories
Questions about Preview
What does Preview do?
Build the distributable and launch a local preview server to see the website. Preview is an agent skill from rainxchzed/RikkaUi.
When should I use Preview?
Preview fits situations like: frontend & Design work in your project.
How do I install Preview in Claude Code?
Run `npx skills add rainxchzed/RikkaUi --skill preview -a claude-code`. Or copy the skill folder (.claude/skills/preview in rainxchzed/RikkaUi) into .claude/skills/preview in your project. Claude Code loads it when a task matches its description.
How do I install Preview in Codex?
Run `npx skills add rainxchzed/RikkaUi --skill preview -a codex`. Or copy the skill folder (.claude/skills/preview in rainxchzed/RikkaUi) into .agents/skills/preview in your project. Codex loads it when a task matches its description.
Can I use Preview 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 rainxchzed/RikkaUi --skill preview -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/preview, .gemini/skills/preview, .github/skills/preview and .opencode/skills/preview in your project.
What does Preview need to run?
SKILL.md names no scripts, command-line tools or credentials: Preview is instructions for the agent only.
Does Preview 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 Preview 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 Preview use?
Preview is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Preview use?
About 293 tokens (SKILL.md is roughly 1.2k 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 Preview?
Skills that share tags, products or a category with Preview: Web Artifacts Builder (anthropics/skills, 180k stars), React Doctor (makeplane/plane, 61k stars), Impeccable (bestofjs/bestofjs, 3.1k stars) and Figma Design System Builder (warpdotdev/warp, 65k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Preview?
rainxchzed (a GitHub user) maintains it in rainxchzed/RikkaUi, which has 177 GitHub stars. The repository holds 3 skills in this directory. The repository was last updated on September 18, 2026.
Source: rainxchzed/RikkaUi on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.