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.
Take a screenshot of the running Mycelium app, or of CLI output rendered as a terminal card, or record a short video of a flow with a visible cursor and click/zoom animations.
Install Screenshot
$ npx skills add mycelium-io/mycelium --skill screenshot -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mycelium-io/mycelium screenshot --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/mycelium-io/mycelium.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/screenshot .claude/skills/screenshot && 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 "screenshot" agent skill from https://github.com/mycelium-io/mycelium/tree/main/.claude/skills/screenshot into .claude/skills/screenshot/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "screenshot", 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/mycelium-io/mycelium/tree/main/.claude/skills/screenshotType 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 mycelium-io/mycelium --skill screenshot -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mycelium-io/mycelium screenshot --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mycelium-io/mycelium.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/screenshot .agents/skills/screenshot && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "screenshot" agent skill from https://github.com/mycelium-io/mycelium/tree/main/.claude/skills/screenshot into .agents/skills/screenshot/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "screenshot", 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 mycelium-io/mycelium --skill screenshot -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mycelium-io/mycelium screenshot --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mycelium-io/mycelium.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/screenshot .cursor/skills/screenshot && 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 "screenshot" agent skill from https://github.com/mycelium-io/mycelium/tree/main/.claude/skills/screenshot into .cursor/skills/screenshot/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "screenshot", 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/mycelium-io/mycelium.git --path .claude/skills/screenshot--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 mycelium-io/mycelium --skill screenshot -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mycelium-io/mycelium screenshot --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mycelium-io/mycelium.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/screenshot .gemini/skills/screenshot && 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 "screenshot" agent skill from https://github.com/mycelium-io/mycelium/tree/main/.claude/skills/screenshot into .gemini/skills/screenshot/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "screenshot", 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 mycelium-io/mycelium screenshotInstalls 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 mycelium-io/mycelium --skill screenshot -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mycelium-io/mycelium.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/screenshot .github/skills/screenshot && 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 "screenshot" agent skill from https://github.com/mycelium-io/mycelium/tree/main/.claude/skills/screenshot into .github/skills/screenshot/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "screenshot", 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 mycelium-io/mycelium --skill screenshot -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mycelium-io/mycelium screenshot --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mycelium-io/mycelium.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/screenshot .opencode/skills/screenshot && 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 "screenshot" agent skill from https://github.com/mycelium-io/mycelium/tree/main/.claude/skills/screenshot into .opencode/skills/screenshot/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "screenshot", 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
screenshot- GitHub stars
- 119
- Token cost
- ~2k tokens
- SKILL.md length
- 891 words
- Files
- 1
- Skills in repo
- 7
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Take a screenshot of the running Mycelium app, or of CLI output rendered as a terminal card, or record a short video of a flow with a visible cursor and click/zoom animations.
- You need to SEE the UI — verifying a frontend change
- SKILL.md covers First run on a machine, Screenshot the app, Check a layout across… and Drive a flow, then look, plus 5 more sections
- Calls node and pnpm
- Checking a layout at phone/tablet/desktop widths
What it does
Screenshot is an agent skill from mycelium-io/mycelium. Take a screenshot of the running Mycelium app, or of CLI output rendered as a terminal card, or record a short video of a flow with a visible cursor and click/zoom animations. Use when you need to SEE the UI — verifying a frontend change, checking a layout at phone/tablet/desktop widths, driving a multi-step flow and looking at each step, producing an image of a mycelium command's output for a doc or PR, or showing a flow in motion. Triggers on "screenshot", "show me the app", "what does it look like", "check the…
Its SKILL.md is about 2k 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: Multi-agent coordination + persistent memory, semantic negotiation, async rooms, and a shared knowledge graph.
When your agent uses it
- You need to SEE the UI — verifying a frontend change
- Checking a layout at phone/tablet/desktop widths
- Driving a multi-step flow and looking at each step
- Producing an image of a mycelium commands output for a doc
Example prompts
- “s output for a doc or PR, or showing a flow in motion. Triggers on”
- “show me the app”
- “what does it look like”
- “/screenshot”
What it can do on your machine
Read from SKILL.md and the folder at commit 6a814e1. 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
Shell commands in SKILL.md call:
nodepnpm
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use pnpm, which can reach the network depending on how they are called.
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
Screenshot loads about 2k tokens when it runs. Until then it costs about 163 tokens; SKILL.md has 891 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 891 words (~1,981 tokens).
“shotkit/ is this repo's camera. It holds a browser open in a background daemon, so the first shot costs ~2s and every later one ~150ms.”
- name
- screenshot
Files
Just SKILL.md in .claude/skills/screenshot of mycelium-io/mycelium.
Open the folder on GitHubat commit 6a814e1
Compare with similar skills
Screenshot 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 |
|---|---|---|---|---|---|---|
| Screenshot this skillmycelium-io/mycelium | 119 | — | ~2k | Automated safety check: Pass | Custom licence | |
| Web Artifacts Builderanthropics/skills | 180k | 40 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 | 26 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 | 97 repos | ~308 | Automated safety check: Pass | None |
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Related
Categories
Questions about Screenshot
What does Screenshot do?
Take a screenshot of the running Mycelium app, or of CLI output rendered as a terminal card, or record a short video of a flow with a visible cursor and click/zoom animations. Screenshot is an agent skill from mycelium-io/mycelium. Take a screenshot of the running Mycelium app, or of CLI output rendered as a terminal card, or record a short video of a flow with a visible cursor and click/zoom animations.
When should I use Screenshot?
Screenshot fits situations like: you need to SEE the UI — verifying a frontend change; checking a layout at phone/tablet/desktop widths; driving a multi-step flow and looking at each step; producing an image of a mycelium commands output for a doc.
How do I install Screenshot in Claude Code?
Run `npx skills add mycelium-io/mycelium --skill screenshot -a claude-code`. Or copy the skill folder (.claude/skills/screenshot in mycelium-io/mycelium) into .claude/skills/screenshot in your project. Claude Code loads it when a task matches its description.
How do I install Screenshot in Codex?
Run `npx skills add mycelium-io/mycelium --skill screenshot -a codex`. Or copy the skill folder (.claude/skills/screenshot in mycelium-io/mycelium) into .agents/skills/screenshot in your project. Codex loads it when a task matches its description.
Can I use Screenshot 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 mycelium-io/mycelium --skill screenshot -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/screenshot, .gemini/skills/screenshot, .github/skills/screenshot and .opencode/skills/screenshot in your project.
What does Screenshot need to run?
Going by SKILL.md and its folder, Screenshot needs the command-line tools its instructions call (node and pnpm).
Does Screenshot 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 Screenshot 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 Screenshot use?
Screenshot has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Screenshot use?
About 2k tokens (SKILL.md is roughly 7.9k 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 Screenshot?
Skills that share tags, products or a category with Screenshot: 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 Screenshot?
mycelium-io (a GitHub organization) maintains it in mycelium-io/mycelium, which has 119 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on October 10, 2026.
Source: mycelium-io/mycelium on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.