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.
Avoid useEffect. An agent skill from flornkm/personal-site.
No licenceAuto-check passed
Install React Useeffect
$ npx skills add flornkm/personal-site --skill react-useeffect -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install flornkm/personal-site react-useeffect --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/flornkm/personal-site.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/react-useeffect .claude/skills/react-useeffect && 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 "react-useeffect" agent skill from https://github.com/flornkm/personal-site/tree/main/.agents/skills/react-useeffect into .claude/skills/react-useeffect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-useeffect", 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/flornkm/personal-site/tree/main/.agents/skills/react-useeffectType 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 flornkm/personal-site --skill react-useeffect -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install flornkm/personal-site react-useeffect --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/flornkm/personal-site.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/react-useeffect .agents/skills/react-useeffect && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "react-useeffect" agent skill from https://github.com/flornkm/personal-site/tree/main/.agents/skills/react-useeffect into .agents/skills/react-useeffect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-useeffect", 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 flornkm/personal-site --skill react-useeffect -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install flornkm/personal-site react-useeffect --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/flornkm/personal-site.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/react-useeffect .cursor/skills/react-useeffect && 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 "react-useeffect" agent skill from https://github.com/flornkm/personal-site/tree/main/.agents/skills/react-useeffect into .cursor/skills/react-useeffect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-useeffect", 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/flornkm/personal-site.git --path .agents/skills/react-useeffect--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 flornkm/personal-site --skill react-useeffect -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install flornkm/personal-site react-useeffect --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/flornkm/personal-site.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/react-useeffect .gemini/skills/react-useeffect && 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 "react-useeffect" agent skill from https://github.com/flornkm/personal-site/tree/main/.agents/skills/react-useeffect into .gemini/skills/react-useeffect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-useeffect", 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 flornkm/personal-site react-useeffectInstalls 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 flornkm/personal-site --skill react-useeffect -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/flornkm/personal-site.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/react-useeffect .github/skills/react-useeffect && 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 "react-useeffect" agent skill from https://github.com/flornkm/personal-site/tree/main/.agents/skills/react-useeffect into .github/skills/react-useeffect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-useeffect", 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 flornkm/personal-site --skill react-useeffect -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install flornkm/personal-site react-useeffect --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/flornkm/personal-site.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/react-useeffect .opencode/skills/react-useeffect && 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 "react-useeffect" agent skill from https://github.com/flornkm/personal-site/tree/main/.agents/skills/react-useeffect into .opencode/skills/react-useeffect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-useeffect", 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
react-useeffect- GitHub stars
- 150
- Token cost
- ~1.2k tokens
- SKILL.md length
- 524 words
- Files
- 1
- Skills in repo
- 14
- Repo updated
- First seen
- Licence
- None found
At a glance
Avoid useEffect. An agent skill from flornkm/personal-site.
- Works in 5 steps: useEffect(() => setFullName(first + ' '… → useEffect(() => setComment(''),… → useEffect(() => { if (added) showToast()… → …
- Reviewing any useEffect
- SKILL.md covers Decision flow, Quick reference, Anti-patterns to refuse and When an Effect is actually right, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
React Useeffect is an agent skill from flornkm/personal-site. Avoid useEffect. Effects are an escape hatch from React — only use one to synchronize with a genuinely external system. Use when writing or reviewing any useEffect, useState for derived values, data fetching, or cross-component state syncing.
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It works with React. The repository describes itself as: Florians personal site.
When your agent uses it
- Reviewing any useEffect
- UseState for derived values
- Cross-component state syncing
Example prompts
- “/react-useeffect”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- useEffect(() => setFullName(first + ' ' + last), [first, last]) — just compute const fullName = first + ' ' + last.
- useEffect(() => setComment(''), [userId]) — pass key={userId} instead.
- useEffect(() => { if (added) showToast() }, [added]) — call showToast() directly in the click handler.
- useEffect(() => { fetch(query).then(setResults) }, [query]) with no cleanup — race condition. Use an ignore flag or AbortController, or…
- Effect chains where one Effect's setState triggers another Effect — collapse into one event handler.
What it can do on your machine
Read from SKILL.md and the folder at commit acc40c8. 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 typescript).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
github.comreact.dev
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
React Useeffect loads about 1.2k tokens when it runs. Until then it costs about 65 tokens; SKILL.md has 524 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
Without a licence we can't republish the file, so here is its outline and opening line. It has 524 words (~1,176 tokens).
“useEffect is an escape hatch from React. If there is no external system involved (browser API, third-party widget, network, non-React store), you almost certainly do not need one. Default to "no Effect" and only add one if you can name…”
- name
- react-useeffect
Files
Just SKILL.md in .agents/skills/react-useeffect of flornkm/personal-site.
Open the folder on GitHubat commit acc40c8
Compare with similar skills
React Useeffect 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 |
|---|---|---|---|---|---|---|
| React Useeffect this skillflornkm/personal-site | 150 | — | ~1.2k | Automated safety check: Pass | None | |
| Web Artifacts Builderanthropics/skills | 180k | 41 repos | ~769 | Automated safety check: Pass | Apache-2.0 | |
| Vercel Composition Patternssupabase/supabase | 111k | 59 repos | ~726 | Automated safety check: Pass | MIT | |
| React Doctormakeplane/plane | 61k | 12 repos | ~657 | Automated safety check: Pass | AGPL-3.0 | |
| React Router Developmentremix-run/react-router | 57k | 1 repos | ~1.5k | Automated safety check: Pass | MIT | |
| React UI State PatternsChrisWiles/claude-code-showcase | 6.1k | 8 repos | ~1.6k | Automated safety check: Pass | None |
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- Official
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Scans React code for lint, accessibility, bundle size and architecture issues, reports a health score and checks that changes do not lower it.
React Router Development
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Guides work on React Router apps by first identifying whether the app uses Framework, Data or Declarative mode, then loading the matching reference and the installed package docs.
React UI State Patterns
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Sets patterns for React interfaces: when to show loading spinners or skeletons, how to surface errors, how to disable buttons during async work and how to handle empty lists.
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Stitch to Remotion Walkthrough Videos
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Builds walkthrough videos from Stitch design projects using Remotion, with transitions, zoom effects and text overlays on each screen.
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Related
Works with
Questions about React Useeffect
What does React Useeffect do?
Avoid useEffect. An agent skill from flornkm/personal-site. React Useeffect is an agent skill from flornkm/personal-site. Avoid useEffect.
When should I use React Useeffect?
React Useeffect fits situations like: reviewing any useEffect; useState for derived values; cross-component state syncing.
How do I install React Useeffect in Claude Code?
Run `npx skills add flornkm/personal-site --skill react-useeffect -a claude-code`. Or copy the skill folder (.agents/skills/react-useeffect in flornkm/personal-site) into .claude/skills/react-useeffect in your project. Claude Code loads it when a task matches its description.
How do I install React Useeffect in Codex?
Run `npx skills add flornkm/personal-site --skill react-useeffect -a codex`. Or copy the skill folder (.agents/skills/react-useeffect in flornkm/personal-site) into .agents/skills/react-useeffect in your project. Codex loads it when a task matches its description.
Can I use React Useeffect 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 flornkm/personal-site --skill react-useeffect -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/react-useeffect, .gemini/skills/react-useeffect, .github/skills/react-useeffect and .opencode/skills/react-useeffect in your project.
What does React Useeffect need to run?
SKILL.md names no scripts, command-line tools or credentials: React Useeffect is instructions for the agent only.
Does React Useeffect access the network?
SKILL.md names 2 domains. As links in the text: github.com and react.dev. This is read from the text; nothing was executed.
Is React Useeffect 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 React Useeffect use?
No licence was found for React Useeffect or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does React Useeffect use?
About 1.2k tokens (SKILL.md is roughly 4.7k 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 React Useeffect?
Skills that share tags, products or a category with React Useeffect: Web Artifacts Builder (anthropics/skills, 180k stars), Vercel Composition Patterns (supabase/supabase, 111k stars), React Doctor (makeplane/plane, 61k stars) and React Router Development (remix-run/react-router, 57k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains React Useeffect?
flornkm (a GitHub user) maintains it in flornkm/personal-site, which has 150 GitHub stars. The repository holds 14 skills in this directory. The repository was last updated on October 7, 2026.
Source: flornkm/personal-site on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.