Add Effect
remotion-dev/remotion
Add a new effect to @remotion/effects, including implementation, package exports, docs, demos, preview images, Remotion skill updates, formatting, and builds.
Analyze and fix useEffect anti-patterns in your code. An agent skill from simstudioai/sim.
Apache-2.0Auto-check passed
Install You Might Not Need An Effect
$ npx skills add simstudioai/sim --skill you-might-not-need-an-effect -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install simstudioai/sim you-might-not-need-an-effect --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/simstudioai/sim.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/you-might-not-need-an-effect .claude/skills/you-might-not-need-an-effect && 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 "you-might-not-need-an-effect" agent skill from https://github.com/simstudioai/sim/tree/main/.agents/skills/you-might-not-need-an-effect into .claude/skills/you-might-not-need-an-effect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "you-might-not-need-an-effect", 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/simstudioai/sim/tree/main/.agents/skills/you-might-not-need-an-effectType 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 simstudioai/sim --skill you-might-not-need-an-effect -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install simstudioai/sim you-might-not-need-an-effect --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/simstudioai/sim.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/you-might-not-need-an-effect .agents/skills/you-might-not-need-an-effect && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "you-might-not-need-an-effect" agent skill from https://github.com/simstudioai/sim/tree/main/.agents/skills/you-might-not-need-an-effect into .agents/skills/you-might-not-need-an-effect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "you-might-not-need-an-effect", 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 simstudioai/sim --skill you-might-not-need-an-effect -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install simstudioai/sim you-might-not-need-an-effect --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/simstudioai/sim.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/you-might-not-need-an-effect .cursor/skills/you-might-not-need-an-effect && 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 "you-might-not-need-an-effect" agent skill from https://github.com/simstudioai/sim/tree/main/.agents/skills/you-might-not-need-an-effect into .cursor/skills/you-might-not-need-an-effect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "you-might-not-need-an-effect", 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/simstudioai/sim.git --path .agents/skills/you-might-not-need-an-effect--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 simstudioai/sim --skill you-might-not-need-an-effect -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install simstudioai/sim you-might-not-need-an-effect --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/simstudioai/sim.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/you-might-not-need-an-effect .gemini/skills/you-might-not-need-an-effect && 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 "you-might-not-need-an-effect" agent skill from https://github.com/simstudioai/sim/tree/main/.agents/skills/you-might-not-need-an-effect into .gemini/skills/you-might-not-need-an-effect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "you-might-not-need-an-effect", 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 simstudioai/sim you-might-not-need-an-effectInstalls 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 simstudioai/sim --skill you-might-not-need-an-effect -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/simstudioai/sim.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/you-might-not-need-an-effect .github/skills/you-might-not-need-an-effect && 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 "you-might-not-need-an-effect" agent skill from https://github.com/simstudioai/sim/tree/main/.agents/skills/you-might-not-need-an-effect into .github/skills/you-might-not-need-an-effect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "you-might-not-need-an-effect", 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 simstudioai/sim --skill you-might-not-need-an-effect -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install simstudioai/sim you-might-not-need-an-effect --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/simstudioai/sim.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/you-might-not-need-an-effect .opencode/skills/you-might-not-need-an-effect && 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 "you-might-not-need-an-effect" agent skill from https://github.com/simstudioai/sim/tree/main/.agents/skills/you-might-not-need-an-effect into .opencode/skills/you-might-not-need-an-effect/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "you-might-not-need-an-effect", 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
you-might-not-need-an-effect- GitHub stars
- 30k
- Token cost
- ~288 tokens
- SKILL.md length
- 146 words
- Files
- 1
- Skills in repo
- 40
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Analyze and fix useEffect anti-patterns in your code. An agent skill from simstudioai/sim.
- Works in 3 steps: Read… → Analyze the specified scope for… → If fix=true, apply the fixes. If…
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
You Might Not Need An Effect is an agent skill from simstudioai/sim. Analyze and fix useEffect anti-patterns in your code
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.
The repository describes itself as: Sim is the collaborative workspace to build, deploy, and monitor AI agents and workflows. Used by 100,000+ builders. The licence is Apache-2.0.
Example prompts
- “/you-might-not-need-an-effect”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Read https://react.dev/learn/you-might-not-need-an-effect to understand the guidelines
- Analyze the specified scope for useEffect anti-patterns
- If fix=true, apply the fixes. If fix=false, propose the fixes without applying.
What it can do on your machine
Read from SKILL.md and the folder at commit 546d4e7. 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
Links to these hosts (documentation or services it may open):
react.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
You Might Not Need An Effect loads about 288 tokens when it runs. Until then it costs about 20 tokens; SKILL.md has 146 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 simstudioai/sim at commit 546d4e7, republished under its Apache-2.0 licence (© simstudioai). 146 words, ~288 tokens.
Download SKILL.mdSave it as
.claude/skills/you-might-not-need-an-effect/SKILL.md (or your agent's skills folder).- name
- you-might-not-need-an-effect
- description
- Analyze and fix useEffect anti-patterns in your code
- argument-hint
- [scope] [fix=true|false]
You Might Not Need an Effect
Arguments:
- scope: what to analyze (default: your current changes). Examples: "diff to main", "PR #123", "src/components/", "whole codebase"
- fix: whether to apply fixes (default: true). Set to false to only propose changes.
User arguments: $ARGUMENTS
Steps:
- Read https://react.dev/learn/you-might-not-need-an-effect to understand the guidelines
- Analyze the specified scope for useEffect anti-patterns
- If fix=true, apply the fixes. If fix=false, propose the fixes without applying.
Query-backed forms
When query data supplies the initial values for an editable form, do not copy it into draft state in an Effect. Render loading chrome in an outer component, then mount a keyed form child once data exists and initialize its state lazily from props. Key by the resource identity so every related draft, dialog, and upload state resets together when the resource changes. Keep independent queries in the outer component to preserve parallel fetching.
© simstudioai, 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 .agents/skills/you-might-not-need-an-effect of simstudioai/sim.
Open the folder on GitHubat commit 546d4e7
Compare with similar skills
You Might Not Need An Effect 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 |
|---|---|---|---|---|---|---|
| You Might Not Need An Effect this skillsimstudioai/sim | 30k | — | ~288 | Automated safety check: Pass | Apache-2.0 | |
| Add Effectremotion-dev/remotion | 62k | — | ~2.8k | Automated safety check: Pass | Custom licence | |
| Effect V4ComposioHQ/composio | 30k | — | ~1k | Automated safety check: Pass | MIT | |
| Parallax Effectsthedaviddias/Front-End-Checklist | 74k | — | ~523 | Automated safety check: Pass | MIT | |
| Od Web Effect Extractornexu-io/open-design | 100k | — | ~1.6k | Automated safety check: Pass | Apache-2.0 | |
| React Useeffectudecode/plate | 17k | 6 repos | ~573 | Automated safety check: Pass | Custom licence |
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Questions about You Might Not Need An Effect
What does You Might Not Need An Effect do?
Analyze and fix useEffect anti-patterns in your code. An agent skill from simstudioai/sim. You Might Not Need An Effect is an agent skill from simstudioai/sim.
How do I install You Might Not Need An Effect in Claude Code?
Run `npx skills add simstudioai/sim --skill you-might-not-need-an-effect -a claude-code`. Or copy the skill folder (.agents/skills/you-might-not-need-an-effect in simstudioai/sim) into .claude/skills/you-might-not-need-an-effect in your project. Claude Code loads it when a task matches its description.
How do I install You Might Not Need An Effect in Codex?
Run `npx skills add simstudioai/sim --skill you-might-not-need-an-effect -a codex`. Or copy the skill folder (.agents/skills/you-might-not-need-an-effect in simstudioai/sim) into .agents/skills/you-might-not-need-an-effect in your project. Codex loads it when a task matches its description.
Can I use You Might Not Need An Effect 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 simstudioai/sim --skill you-might-not-need-an-effect -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/you-might-not-need-an-effect, .gemini/skills/you-might-not-need-an-effect, .github/skills/you-might-not-need-an-effect and .opencode/skills/you-might-not-need-an-effect in your project.
What does You Might Not Need An Effect need to run?
SKILL.md names no scripts, command-line tools or credentials: You Might Not Need An Effect is instructions for the agent only.
Does You Might Not Need An Effect access the network?
SKILL.md names 1 domain. As links in the text: react.dev. This is read from the text; nothing was executed.
Is You Might Not Need An Effect 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 You Might Not Need An Effect use?
You Might Not Need An Effect 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 You Might Not Need An Effect use?
About 288 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 You Might Not Need An Effect?
Skills that share tags, products or a category with You Might Not Need An Effect: Add Effect (remotion-dev/remotion, 62k stars), Effect V4 (ComposioHQ/composio, 30k stars), Parallax Effects (thedaviddias/Front-End-Checklist, 74k stars) and Od Web Effect Extractor (nexu-io/open-design, 100k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains You Might Not Need An Effect?
simstudioai (a GitHub organization) maintains it in simstudioai/sim, which has 29,785 GitHub stars. The repository holds 40 skills in this directory. The repository was last updated on October 7, 2026.
Source: simstudioai/sim on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.