React Native Best Practices
vercel-labs/openreview
A prioritized rule set for React Native and Expo apps covering list performance, animation, navigation, UI patterns, state, rendering, monorepos and configuration.
Diagnose a concrete rendered hitch or stutter. An agent skill from TheGoat395/Codex-Skills.
Install Animation Jank QA
$ npx skills add TheGoat395/Codex-Skills --skill animation-jank-qa -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install TheGoat395/Codex-Skills animation-jank-qa --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/TheGoat395/Codex-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/animation-jank-qa .claude/skills/animation-jank-qa && 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 "animation-jank-qa" agent skill from https://github.com/TheGoat395/Codex-Skills/tree/main/skills/animation-jank-qa into .claude/skills/animation-jank-qa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "animation-jank-qa", 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/TheGoat395/Codex-Skills/tree/main/skills/animation-jank-qaType 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 TheGoat395/Codex-Skills --skill animation-jank-qa -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install TheGoat395/Codex-Skills animation-jank-qa --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/TheGoat395/Codex-Skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/animation-jank-qa .agents/skills/animation-jank-qa && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "animation-jank-qa" agent skill from https://github.com/TheGoat395/Codex-Skills/tree/main/skills/animation-jank-qa into .agents/skills/animation-jank-qa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "animation-jank-qa", 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 TheGoat395/Codex-Skills --skill animation-jank-qa -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install TheGoat395/Codex-Skills animation-jank-qa --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/TheGoat395/Codex-Skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/animation-jank-qa .cursor/skills/animation-jank-qa && 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 "animation-jank-qa" agent skill from https://github.com/TheGoat395/Codex-Skills/tree/main/skills/animation-jank-qa into .cursor/skills/animation-jank-qa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "animation-jank-qa", 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/TheGoat395/Codex-Skills.git --path skills/animation-jank-qa--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 TheGoat395/Codex-Skills --skill animation-jank-qa -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install TheGoat395/Codex-Skills animation-jank-qa --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/TheGoat395/Codex-Skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/animation-jank-qa .gemini/skills/animation-jank-qa && 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 "animation-jank-qa" agent skill from https://github.com/TheGoat395/Codex-Skills/tree/main/skills/animation-jank-qa into .gemini/skills/animation-jank-qa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "animation-jank-qa", 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 TheGoat395/Codex-Skills animation-jank-qaInstalls 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 TheGoat395/Codex-Skills --skill animation-jank-qa -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/TheGoat395/Codex-Skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/animation-jank-qa .github/skills/animation-jank-qa && 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 "animation-jank-qa" agent skill from https://github.com/TheGoat395/Codex-Skills/tree/main/skills/animation-jank-qa into .github/skills/animation-jank-qa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "animation-jank-qa", 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 TheGoat395/Codex-Skills --skill animation-jank-qa -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install TheGoat395/Codex-Skills animation-jank-qa --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/TheGoat395/Codex-Skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/animation-jank-qa .opencode/skills/animation-jank-qa && 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 "animation-jank-qa" agent skill from https://github.com/TheGoat395/Codex-Skills/tree/main/skills/animation-jank-qa into .opencode/skills/animation-jank-qa/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "animation-jank-qa", 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
animation-jank-qa- GitHub stars
- 126
- Token cost
- ~487 tokens
- SKILL.md length
- 243 words
- Files
- 3 (incl. references)
- Skills in repo
- 23
- Repo updated
- First seen
- Licence
- MIT
At a glance
Diagnose a concrete rendered hitch or stutter. An agent skill from TheGoat395/Codex-Skills.
- Works in 5 steps: Reproduce the exact affected route,… → Read Animation Jank QA Guide for… → Run the narrowest meaningful trace or… → …
- Tasks that involve Mobile performance
- SKILL.md covers Workflow and Always Protect
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Animation Jank QA is an agent skill from TheGoat395/Codex-Skills. Diagnose a concrete rendered hitch or stutter.
Its SKILL.md is about 490 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `agents/openai.yaml` and `references/animation-jank-qa-guide.md`).
It sits in Mobile, covering Mobile performance. The repository describes itself as: Codex-first Agent Skills library for premium frontend, website, motion, accessibility, QA, and handoff workflows. The licence is MIT.
When your agent uses it
- Tasks that involve Mobile performance
Example prompts
- “/animation-jank-qa”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Reproduce the exact affected route, interaction, viewport, and device class.
- Read Animation Jank QA Guide for relevant diagnosis and retesting steps.
- Run the narrowest meaningful trace or rendered check for the symptom; inspect frame timing, long tasks, forced layout, paint/compositing…
- Fix issues when they are in scope; otherwise record exact evidence and remaining risk.
- Retest the original symptom and summarize commands, URLs, traces/screenshots, changed files, and what was not tested.
What it can do on your machine
Read from SKILL.md and the folder at commit feff772. 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
Animation Jank QA loads about 487 tokens when it runs, and up to ~1.3k if it reads all its reference files. Until then it costs about 16 tokens; SKILL.md has 243 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 TheGoat395/Codex-Skills at commit feff772, republished under its MIT licence (© TheGoat395). 243 words, ~487 tokens.
Download SKILL.mdSave it as
.claude/skills/animation-jank-qa/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.- name
- animation-jank-qa
- description
- Diagnose a concrete rendered hitch or stutter.
Animation Jank QA
Use this skill for symptom-led runtime diagnosis. Start from a reproducible jank case and determine whether it comes from main-thread work, layout/paint, asset pressure, scroll coupling, competing animation systems, or lifecycle cleanup.
Workflow
- Reproduce the exact affected route, interaction, viewport, and device class.
- Read Animation Jank QA Guide for relevant diagnosis and retesting steps.
- Run the narrowest meaningful trace or rendered check for the symptom; inspect frame timing, long tasks, forced layout, paint/compositing, asset decode, observers, timers, and RAF loops as applicable.
- Fix issues when they are in scope; otherwise record exact evidence and remaining risk.
- Retest the original symptom and summarize commands, URLs, traces/screenshots, changed files, and what was not tested.
Always Protect
- Inspect the framework, motion stack, affected media, component lifecycle, and available browser/performance tooling before changing code.
- Do not claim something was tested unless it was actually tested; report exact commands, URLs, screenshots, viewports, failures, skipped checks, and remaining risk.
- Reproduce and retest rendered output on the affected route and supported viewport/device classes; inspect console, trace, network and layout evidence relevant to that symptom.
- Respect accessibility, performance, reduced-motion, and no-JavaScript/no-WebGL/no-autoplay fallbacks where relevant.
- Keep secrets out of code, logs, screenshots, summaries, widgets, and committed files.
- Prefer project-local tooling and existing scripts before adding dependencies. Explain any new dependency before installing it.
- End with a concise handoff: changed files, commands run, checks passed, checks not run, deployment URL if any, and next risks.
© TheGoat395, 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 2 other files (references) in skills/animation-jank-qa of TheGoat395/Codex-Skills.
- SKILL.md
- agents/openai.yaml
- references/animation-jank-qa-guide.md
Open the folder on GitHubat commit feff772
Compare with similar skills
Animation Jank QA 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 |
|---|---|---|---|---|---|---|
| Animation Jank QA this skillTheGoat395/Codex-Skills | 126 | — | ~487 | Automated safety check: Pass | MIT | |
| React Native Best Practicesvercel-labs/openreview | 1.7k | 17 repos | ~1.1k | Automated safety check: Pass | MIT | |
| Dongle Crash Analysishaumacher/phoneblock | 367 | — | ~1.9k | Automated safety check: Notes | GPL-3.0 | |
| Perfetto Trace Analysisjameshnsears/QuoteUnquote | 100 | 2 repos | ~1.7k | Automated safety check: Pass | Apache-2.0 | |
| Speedupskilljjcm/makefaster | 164 | — | ~4.8k | Automated safety check: Pass | None | |
| React Native Best Practicescallstackincubator/agent-skills | 1.7k | 4 repos | ~3.1k | Automated safety check: Pass | MIT |
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Perfetto Trace Analysis
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Analyzes Perfetto traces to find the root cause of latency, memory, or jank issues in Android apps.
Speedupskill
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Kototoro Browse Source Scroll
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Related
Categories
Questions about Animation Jank QA
What does Animation Jank QA do?
Diagnose a concrete rendered hitch or stutter. An agent skill from TheGoat395/Codex-Skills. Animation Jank QA is an agent skill from TheGoat395/Codex-Skills. Diagnose a concrete rendered hitch or stutter.
When should I use Animation Jank QA?
Animation Jank QA fits situations like: tasks that involve Mobile performance.
How do I install Animation Jank QA in Claude Code?
Run `npx skills add TheGoat395/Codex-Skills --skill animation-jank-qa -a claude-code`. Or copy the skill folder (skills/animation-jank-qa in TheGoat395/Codex-Skills) into .claude/skills/animation-jank-qa in your project. Claude Code loads it when a task matches its description.
How do I install Animation Jank QA in Codex?
Run `npx skills add TheGoat395/Codex-Skills --skill animation-jank-qa -a codex`. Or copy the skill folder (skills/animation-jank-qa in TheGoat395/Codex-Skills) into .agents/skills/animation-jank-qa in your project. Codex loads it when a task matches its description.
Can I use Animation Jank QA 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 TheGoat395/Codex-Skills --skill animation-jank-qa -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/animation-jank-qa, .gemini/skills/animation-jank-qa, .github/skills/animation-jank-qa and .opencode/skills/animation-jank-qa in your project.
What does Animation Jank QA need to run?
SKILL.md names no scripts, command-line tools or credentials: Animation Jank QA is instructions for the agent only.
Does Animation Jank QA 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 Animation Jank QA 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 Animation Jank QA use?
Animation Jank QA 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 Animation Jank QA use?
About 487 tokens (SKILL.md is roughly 1.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 773 tokens, read only when the agent opens those files.
What are the alternatives to Animation Jank QA?
Skills that share tags, products or a category with Animation Jank QA: React Native Best Practices (vercel-labs/openreview, 1.7k stars), Dongle Crash Analysis (haumacher/phoneblock, 367 stars), Perfetto Trace Analysis (jameshnsears/QuoteUnquote, 100 stars) and Speedupskill (jjcm/makefaster, 164 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Animation Jank QA?
TheGoat395 (a GitHub user) maintains it in TheGoat395/Codex-Skills, which has 126 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on September 11, 2026.
Source: TheGoat395/Codex-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.