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.
Core Web Vitals Reference — LCP, INP, CLS thresholds, root causes, optimization fixes, CrUX BigQuery queries, web-vitals library usage, and SEO impact
Install Cwv Audit
$ npx skills add cognyai/claude-code-marketing-skills --skill cwv-audit -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install cognyai/claude-code-marketing-skills cwv-audit --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/cognyai/claude-code-marketing-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/cwv-audit .claude/skills/cwv-audit && 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 "cwv-audit" agent skill from https://github.com/cognyai/claude-code-marketing-skills/tree/main/skills/cwv-audit into .claude/skills/cwv-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cwv-audit", 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/cognyai/claude-code-marketing-skills/tree/main/skills/cwv-auditType 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 cognyai/claude-code-marketing-skills --skill cwv-audit -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install cognyai/claude-code-marketing-skills cwv-audit --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cognyai/claude-code-marketing-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/cwv-audit .agents/skills/cwv-audit && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "cwv-audit" agent skill from https://github.com/cognyai/claude-code-marketing-skills/tree/main/skills/cwv-audit into .agents/skills/cwv-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cwv-audit", 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 cognyai/claude-code-marketing-skills --skill cwv-audit -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install cognyai/claude-code-marketing-skills cwv-audit --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cognyai/claude-code-marketing-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/cwv-audit .cursor/skills/cwv-audit && 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 "cwv-audit" agent skill from https://github.com/cognyai/claude-code-marketing-skills/tree/main/skills/cwv-audit into .cursor/skills/cwv-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cwv-audit", 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/cognyai/claude-code-marketing-skills.git --path skills/cwv-audit--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 cognyai/claude-code-marketing-skills --skill cwv-audit -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install cognyai/claude-code-marketing-skills cwv-audit --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cognyai/claude-code-marketing-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/cwv-audit .gemini/skills/cwv-audit && 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 "cwv-audit" agent skill from https://github.com/cognyai/claude-code-marketing-skills/tree/main/skills/cwv-audit into .gemini/skills/cwv-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cwv-audit", 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 cognyai/claude-code-marketing-skills cwv-auditInstalls 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 cognyai/claude-code-marketing-skills --skill cwv-audit -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/cognyai/claude-code-marketing-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/cwv-audit .github/skills/cwv-audit && 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 "cwv-audit" agent skill from https://github.com/cognyai/claude-code-marketing-skills/tree/main/skills/cwv-audit into .github/skills/cwv-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cwv-audit", 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 cognyai/claude-code-marketing-skills --skill cwv-audit -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install cognyai/claude-code-marketing-skills cwv-audit --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cognyai/claude-code-marketing-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/cwv-audit .opencode/skills/cwv-audit && 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 "cwv-audit" agent skill from https://github.com/cognyai/claude-code-marketing-skills/tree/main/skills/cwv-audit into .opencode/skills/cwv-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cwv-audit", 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
cwv-audit- GitHub stars
- 104
- Token cost
- ~5.1k tokens
- SKILL.md length
- 1,157 words
- Files
- 1
- Skills in repo
- 47
- Repo updated
- First seen
- Licence
- None found
At a glance
Core Web Vitals Reference — LCP, INP, CLS thresholds, root causes, optimization fixes, CrUX BigQuery queries, web-vitals library usage, and SEO impact
- Works in 3 steps: Input delay — time from user action to… → Processing time — time spent running… → Presentation delay — time from handler…
- Tasks that involve Web performance
- SKILL.md covers Usage, Instructions, Overview and LCP — Largest Contentful Paint, plus 4 more sections
- Calls npm; reaches competitor-a.com and competitor-b.com
What it does
Cwv Audit is an agent skill from cognyai/claude-code-marketing-skills. Core Web Vitals Reference — LCP, INP, CLS thresholds, root causes, optimization fixes, CrUX BigQuery queries, web-vitals library usage, and SEO impact
Its SKILL.md is about 5.1k 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, covering Web performance. It works with Google BigQuery. The repository describes itself as: Marketing skills for Claude Code — SEO audits and implementation, ad analysis, ad optimization. Free skills need no account. $9/mo for live Search Console, Bing & LinkedIn data.
When your agent uses it
- Tasks that involve Web performance
Example prompts
- “/cwv-audit”
Requirements
- Node.js
- Pre-approved tools (allowed-tools): WebFetch, WebSearch, Bash, Read, Write, mcp__cogny__search_console__tool_list_properties, mcp__cogny__search_console__tool_get_search_analytics, mcp__cogny__search_console__tool_inspect_url, mcp__cogny__google_analytics_4__tool_run_report, mcp__cogny__google_analytics_4__tool_get_property
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Input delay — time from user action to event handler start
- Processing time — time spent running event handlers
- Presentation delay — time from handler completion to next paint
What it can do on your machine
Read from SKILL.md and the folder at commit a062fb4. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
WebFetchWebSearchBashReadWritemcp__cogny__search_console__tool_list_propertiesmcp__cogny__search_console__tool_get_search_analyticsmcp__cogny__search_console__tool_inspect_urlmcp__cogny__google_analytics_4__tool_run_reportmcp__cogny__google_analytics_4__tool_get_property
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
npm
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
competitor-a.comcompetitor-b.com
Also links to:
cogny.comdeveloper.chrome.comweb.devgithub.compagespeed.web.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
Cwv Audit loads about 5.1k tokens when it runs. Until then it costs about 40 tokens; SKILL.md has 1,157 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: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: WebFetch, WebSearch, Bash, Read, Write, mcp__cogny__search_console__tool_list_properties, mcp__cogny
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 1,157 words (~5,091 tokens).
“Complete technical reference for Core Web Vitals (LCP, INP, CLS): thresholds, common causes, fixes, measurement tools, CrUX BigQuery queries, web-vitals library setup, and SEO ranking impact.”
- name
- cwv-audit
- allowed-tools
- WebFetch, WebSearch, Bash, Read, Write, mcp__cogny__search_console__tool_list_properties, mcp__cogny__search_console__tool_get_search_analytics, mcp__cogny__search_console__tool_inspect_url, mcp__cogny__google_analytics_4__tool_run_report, mcp__cogny__google_analytics_4__tool_get_property
- version
- 1.0.0
- author
- Cogny AI
- user-invocable
- true
- argument-hint
- <metric or topic>
Files
Just SKILL.md in skills/cwv-audit of cognyai/claude-code-marketing-skills.
Open the folder on GitHubat commit a062fb4
Compare with similar skills
Cwv Audit 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 |
|---|---|---|---|---|---|---|
| Cwv Audit this skillcognyai/claude-code-marketing-skills | 104 | — | ~5.1k | Automated safety check: Notes | None | |
| React Doctormakeplane/plane | 61k | 12 repos | ~657 | Automated safety check: Pass | AGPL-3.0 | |
| Fixing Motion Performanceibelick/ui-skills | 9.6k | 5 repos | ~1.4k | Automated safety check: Pass | MIT | |
| GSAP Performance Tuninggreensock/gsap-skills | 16k | 3 repos | ~1k | Automated safety check: Pass | MIT | |
| React Frontend Development Guidelinesdiet103/claude-code-infrastructure-showcase | 10k | 2 repos | ~2.9k | Automated safety check: Pass | MIT | |
| Web Quality Auditaddyosmani/web-quality-skills | 2.9k | — | ~2.6k | Automated safety check: Pass | MIT |
Similar skills
Fixing Motion Performance
ibelick/ui-skills
Audits and fixes web animation performance: layout thrashing, work that belongs on the compositor, scroll-linked motion and costly blur effects.
GSAP Performance Tuning
greensock/gsap-skills
Guides the agent to keep GSAP animations smooth by animating transforms and opacity, batching DOM reads and writes, and avoiding layout-heavy properties.
React Frontend Development Guidelines
diet103/claude-code-infrastructure-showcase
Guidelines for React 18 and TypeScript apps covering Suspense data fetching, lazy loading, feature folders, MUI v7 styling, TanStack Router and performance.
Web Quality Audit
addyosmani/web-quality-skills
Run an evidence-led web quality audit covering performance, accessibility, SEO, best practices, and agentic browsing.
SEO Google
AgriciDaniel/codex-seo
Google SEO APIs: Search Console (Search Analytics, URL Inspection, Sitemaps), PageSpeed Insights v5, CrUX field data with 25-week history, Indexing API v3, and GA4 organic traffic.
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Related
Works with
Categories
Questions about Cwv Audit
What does Cwv Audit do?
Core Web Vitals Reference — LCP, INP, CLS thresholds, root causes, optimization fixes, CrUX BigQuery queries, web-vitals library usage, and SEO impact. Cwv Audit is an agent skill from cognyai/claude-code-marketing-skills.
When should I use Cwv Audit?
Cwv Audit fits situations like: tasks that involve Web performance.
How do I install Cwv Audit in Claude Code?
Run `npx skills add cognyai/claude-code-marketing-skills --skill cwv-audit -a claude-code`. Or copy the skill folder (skills/cwv-audit in cognyai/claude-code-marketing-skills) into .claude/skills/cwv-audit in your project. Claude Code loads it when a task matches its description.
How do I install Cwv Audit in Codex?
Run `npx skills add cognyai/claude-code-marketing-skills --skill cwv-audit -a codex`. Or copy the skill folder (skills/cwv-audit in cognyai/claude-code-marketing-skills) into .agents/skills/cwv-audit in your project. Codex loads it when a task matches its description.
Can I use Cwv Audit 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 cognyai/claude-code-marketing-skills --skill cwv-audit -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/cwv-audit, .gemini/skills/cwv-audit, .github/skills/cwv-audit and .opencode/skills/cwv-audit in your project.
What does Cwv Audit need to run?
Going by SKILL.md and its folder, Cwv Audit needs the command-line tools its instructions call (npm). Our summary lists: Node.js. Its frontmatter pre-approves these tools: WebFetch, WebSearch, Bash, Read, Write, mcp__cogny__search_console__tool_list_properties, mcp__cogny__search_console__tool_get_search_analytics, mcp__cogny__search_console__tool_inspect_url, mcp__cogny__google_analytics_4__tool_run_report, mcp__cogny__google_analytics_4__tool_get_property.
Does Cwv Audit access the network?
SKILL.md names 7 domains. In commands or code: competitor-a.com and competitor-b.com; the agent is likely to contact these when it follows the instructions. As links in the text: cogny.com, developer.chrome.com, web.dev, github.com and pagespeed.web.dev. This is read from the text; nothing was executed.
Is Cwv Audit safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Cwv Audit use?
No licence was found for Cwv Audit or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Cwv Audit use?
About 5.1k tokens (SKILL.md is roughly 20k 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 Cwv Audit?
Skills that share tags, products or a category with Cwv Audit: React Doctor (makeplane/plane, 61k stars), Fixing Motion Performance (ibelick/ui-skills, 9.6k stars), GSAP Performance Tuning (greensock/gsap-skills, 16k stars) and React Frontend Development Guidelines (diet103/claude-code-infrastructure-showcase, 10k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Cwv Audit?
cognyai (a GitHub organization) maintains it in cognyai/claude-code-marketing-skills, which has 104 GitHub stars. The repository holds 47 skills in this directory. The repository was last updated on June 16, 2026.
Source: cognyai/claude-code-marketing-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.