Web Quality Audit
addyosmani/web-quality-skills
Run an evidence-led web quality audit covering performance, accessibility, SEO, best practices, and agentic browsing.
Frontend audit — bundle size, dependencies, accessibility, performance, component quality.
Install Prism Audit
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill prism-audit -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace prism-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/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/ai-agency/tonone/skills/prism-audit .claude/skills/prism-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 "prism-audit" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/plugins/ai-agency/tonone/skills/prism-audit into .claude/skills/prism-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prism-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/jeremylongshore/tons-of-skills-marketplace/tree/main/plugins/ai-agency/tonone/skills/prism-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 jeremylongshore/tons-of-skills-marketplace --skill prism-audit -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace prism-audit --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/ai-agency/tonone/skills/prism-audit .agents/skills/prism-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 "prism-audit" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/plugins/ai-agency/tonone/skills/prism-audit into .agents/skills/prism-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prism-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 jeremylongshore/tons-of-skills-marketplace --skill prism-audit -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace prism-audit --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/ai-agency/tonone/skills/prism-audit .cursor/skills/prism-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 "prism-audit" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/plugins/ai-agency/tonone/skills/prism-audit into .cursor/skills/prism-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prism-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/jeremylongshore/tons-of-skills-marketplace.git --path plugins/ai-agency/tonone/skills/prism-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 jeremylongshore/tons-of-skills-marketplace --skill prism-audit -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install jeremylongshore/tons-of-skills-marketplace prism-audit --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/ai-agency/tonone/skills/prism-audit .gemini/skills/prism-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 "prism-audit" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/plugins/ai-agency/tonone/skills/prism-audit into .gemini/skills/prism-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prism-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 jeremylongshore/tons-of-skills-marketplace prism-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 jeremylongshore/tons-of-skills-marketplace --skill prism-audit -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/ai-agency/tonone/skills/prism-audit .github/skills/prism-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 "prism-audit" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/plugins/ai-agency/tonone/skills/prism-audit into .github/skills/prism-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prism-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 jeremylongshore/tons-of-skills-marketplace --skill prism-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 jeremylongshore/tons-of-skills-marketplace prism-audit --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/ai-agency/tonone/skills/prism-audit .opencode/skills/prism-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 "prism-audit" agent skill from https://github.com/jeremylongshore/tons-of-skills-marketplace/tree/main/plugins/ai-agency/tonone/skills/prism-audit into .opencode/skills/prism-audit/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "prism-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
prism-audit- GitHub stars
- 2.8k
- Token cost
- ~1.4k tokens
- SKILL.md length
- 587 words
- Files
- 2
- Skills in repo
- 3,342
- Repo updated
- First seen
- Licence
- MIT
At a glance
Frontend audit — bundle size, dependencies, accessibility, performance, component quality.
- Works in 7 steps: Detect Environment → Audit Bundle Size → Audit Dependencies → …
- Asked for frontend review
- SKILL.md covers Steps and Delivery
- Calls npm
What it does
Prism Audit is an agent skill from jeremylongshore/tons-of-skills-marketplace. Frontend audit — bundle size, dependencies, accessibility, performance, component quality. Use when asked for "frontend review", "performance audit", "accessibility check", or "bundle size".
Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `.claude-plugin/plugin.json`).
It sits in Frontend & Design, covering Web performance and Accessibility. It works with npm. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.
When your agent uses it
- Asked for frontend review
- Performance audit
- Accessibility check
Example prompts
- “frontend review”
- “performance audit”
- “accessibility check”
- “/prism-audit”
Requirements
- Pre-approved tools (allowed-tools): Read, Bash, Glob, Grep, WebFetch, WebSearch, AskUserQuestion
Workflow steps
7 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit cfae287. 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:
ReadBashGlobGrepWebFetchWebSearchAskUserQuestion
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
No URLs in SKILL.md. Its commands use npm, 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
Prism Audit loads about 1.4k tokens when it runs. Until then it costs about 51 tokens; SKILL.md has 587 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: Read, Bash, Glob, Grep, WebFetch, WebSearch, AskUserQuestion
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 jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 587 words, ~1,433 tokens.
Download SKILL.mdSave it as
.claude/skills/prism-audit/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- prism-audit
- description
- Frontend audit — bundle size, dependencies, accessibility, performance, component quality. Use when asked for "frontend review", "performance audit", "accessibility check", or "bundle size".
- allowed-tools
- Read, Bash, Glob, Grep, WebFetch, WebSearch, AskUserQuestion
- version
- 0.6.4
- author
- tonone-ai <hello@tonone.ai>
- license
- MIT
Frontend Audit
You are Prism — the frontend and developer experience engineer from the Engineering Team.
Follow the output format defined in docs/output-kit.md — 40-line CLI max, box-drawing skeleton, unified severity indicators, compressed prose.
Steps
Step 0: Detect Environment
Discover the project's frontend stack:
- Check for framework:
next.config.*,nuxt.config.*,svelte.config.*,vite.config.*,webpack.config.* - Check
package.jsonfor: all dependencies and devDependencies, scripts (build, test, lint) - Check for TypeScript:
tsconfig.json— check strictness settings - Check for testing: test config files, test directories, coverage reports
- Check build output:
dist/,.next/,build/— look for bundle analysis artifacts - Check for CI: existing lint, test, and build steps
Step 1: Audit Bundle Size
Analyze what's being shipped to users:
- Check build output size: total JS, CSS, and assets
- Look for bundle analysis config or output (
@next/bundle-analyzer,rollup-plugin-visualizer,webpack-bundle-analyzer) - Identify heavy dependencies: search
node_modulessizes or check bundlephobia-equivalent data inpackage.json - Check for code splitting: dynamic imports, lazy loading, route-based splitting
- Check for tree shaking effectiveness: are barrel imports pulling in entire libraries
- Flag dependencies over 50KB gzipped that might have lighter alternatives
Report: total bundle size, largest chunks, heavy dependencies with alternatives.
Step 2: Audit Dependencies
Assess dependency health:
- Count: total dependencies vs. devDependencies — flag if unreasonably high
- Duplicates: check for multiple versions of the same library (e.g., two React versions, multiple date libraries)
- Freshness: check for severely outdated dependencies (major versions behind)
- Unused: search codebase for imports — flag dependencies in
package.jsonthat are never imported - Security: check for known vulnerabilities if
npm auditor equivalent data is available - Size vs. value: flag large dependencies used for trivial functionality (e.g., lodash for one function)
Step 3: Audit Accessibility
Check accessibility baseline:
- Semantic HTML: search for div/span soup where semantic elements should be used (
nav,main,article,button,label) - ARIA: check for missing ARIA labels on interactive elements, icons, and images
- Keyboard navigation: check for
onClickwithoutonKeyDown, missingtabIndex, focus trapping in modals - Forms: check for labels associated with inputs, error announcements, fieldset/legend usage
- Color contrast: check for hard-coded colors that may fail WCAG AA (contrast ratio < 4.5:1)
- Focus indicators: check if focus styles are removed (
outline: none) without replacements - Skip links: check for skip navigation link on content-heavy pages
Show full SKILL.md (227 more words)Show less
Step 4: Audit Performance Patterns
Check for common performance issues:
- Unnecessary re-renders: components that re-render on every parent render without memoization where needed
- Missing code splitting: large pages loaded as single chunks, no dynamic imports for heavy components
- Unoptimized images: no
next/imageor equivalent, missingwidth/height, no lazy loading for below-fold images - Client-side fetching: data fetched on client that could be server-rendered
- Waterfalls: sequential data fetching where parallel fetching is possible
- Missing Suspense boundaries: no streaming or progressive loading
- Large lists: rendering hundreds of items without virtualization
Step 5: Audit Component Quality
Check code quality patterns:
- Prop drilling: data passed through many component layers — should use context or state management
- Giant components: files over 300 lines that should be split
- Type safety: usage of
any, missing types on API responses, untyped props - Error handling: components that crash on bad data instead of showing error states
- Loading states: missing loading indicators on async operations
- Consistency: naming conventions, file structure, import patterns
Step 6: Report
Present findings with specific fixes and impact:
## Frontend Audit Report
### Score: [X/10]
### Bundle Size
- Total: [size] (gzipped)
- Largest chunks: [list]
- Heavy dependencies: [list with alternatives]
- Code splitting: [assessment]
### Dependencies
- Total: [count] deps, [count] devDeps
- Issues: [duplicates, unused, outdated, oversized]
### Accessibility
- Semantic HTML: [pass/issues found]
- Keyboard navigation: [pass/issues found]
- ARIA: [pass/issues found]
- Forms: [pass/issues found]
### Performance
- [issue] → [fix] — estimated impact: [high/medium/low]
### Component Quality
- [issue] → [fix]
### Priority Fixes
1. [highest impact fix] — [estimated effort]
2. [next fix] — [estimated effort]
3. [next fix] — [estimated effort]Focus on actionable findings. Don't list every minor style inconsistency — prioritize what impacts users, developers, and maintainability.
Delivery
If output exceeds the 40-line CLI budget, invoke /atlas-report with the full findings. The HTML report is the output. CLI is the receipt — box header, one-line verdict, top 3 findings, and the report path. Never dump analysis to CLI.
© jeremylongshore, 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 1 other file in plugins/ai-agency/tonone/skills/prism-audit of jeremylongshore/tons-of-skills-marketplace.
- SKILL.md
- .claude-plugin/plugin.json
Open the folder on GitHubat commit cfae287
Compare with similar skills
Prism 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 |
|---|---|---|---|---|---|---|
| Prism Audit this skilljeremylongshore/tons-of-skills-marketplace | 2.8k | — | ~1.4k | Automated safety check: Notes | MIT | |
| Web Quality Auditaddyosmani/web-quality-skills | 2.9k | — | ~2.6k | Automated safety check: Pass | MIT | |
| Web Quality Auditmidudev/100cosas.dev | 114 | 3 repos | ~1.7k | Automated safety check: Pass | MIT | |
| Optimize Loadtextura-agency/next16-claude-starter | 135 | — | ~4.6k | Automated safety check: Notes | Unlicense | |
| Kb Web ScanningCommunity-Access/accessibility-agents | 423 | — | ~1.2k | Automated safety check: Pass | MIT | |
| Building ComponentsCompound-inc/rift | 124 | 1 repos | ~538 | Automated safety check: Pass | Custom licence |
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Reference data, not a reviewer. An agent skill from Community-Access/accessibility-agents.
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Works with
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Questions about Prism Audit
What does Prism Audit do?
Frontend audit — bundle size, dependencies, accessibility, performance, component quality. Prism Audit is an agent skill from jeremylongshore/tons-of-skills-marketplace. Frontend audit — bundle size, dependencies, accessibility, performance, component quality.
When should I use Prism Audit?
Prism Audit fits situations like: asked for frontend review; performance audit; accessibility check.
How do I install Prism Audit in Claude Code?
Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill prism-audit -a claude-code`. Or copy the skill folder (plugins/ai-agency/tonone/skills/prism-audit in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/prism-audit in your project. Claude Code loads it when a task matches its description.
How do I install Prism Audit in Codex?
Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill prism-audit -a codex`. Or copy the skill folder (plugins/ai-agency/tonone/skills/prism-audit in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/prism-audit in your project. Codex loads it when a task matches its description.
Can I use Prism 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 jeremylongshore/tons-of-skills-marketplace --skill prism-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/prism-audit, .gemini/skills/prism-audit, .github/skills/prism-audit and .opencode/skills/prism-audit in your project.
What does Prism Audit need to run?
Going by SKILL.md and its folder, Prism Audit needs the command-line tools its instructions call (npm). Its frontmatter pre-approves these tools: Read, Bash, Glob, Grep, WebFetch, WebSearch, AskUserQuestion.
Does Prism Audit access the network?
SKILL.md contains no URLs. Its commands use npm, which can reach the network depending on how they are called. This is read from the text; nothing was executed.
Is Prism 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 Prism Audit use?
Prism Audit is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Prism Audit use?
About 1.4k tokens (SKILL.md is roughly 5.7k 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 Prism Audit?
Skills that share tags, products or a category with Prism Audit: Web Quality Audit (addyosmani/web-quality-skills, 2.9k stars), Web Quality Audit (midudev/100cosas.dev, 114 stars), Optimize Load (textura-agency/next16-claude-starter, 135 stars) and Kb Web Scanning (Community-Access/accessibility-agents, 423 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Prism Audit?
jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,827 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 10, 2026.
Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.