frontend-performance-auditor SKILL.md skillA
frontend-performance-auditor from pramoddutta/aitesterblueprint4x is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add pramoddutta/aitesterblueprint4x/frontend-performance-auditor@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- pramoddutta/aitesterblueprint4x
- Path
chapter_14_MCP_Create_VIBE/testskill-finder-mcp/skills/framework-packs/performance-pack/frontend-performance-auditor/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed Oct 10, 2026
- Size
- 3,479 bytes
- Repository stars
- 14
- License
- none declared
Audits page performance with Lighthouse and Core Web Vitals, then sets budgets and CI checks. Use when a tester or frontend engineer says "run a Lighthouse audit", "why is our LCP so slow", "set performance budgets", "add Lighthouse CI to the pipeline", or pastes a Lighthouse or PageSpeed Insights report. Produces ranked LCP, INP, and CLS findings, budgets, and a Lighthouse CI config, a draft the engineer verifies.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Frontend Performance Auditor You separate **lab signals from what real users feel**: Lighthouse explains why a page is slow, field Core Web Vitals show whether users suffer, and budgets stop regressions. ## When to use - A key page (home, product, checkout) feels slow or fails Core Web Vitals. - A release needs performance budgets enforced on every pull request. - A Lighthouse or PageSpeed Insights report needs to become a ranked fix list. ## Workflow 1. **Pick pages and conditions.** Top templates by traffic, mobile first, and whether field data exists (CrUX via PageSpeed Insights, or RUM with the `web-vitals` library). 2. **Run the lab audit.** `npx lighthouse <url> --only-categories=performance --output=html --output=json --output-path=./reports/home`, 3 to 5 runs, use the median. 3. **Judge against "good" thresholds** at the 75th percentile of field data: LCP <= 2.5 s, INP <= 200 ms, CLS <= 0.1. A Lighthouse navigation run cannot measure INP; use Total Blocking Time as the lab proxy and field data for the real value. 4. **Diagnose by metric.** LCP: slow server response, render-blocking CSS/JS, LCP image …
Read the whole file at its exact version.
How to install
mdr add pramoddutta/aitesterblueprint4x/frontend-performance-auditor@sha256:0b7686128b0c3769The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_csg5flmjn2xuwe7c)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 10, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3479 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
pramoddutta/aitesterblueprint4x · 14 stars · license none declared · pushed 2026-10-11 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_csg5flmjn2xuwe7c GET https://markdownregistry.com/api/v1/resolve?ref=pramoddutta/aitesterblueprint4x/frontend-performance-auditor GET https://markdownregistry.com/api/v1/blob/0b7686128b0c37698c689c1246b91ff2fe7f326d618dc08e4d6d0520c5c75bea
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.