performance SKILL.md skillC
performance from nirholas/auditkit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nirholas/auditkit/performance@git:20260221.8a4336fPins git:20260221.8a4336f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- C, 13 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nirholas/auditkit
- Path
.agents/skills/performance/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260221.8a4336f, committed Feb 21, 2026
- Size
- 2,233 bytes
- Repository stars
- 19
- License
- a license file GitHub does not identify
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
# Performance Skill — AuditKit
This skill is auto-included in the generated ZIP when the Performance pillar score is below 90.
## What it covers
Core Web Vitals (LCP, CLS, TBT/FID, FCP, TTFB, Speed Index) and general page weight / render-blocking resource issues.
## Thresholds (Google's "good" targets)
| Metric | Good | Needs Improvement | Poor |
|--------|------|-------------------|------|
| LCP (Largest Contentful Paint) | < 2.5s | 2.5–4s | > 4s |
| CLS (Cumulative Layout Shift) | < 0.1 | 0.1–0.25 | > 0.25 |
| TBT (Total Blocking Time) | < 200ms | 200–600ms | > 600ms |
| FCP (First Contentful Paint) | < 1.8s | 1.8–3s | > 3s |
| TTFB (Time to First Byte) | < 800ms | 800ms–1.8s | > 1.8s |
## Common Fixes
### Slow LCP
```html
<!-- Preload the hero image -->
<link rel="preload" as="image" href="/hero.webp" fetchpriority="high">
<!-- Use modern image formats -->
<img src="/hero.webp" alt="..." width="1200" height="600" loading="eager">
```
```typescript
// Next.js — use next/image with priority
import Image from 'next/image'
<Image src="/hero.webp" alt="..." width={1200} height={600} priority />
```
### High CLS
```css
/* Always set explicit width/height on images */
…Read the whole file at its exact version.
How to install
mdr add nirholas/auditkit/performance@sha256:dd7250e29d90efd5The line at the top of this page pins the label git:20260221.8a4336f, 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_ctv5whqxwcgry2yq)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Feb 21, 2026.
Audit of the latest version
- fail: Frontmatter block present
- fail: Frontmatter declares a name
- fail: Frontmatter declares a description
- fail: No script tag (matched: <script)
- pass: Size between 200 bytes and 200 KB (2233 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
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
nirholas/auditkit · 19 stars · license a license file GitHub does not identify · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ctv5whqxwcgry2yq GET https://markdownregistry.com/api/v1/resolve?ref=nirholas/auditkit/performance GET https://markdownregistry.com/api/v1/blob/dd7250e29d90efd509592d797ad6fc9939448e7386975ca9bcbed1140ff0a3da
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.
More from nirholas/auditkit
Every file in nirholas/auditkit