review-performance SKILL.md skillA
review-performance from dhaupin/vant is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add dhaupin/vant/review-performance@v1.0Pins v1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- dhaupin/vant
- Path
models/public/vant/skills/vant-skill-review-performance/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0, committed Jul 20, 2026
- Size
- 1,629 bytes
- Repository stars
- 12
- License
- MIT
Is it fast?
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 Review
> Is it fast?
---
## Rule #1
**Measure. Don't guess.**
```bash
# Profile before you optimize
node --prof app.js
```
---
## What To Check
### 1. Time
```javascript
// Time operations
const start = Date.now()
doThing()
console.log(Date.now() - start)
```
| Check | Target |
|---------|--------|
| API < 200ms | |
| Page < 1s | |
| Build < 30s | |
### 2. Network
```bash
# Check size
curl -s -o /dev/null -w "%{size_download}" URL
```
| Size | Rating |
|------|--------|
| > 1MB | SLOW |
| > 500KB | MEDIUM |
| < 100KB | FAST |
### 3. Queries
```javascript
// N+1 query?
items.map(i => db.get(i.id))
```
| Pattern | Issue | Fix |
|---------|-------|-----|
| query in loop | N+1 | Batch |
| select * | Too much | Select needed |
| no cache | Repeat | Cache |
### 4. Async
```javascript
// Blocking?
await heavy()
await more()
```
| Pattern | Issue | Fix |
|---------|-------|-----|
| Sequential | Slow | Promise.all |
| No timeout | Hang | Timeout |
| No limit | OOM | Limit |
---
## Output
```
## Performance - [endpoint]
### Timing
- [TIME] [endpoint]: [ms]ms
- Target: [target]ms
### Network
- [SIZE] [kb]kb
### Queries
- [COUNT] queries for [records]
…Read the whole file at its exact version.
How to install
mdr add dhaupin/vant/review-performance@sha256:f3d8584df684d0b7The line at the top of this page pins the label v1.0, 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_3g6br6tlfeteegum)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 20, 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 (1629 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
dhaupin/vant · 12 stars · license MIT · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3g6br6tlfeteegum GET https://markdownregistry.com/api/v1/resolve?ref=dhaupin/vant/review-performance GET https://markdownregistry.com/api/v1/blob/f3d8584df684d0b7a9bd3f5ea727d78efbd7b548b143180787b5ab526e2b4125
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.