perf-audit SKILL.md skillA
perf-audit from arcasilesgroup/ai-engineering is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add arcasilesgroup/ai-engineering/perf-audit@git:20261106.9932b24Pins git:20261106.9932b24 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- arcasilesgroup/ai-engineering
- Path
skills/perf-audit/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261106.9932b24, committed Nov 6, 2026
- Size
- 8,210 bytes
- Repository stars
- 65
- License
- Apache-2.0
Audit performance — payload and bundle size, data-access patterns and waterfalls, caching, assets, and compute cost — reporting only issues with a measurable, user-visible cost. Use when asked about performance, slow loads, slow queries, slow renders, bundle size, memory use, Core Web Vitals, or optimizing the app.
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 audit Find work the system does that it does not need to do, where the cost is **user-visible**. Micro-optimizations that save a microsecond are not findings; 120KB of JavaScript shipped to render static text is, and so is an N+1 query that turns one page load into 200 round trips. Read `.claude/review/CONVENTIONS.md` first — stack detection, scope, false-positive gate, report format. The **installed-version rule** matters especially here: caching semantics, lazy-loading defaults, and compiler behavior change between versions, and a stale mental model produces confident, wrong findings. Confirm the installed version's default is not already doing what you are about to recommend. ## 1. Find the biggest cost centre first Do not run a fixed checklist top to bottom. Establish what kind of system this is and go where the cost actually lives: | System | Usually dominated by | |---|---| | Client-heavy web app | shipped bytes, hydration, render cost | | Server-rendered app | data fetching, cache correctness, time to first byte | | API / service | database access patterns, serialization, connection handling | …
Read the whole file at its exact version.
How to install
mdr add arcasilesgroup/ai-engineering/perf-audit@sha256:766d40fad3808930The line at the top of this page pins the label git:20261106.9932b24, 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_6l6ds653eryfdslg)
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Versions
The registry has recorded 1 version of this file, committed on Nov 6, 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 (8210 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
arcasilesgroup/ai-engineering · 65 stars · license Apache-2.0 · pushed 2026-11-09 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_6l6ds653eryfdslg GET https://markdownregistry.com/api/v1/resolve?ref=arcasilesgroup/ai-engineering/perf-audit GET https://markdownregistry.com/api/v1/blob/766d40fad3808930f1ac7edcb3b8b2d443a069d9482482f371742a77ec9c0afe
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 arcasilesgroup/ai-engineering
Every file in arcasilesgroup/ai-engineering