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perf-audit SKILL.md skillA

perf-audit from anilburcu/claude-code-react-native is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add anilburcu/claude-code-react-native/perf-audit@git:20260911.98ac3cb

Pins git:20260911.98ac3cb in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: anilburcu/claude-code-react-native
Path: plugins/rn/skills/perf-audit/SKILL.md
Versions recorded: 2
Latest version: git:20260911.98ac3cb, committed Sep 11, 2026
First version recorded: Jul 28, 2026
Size: 2,148 bytes
Repository stars: 3
License: MIT

Scan the codebase for React Native performance antipatterns and report ranked findings. Use for a performance review, a slow app, or a perf audit before release.

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

Audit the codebase (or the path in `$ARGUMENTS`) for the React Native performance antipatterns that actually matter. Read-only: report, do not edit.

Hunt for these, in priority order:

1. **Lists**: ScrollView wrapping `.map()` over data of meaningful size; FlatList/FlashList with inline arrow `renderItem`; missing or index-based `keyExtractor`; list images without fixed dimensions.
2. **Subscriptions**: components subscribing to whole stores (`useStore()` with no selector, or selectors returning fresh objects); context providers bundling fast-changing values with static ones.
3. **Render work**: heavy computation directly in render without memoization; date/number formatting per row per render; JSON.parse of large payloads on the interaction path.
4. **Animations**: setState driving per-frame animation; runOnJS inside gesture or frame callbacks; PanResponder where gesture-handler belongs; animating layout properties instead of transform/opacity.
5. **Startup**: heavy SDK/analytics initialization at module top level; barrel imports that pull the world into the entry file; synchronous storage reads before first render.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add anilburcu/claude-code-react-native/perf-audit@sha256:65beec2ed6b83b55

The line at the top of this page pins the label git:20260911.98ac3cb, 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.

Badge

[![mdr](https://markdownregistry.com/badge/art_nuolrsdbk2hgmzr2.svg)](https://markdownregistry.com/a/art_nuolrsdbk2hgmzr2)

7 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between Jul 28, 2026 and Sep 11, 2026, about one every 45 days.

version	committed	commit	size	audit
git:20260911.98ac3cb latest	2026-09-11	98ac3cb	2,148 B	A	view · diff
git:20260728.436a435	2026-07-28	436a435	2,182 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (2148 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

GitHub

anilburcu/claude-code-react-native · 3 stars · license MIT · pushed 2026-09-11 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_nuolrsdbk2hgmzr2
GET https://markdownregistry.com/api/v1/resolve?ref=anilburcu/claude-code-react-native/perf-audit
GET https://markdownregistry.com/api/v1/blob/65beec2ed6b83b5560e188e2a9e985b38cfd3e07ac119c9e3565b2c0f79634f2

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.

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