react-perf-rules SKILL.md skillA
react-perf-rules from smicolon/ai-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add smicolon/ai-kit/react-perf-rules@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
- smicolon/ai-kit
- Path
packs/react-review/skills/react-perf-rules/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed Sep 3, 2026
- Size
- 1,801 bytes
- Repository stars
- 7
- License
- MIT
Provides prioritized P0/P1/P2 criteria for auditing React and Next.js branch diffs across waterfalls, bundle bloat, server execution, and client re-renders.
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
# React & Next.js Performance Review Rules Prioritized review rules to audit branches for performance regressions. ## Severity Classification ### P0 (Critical — Must Fix Before Merge) - **Sequential Waterfalls**: Unnecessary chained `await` statements in server components or route handlers that could be parallelized with `Promise.all()`. - **Accidental De-opt of Server Components**: Adding `'use client'` to layout roots or high-level containers instead of leaf nodes. - **Unbounded Client-Side Lists**: Rendering dynamic lists with 100+ items without virtualization or pagination. - **Missing Memoization on Expensive Render Trees**: Passing new inline functions/objects as props to expensive or memoized child subtrees. ### P1 (High Impact — Strong Recommendation) - **Massive Barrel Imports**: Importing icons or utilities from index barrel files that bypass bundler tree-shaking. - **Synchronous Heavy Operations in Route Handlers**: Missing `after()` for non-critical side effects (audit logging, telemetry) in Next.js 15. - **Uncached Cacheable Fetches in Next.js 15**: Relying on legacy Next.js 14 caching assumptions without explicit `revalidate` or `cache: 'force-cache'`. …
Read the whole file at its exact version.
How to install
mdr add smicolon/ai-kit/react-perf-rules@sha256:a212a4e85bd49a3aThe 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_wbbceyy2dodikodz)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 3, 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 (1801 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
smicolon/ai-kit · 7 stars · license MIT · pushed 2026-09-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_wbbceyy2dodikodz GET https://markdownregistry.com/api/v1/resolve?ref=smicolon/ai-kit/react-perf-rules GET https://markdownregistry.com/api/v1/blob/a212a4e85bd49a3a325e8d7a44629583f21aebb1f71375e71dda1feb62a26c69
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.