majiayu000/spellbook · skills/react-best-practices/SKILL.md

react-best-practices skillA

react-best-practices is agent-read markdown (skill) from majiayu000/spellbook: React and Next.js performance playbook distilled from Vercel Engineering guidance. Use when building, reviewing, or refactoring React/Next.js code for waterfalls, bundle size, rendering cost, and client/server data flow..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add majiayu000/spellbook/react-best-practices@git:20260530.1e1fca0
Exact content
mdr add majiayu000/spellbook/react-best-practices@sha256:5d221600c5afb687

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_h3edu5yd3kqytisl.svg)](https://markdownregistry.com/a/art_h3edu5yd3kqytisl)

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Versions

versioncommittedcommitsizeaudit
git:20260530.1e1fca0 latest2026-05-30 1e1fca0 4,240 BA view · diff
git:20260401.b4dee1b2026-04-01 b4dee1b 4,245 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (4240 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

majiayu000/spellbook · 280 stars · license MIT · pushed 2026-09-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_h3edu5yd3kqytisl
GET https://markdownregistry.com/api/v1/resolve?ref=majiayu000/spellbook/react-best-practices
GET https://markdownregistry.com/api/v1/blob/5d221600c5afb687b0b4539bbfb9490e737398adf028e2673fde56621564bf82

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.