SkillVerdict
All verdicts

vercel-react-best-practices

Install vercel-labs/agent-skills

70 prioritised React and Next.js performance rules from Vercel, markdown only. One rule suggests adding an npm package — check it first.

Verified · Repo on GitHub

What it does

A prioritised performance guide for React and Next.js that the agent consults while writing or reviewing code: 70 rules in 8 categories, from "eliminating waterfalls" and bundle size (critical) down to advanced patterns (low). Each rule has its own file in rules/, and a compiled AGENTS.md holds them all.

Who made it / license / last checked

Vercel (vercel-labs/agent-skills) · License: MIT per the SKILL.md frontmatter; we found no LICENSE file at the repo root in our clone · Skill version 1.0.0 · Repo last commit checked: 2026-10-27

Install

npx skills add vercel-labs/agent-skills

From the repo README, which installs the whole pack; the folder is skills/react-best-practices while the skill's name is vercel-react-best-practices. We did not run the installer.

What files / scripts it runs

SKILL.md (7,251 bytes), a 108 KB AGENTS.md, 72 markdown files in rules/ and a metadata.json. No scripts. The model invokes it on its own whenever it touches React or Next.js code.

Pros

  • Concrete, prioritised rules instead of generic "write fast code"
  • Markdown only: nothing executes
  • Maintained by the team that builds Next.js

Cons

  • The 108 KB AGENTS.md is a lot of context if the agent loads it whole
  • Rule async-dependencies recommends the better-all npm package: vet any new dependency before adding it
  • Some rules are Next.js-specific; on plain React or another framework, skip those
  • No LICENSE file at the repo root; only the frontmatter says MIT

Alternatives

The React and Next.js official docs on performance; Vercel's web-design-guidelines skill from the same repo for UI rather than speed (not reviewed here).

Notes

Skills.sh listed it at 853.0K installs (#30) on 30 Oct 2026. The find-skills skill uses npx skills add vercel-labs/agent-skills@react-best-practices as its own example.

Sources

Verified on 2026-11-04 through the GitHub API: it has had no commit since the 30 Oct check, so the files, sizes and verdict above still hold. Previous check on 2026-10-30, from a fresh clone of the repo (commit 1a2c79d, 2026-10-27) and the skills.sh leaderboard fetched that day. Repo last-commit is a repo date, not a per-skill release date. Install counts are distribution, not quality.