vercel-react-best-practices
Skill3.6k starsChanged 7 months agoLicence not identifiedView on GitHub
React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.
We split this skill into the rules it gives an agent
1 rule. 1 is common, 0 are distinctive, and 0 are very specific to this project.
1
Common
Most of the 173 edited versions we read keep these.
0
Distinctive
This author's own choices. Worth a look.
0
Very specific
Tied to their project's names, files or tools. Probably skip.
The licence could not be identified — read it at the source. We count its rules but don't quote them. Read them on GitHub.
“Common” is measured: kept by at least 6 in 10 of the 173 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.
Trending
Rising: 20 new projects took it in the last 4 weeks, 1.3× the 4 weeks before.
Who's talking about millionco/expect
- @sungkim.bsky.social“If this works, awesome! Expect Let agents test your code in a real browser 1. Run Claude Code / Codex to QA …”Bluesky · Mar 26, 2026 · 35 likes
- sudosubin/agents.nix“agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08”GitHub · Oct 30, 2026
- sudosubin/agents.nix“agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09”GitHub · Oct 29, 2026
- sudosubin/agents.nix“agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08”GitHub · Oct 29, 2026
- sudosubin/agents.nix“agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09”GitHub · Oct 29, 2026
The biggest 5 of 51 mentions linking to the repository that our crawl found. Each line is their own headline.
See all 51
Talked about on GitHub and Bluesky (51 times).
On GitHub · 50
- Oct 30, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 29, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 29, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 29, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 28, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
45 more on GitHub
- Oct 28, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 28, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 27, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 27, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 27, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 27, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 26, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 26, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 26, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 25, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 25, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 25, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 25, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 25, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 24, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 24, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 24, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 24, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 24, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 23, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 23, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 23, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 23, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 22, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 22, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 22, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 22, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 21, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 21, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 21, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 21, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 21, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 20, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 20, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 20, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 20, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 19, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 19, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 19, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 18, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 18, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 18, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 18, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
- Oct 18, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-09 → 0-unstable-2026-04-08 — sudosubin/agents.nix0 reactions
- Oct 17, 2026agent-skills.github.millionco.expect: 0-unstable-2026-04-08 → 0-unstable-2026-04-09 — sudosubin/agents.nix0 reactions
On Bluesky · 1
- Mar 26, 2026If this works, awesome! Expect Let agents test your code in a real browser 1. Run Claude Code / Codex to QA your app 2. Watch a video of… — @sungkim.bsky.social35 likes and reposts · 4 replies
Other versions178 projects use a version of this.
Word for word · 0
None found.
Edited · 174
- Significant-Gravitas/AutoGPT★ 188k93% same
- calesthio/OpenMontage★ 74k82% same
- CherryHQ/cherry-studio★ 53k92% same
- vercel-labs/agent-skills★ 33k80% same
- udecode/plate★ 17k80% same
- open-metadata/OpenMetadata★ 16k80% same
- Arize-ai/phoenix★ 12k80% same
- trycompai/crm★ 11k80% same
- polarsource/polar★ 10k93% same
- mengxi-ream/read-frog★ 10k80% same
164 more not listed
Wrote their own version · 4
- QuantumNous/new-api★ 51ksame name
- coco-research/coco★ 797same name
- extra-org/extra★ 118same name
- composio-community/opencode-skills★ 14same name
How matches are found. Word for word: the exact same text. Edited: shares passages with this file (“99% same” means 99% of its five-word phrases also appear here; 10% or more counts). Their own version: similar meaning, or, weakest, the same name. We can’t tell which project had it first. Projects are counted among the 200 most-starred candidates, and mentions are links to the repository we found, up to 50 per site, so both counts are a floor.
Used alongsideProjects with it also use dep-refs, feature-boundary-planner and 10 more.
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- +3 more from vercel-labs
In this repository14 other files it gives its agents.
- AGENTS.mdAGENTS.md
- .agents/skills/vercel-react-best-practices/AGENTS.mdAGENTS.md
- CLAUDE.mdCLAUDE.md
- .cursor/rules/browser-testing.mdcCursor rule
- .cursor/rules/effect-ts.mdcCursor rule
- .cursor/rules/expect-testing.mdcCursor rule
- .cursor/rules/web-quality-audit.mdcCursor rule
- code-reviewSkill
- debug-agentSkill
- deslopSkill
- effect-best-practicesSkill
- effect-portable-patternsSkill
- expectSkill
- skill-writingSkill
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Your trail
Files you open will collect here, so you can find them again.
Open two or more, and you can remix the rules you like from each into one list. Kept in this browser only.
Now do this for your own.
Bring your CLAUDE.md, AGENTS.md or skills. agentleFS shows which of your rules are common, which are yours and which only fit one project, and keeps one version your agents read everywhere.

