Pointer to the upstream skill for React and Next.js performance work (data fetching, bundle size, re-renders), installed from upstream.
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
# Vercel React Best Practices
Coco does not ship this skill because the upstream ships no licence file or copyright notice (its README and SKILL.md frontmatter only say MIT), so this page points to the original instead.
## Install from upstream
Review the upstream repository before you run its installer; Coco does not vet or pin it.
```bash
npx skills add vercel-labs/agent-skills@vercel-react-best-practices
```
## Source
https://github.com/vercel-labs/agent-skills/tree/063bee94c3f4df8453406c830b0a7df0f2860278/skills/react-best-practices
Coco will not reproduce the upstream text. If you are the author and want this link removed or changed, see docs/personas/TAKEDOWN.md.
The line at the top of this page pins the label git:20261008.27f42c5, 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.
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 (899 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
coco-research/coco · 797 stars · license a license file GitHub does not identify · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_agcmgk2nclmborfc
GET https://markdownregistry.com/api/v1/resolve?ref=coco-research/coco/vercel-react-best-practices
GET https://markdownregistry.com/api/v1/blob/59f1ee83b12deb3dc4393c73e33f2c7c32ac3ab7f1f142eb99d3f7e856fea1bd
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.
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