React Sync

OrganizationPopular

vercel

react-sync

Build local React changes in the bundle variants consumed by Next.js, sync them into a local Next.js checkout, and test the resulting integration. Use when working on React changes that need validation in Next.js, or when asked to run buildForNext, pnpm sync-react, or synchronize a React checkout with Next.js.

Overview

Publisher	vercel
Repository	`next.js`
Skill name	`react-sync`
Stars	143.1K
Forks	34.7K
Bundled files	1
License	MIT
Links	Skill source Repository Homepage

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
1 bundled files
Scripts, templates, and references the model can read while it works. Files are read-only and never executed.
Open source
Published by vercel on GitHub. Read the source before you install it.

Installation

Install the React Sync AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/vercel/next.js/tree/canary/.agents/skills/react-sync
Enable the skill in any chat where you want it available.

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/vercel/next.js.git /tmp/next.js
mkdir -p .claude/skills
cp -r /tmp/next.js/.agents/skills/react-sync .claude/skills/react-sync

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable React Sync in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads React Sync on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so React Sync is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Sync React to Next.js

Use this skill when syncing a local React checkout into this Next.js checkout.

Build and sync

Build React from its own checkout. Pass this skill's script by its absolute path, because the working directory must be the React repository.

bash
cd <react-repo>
bash <next-repo>/.agents/skills/react-sync/scripts/build-for-next.sh

This creates build/oss-stable and build/oss-experimental with the bundle variants that Next.js consumes.

Sync the build into Next.js:
```
bash
cd <next-repo>
PATH="$(dirname "$(command -v corepack)"):$PATH" \
  pnpm sync-react --version <react-repo>
```
Work around a Codex PATH-precedence bug by keeping the directory containing the active Corepack shim first on PATH. Codex injects a separate bundled pnpm executable ahead of the user's Corepack shim, and command lookup happens before Corepack reads the repository's packageManager field. The prefix makes both this command and sync-react's nested pnpm install resolve through Corepack to the repository-pinned pnpm version. Invoking only the outer command with corepack pnpm is insufficient because the nested command still resolves pnpm from PATH.
Inspect the sync result before testing. Preserve unrelated changes in both checkouts. Rebuild Next.js when required, then run the focused test command matching the changed behavior.

Related Skills

$react-vendoring - vendored React runtime and type boundaries after syncing.

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

scripts/build-for-next.sh1 KB

Frequently asked questions

What does the React Sync AI skill do?

Why use React Sync on TypingMind?

Because you install it once and use it with any model. React Sync is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install React Sync in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/vercel/next.js/tree/canary/.agents/skills/react-sync. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use React Sync?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with React Sync?

As many as you like. As long as a model supports skills, you can use React Sync with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the React Sync AI skill free?

Yes. It is published on GitHub by vercel under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Sync React to Next.js

Build and sync

Related Skills

Bundled files

Frequently asked questions

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