Expo Tailwind Setup
CherryHQ/cherry-studio-app
Set up Tailwind CSS v4 in Expo with react-native-css and NativeWind v5 for universal styling
Official agent skill
React Native Brownfield Migration
Implements an accepted incremental brownfield migration from native iOS or Android to React Native or Expo using @callstack/react-native-brownfield.
Install React Native Brownfield Migration
$ npx skills add callstackincubator/agent-skills --skill react-native-brownfield-migration -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install callstackincubator/agent-skills react-native-brownfield-migration --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/callstackincubator/agent-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/react-native-brownfield-migration .claude/skills/react-native-brownfield-migration && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "react-native-brownfield-migration" agent skill from https://github.com/callstackincubator/agent-skills/tree/main/skills/react-native-brownfield-migration into .claude/skills/react-native-brownfield-migration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-native-brownfield-migration", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/callstackincubator/agent-skills/tree/main/skills/react-native-brownfield-migrationType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add callstackincubator/agent-skills --skill react-native-brownfield-migration -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install callstackincubator/agent-skills react-native-brownfield-migration --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/callstackincubator/agent-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/react-native-brownfield-migration .agents/skills/react-native-brownfield-migration && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "react-native-brownfield-migration" agent skill from https://github.com/callstackincubator/agent-skills/tree/main/skills/react-native-brownfield-migration into .agents/skills/react-native-brownfield-migration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-native-brownfield-migration", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add callstackincubator/agent-skills --skill react-native-brownfield-migration -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install callstackincubator/agent-skills react-native-brownfield-migration --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/callstackincubator/agent-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/react-native-brownfield-migration .cursor/skills/react-native-brownfield-migration && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "react-native-brownfield-migration" agent skill from https://github.com/callstackincubator/agent-skills/tree/main/skills/react-native-brownfield-migration into .cursor/skills/react-native-brownfield-migration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-native-brownfield-migration", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/callstackincubator/agent-skills.git --path skills/react-native-brownfield-migration--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add callstackincubator/agent-skills --skill react-native-brownfield-migration -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install callstackincubator/agent-skills react-native-brownfield-migration --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/callstackincubator/agent-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/react-native-brownfield-migration .gemini/skills/react-native-brownfield-migration && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "react-native-brownfield-migration" agent skill from https://github.com/callstackincubator/agent-skills/tree/main/skills/react-native-brownfield-migration into .gemini/skills/react-native-brownfield-migration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-native-brownfield-migration", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install callstackincubator/agent-skills react-native-brownfield-migrationInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add callstackincubator/agent-skills --skill react-native-brownfield-migration -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/callstackincubator/agent-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/react-native-brownfield-migration .github/skills/react-native-brownfield-migration && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "react-native-brownfield-migration" agent skill from https://github.com/callstackincubator/agent-skills/tree/main/skills/react-native-brownfield-migration into .github/skills/react-native-brownfield-migration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-native-brownfield-migration", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add callstackincubator/agent-skills --skill react-native-brownfield-migration -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install callstackincubator/agent-skills react-native-brownfield-migration --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/callstackincubator/agent-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/react-native-brownfield-migration .opencode/skills/react-native-brownfield-migration && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "react-native-brownfield-migration" agent skill from https://github.com/callstackincubator/agent-skills/tree/main/skills/react-native-brownfield-migration into .opencode/skills/react-native-brownfield-migration/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "react-native-brownfield-migration", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
react-native-brownfield-migration- GitHub stars
- 1.7k
- Token cost
- ~1.8k tokens
- SKILL.md length
- 597 words
- Files
- 12 (incl. references)
- Skills in repo
- 12
- Repo updated
- First seen
- Licence
- MIT
At a glance
Implements an accepted incremental brownfield migration from native iOS or Android to React Native or Expo using @callstack/react-native-brownfield.
- Works in 5 steps: Assess app state and select Expo or bare… → Perform initial setup with… → Package RN artifacts (XCFramework/AAR)… → …
- Tasks that involve Cross-platform mobile apps
- SKILL.md covers Overview, Migration Strategy, Agent Guardrails (Global) and Canonical Docs, plus 5 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
React Native Brownfield Migration is an agent skill from callstackincubator/agent-skills, published by the product's own GitHub organization. Implements an accepted incremental brownfield migration from native iOS or Android to React Native or Expo using @callstack/react-native-brownfield. Use after the brownfield path has been selected, when setting up the integration, packaging XCFramework or AAR artifacts, or adding React Native surfaces to native hosts.
Its SKILL.md is about 1.8k tokens, which your agent loads only when the skill is triggered. The skill folder holds 13 other files, including reference files (for example `agents/openai.yaml`, `references/bare-android-aar-generation.md` and `references/bare-android-native-integration.md`).
It sits in Mobile, covering Cross-platform mobile apps. It works with React Native, Expo, Android and iOS. The repository describes itself as: A collection of agent-optimized React Native skills for AI coding assistants. The licence is MIT.
When your agent uses it
- Tasks that involve Cross-platform mobile apps
Example prompts
- “Use the react-native-brownfield-migration skill to implement an accepted incremental brownfield migration from native iOS or Android to React Native…”
- “/react-native-brownfield-migration”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Assess app state and select Expo or bare path.
- Perform initial setup with @callstack/react-native-brownfield.
- Package RN artifacts (XCFramework/AAR) from the RN source app.
- Integrate one RN surface into the host app and validate startup/runtime.
- Repeat integration by feature/screen for incremental rollout.
What it can do on your machine
Read from SKILL.md and the folder at commit 61e6e7d. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
oss.callstack.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
React Native Brownfield Migration loads about 1.8k tokens when it runs, and up to ~8.3k if it reads all its reference files. Until then it costs about 88 tokens; SKILL.md has 597 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from callstackincubator/agent-skills at commit 61e6e7d, republished under its MIT licence (© callstackincubator). 597 words, ~1,759 tokens.
Download SKILL.mdSave it as
.claude/skills/react-native-brownfield-migration/SKILL.md (or your agent's skills folder). This skill also uses 11 other files; get the full folder from GitHub.- name
- react-native-brownfield-migration
- description
- Implements an accepted incremental brownfield migration from native iOS or Android to React Native or Expo using @callstack/react-native-brownfield. Use after the brownfield path has been selected, when setting up the integration, packaging XCFramework or AAR artifacts, or adding React Native surfaces to native hosts.
- license
- MIT
Migrating to React Native
Use this skill only after the decision to adopt brownfield migration has been made. When the user is still choosing between brownfield, greenfield, a checkpoint-based path, defer, or no migration, use assess-react-native-migration first.
Overview
Prescriptive workflow for incremental adoption of React Native in existing native apps using @callstack/react-native-brownfield, from initial setup through phased host integration.
- Expo track
- Bare React Native track
Use one track per task unless the user explicitly asks for migration or comparison.
Migration Strategy
Use this strategy for brownfield migration planning and execution:
- Assess app state and select Expo or bare path.
- Perform initial setup with
@callstack/react-native-brownfield. - Package RN artifacts (
XCFramework/AAR) from the RN source app. - Integrate one RN surface into the host app and validate startup/runtime.
- Repeat integration by feature/screen for incremental rollout.
Agent Guardrails (Global)
Apply these rules across all reference files:
- Select one path first (Expo or bare) and do not mix steps.
- Use placeholders from the docs (
<framework_target_name>,<android_module_name>,<registered_module_name>) and resolve from project files. - Validate each packaging command before moving to host integration.
- Prefer official docs for long platform snippets and CLI option details.
- Keep host apps isolated from direct React Native APIs when possible (facade approach).
- For startup/runtime verification, use
agent-deviceto open the host app, navigate to the RN surface, capture snapshots/screenshots, and collect device evidence. If it is missing and verification needs it, install it through the environment's approved/trusted path or ask the user to install or enable it.
Canonical Docs
- Quick Start
- Expo Integration
- iOS Integration
- Android Integration
- Brownfield CLI
- Guidelines
- Troubleshooting
Path Selection Gate (Must Run First)
Before selecting any reference file, classify the project:
- If no React Native app exists yet, use Expo creation path:
- If React Native app exists, inspect
package.jsonandapp.json:- Expo if
expois present or Expo plugin workflow is requested. - Bare RN if native folders and direct RN CLI workflow are used without Expo path requirements.
- Expo if
- If still unclear, ask one disambiguation question.
- Continue with exactly one path.
Show full SKILL.md (249 more words)Show less
When to Apply
Reference this package when:
- Implementing an accepted incremental migration from native-only apps to React Native or Expo
- Creating brownfield integration flows for Expo or bare React Native projects
- Performing initial setup with
@callstack/react-native-brownfield - Generating iOS XCFramework artifacts from a React Native app
- Generating and publishing Android AAR artifacts from a React Native app
- Integrating generated artifacts into host iOS/Android apps
Quick Reference
| File | Description |
|---|---|
| quick-start.md | Shared preflight and mandatory path-selection gate |
| expo-create-app.md | Scaffold a new Expo app before Expo brownfield setup |
| expo-quick-start.md | Expo plugin setup and packaging readiness |
| expo-ios-integration.md | Expo iOS packaging and host startup integration |
| expo-android-integration.md | Expo Android packaging, publish, and host integration |
| bare-quick-start.md | Bare React Native baseline setup |
| bare-ios-xcframework-generation.md | Bare iOS XCFramework generation |
| bare-android-aar-generation.md | Bare Android AAR generation and publish |
| bare-ios-native-integration.md | Bare iOS host integration |
| bare-android-native-integration.md | Bare Android host integration |
Problem -> Skill Mapping
| Problem | Start With |
|---|---|
| Need migration path decision first | assess-react-native-migration |
| Need Expo vs bare path decision | quick-start.md |
| Need to create a new Expo app for brownfield | expo-create-app.md |
| Need Expo brownfield setup and plugin wiring | expo-quick-start.md |
| Need Expo iOS brownfield integration | expo-ios-integration.md |
| Need Expo Android brownfield integration | expo-android-integration.md |
| Need bare RN baseline setup | bare-quick-start.md |
| Need bare RN iOS XCFramework generation | bare-ios-xcframework-generation.md |
| Need bare RN Android AAR generation/publish | bare-android-aar-generation.md |
| Need bare RN iOS host integration | bare-ios-native-integration.md |
| Need bare RN Android host integration | bare-android-native-integration.md |
Related Skills
- Assess React Native migration before selecting the migration path.
© callstackincubator, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 11 other files (references) in skills/react-native-brownfield-migration of callstackincubator/agent-skills.
- SKILL.md
- agents/openai.yaml
- references/bare-android-aar-generation.md
- references/bare-android-native-integration.md
- references/bare-ios-native-integration.md
- references/bare-ios-xcframework-generation.md
- references/bare-quick-start.md
- references/expo-android-integration.md
- references/expo-create-app.md
- references/expo-ios-integration.md
- references/expo-quick-start.md
- references/quick-start.md
Open the folder on GitHubat commit 61e6e7d
Compare with similar skills
React Native Brownfield Migration next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| React Native Brownfield Migration this skillcallstackincubator/agent-skills | 1.7k | — | ~1.8k | Automated safety check: Pass | MIT | |
| Expo Tailwind SetupCherryHQ/cherry-studio-app | 4k | 8 repos | ~3k | Automated safety check: Pass | MIT | |
| Screenmapaleqsio/screenmap | 239 | — | ~7.2k | Automated safety check: Pass | MIT | |
| Expo Brownfield Integrationmweinbach/agent-coworker | 156 | 2 repos | ~900 | Automated safety check: Notes | Custom licence | |
| Expo UIarcboxlabs/linkcode | 155 | — | ~1.2k | Automated safety check: Pass | MIT | |
| Simfleetentropyconquers/simfleet | 117 | — | ~1.5k | Automated safety check: Pass | MIT |
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Screenmap
aleqsio/screenmap
Generate a visual navigation map of an Expo / React Native or NativeScript app.
Expo Brownfield Integration
mweinbach/agent-coworker
Helps add Expo and React Native to an existing native iOS or Android app, and choose between a prebuilt AAR or XCFramework and a fully integrated build.
Expo UI
arcboxlabs/linkcode
Framework (OSS). An agent skill from arcboxlabs/linkcode.
Simfleet
entropyconquers/simfleet
Operate a simfleet device fleet: slimmed iOS simulators and Android emulators, parallel React Native worktree lanes with leased Metro ports, the native build cache, and per-agent device claims.
Code Review React Native
talsec/Free-RASP-ReactNative
Performs strict code reviews on React Native plugin projects covering TypeScript, the Kotlin (Android) and Swift (iOS) native bridges, and the Expo config plugin.
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Related
Works with
Categories
Questions about React Native Brownfield Migration
What does React Native Brownfield Migration do?
Implements an accepted incremental brownfield migration from native iOS or Android to React Native or Expo using @callstack/react-native-brownfield. React Native Brownfield Migration is an agent skill from callstackincubator/agent-skills, published by the product's own GitHub organization. Implements an accepted incremental brownfield migration from native iOS or Android to React Native or Expo using @callstack/react-native-brownfield.
When should I use React Native Brownfield Migration?
React Native Brownfield Migration fits situations like: tasks that involve Cross-platform mobile apps.
How do I install React Native Brownfield Migration in Claude Code?
Run `npx skills add callstackincubator/agent-skills --skill react-native-brownfield-migration -a claude-code`. Or copy the skill folder (skills/react-native-brownfield-migration in callstackincubator/agent-skills) into .claude/skills/react-native-brownfield-migration in your project. Claude Code loads it when a task matches its description.
How do I install React Native Brownfield Migration in Codex?
Run `npx skills add callstackincubator/agent-skills --skill react-native-brownfield-migration -a codex`. Or copy the skill folder (skills/react-native-brownfield-migration in callstackincubator/agent-skills) into .agents/skills/react-native-brownfield-migration in your project. Codex loads it when a task matches its description.
Can I use React Native Brownfield Migration in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add callstackincubator/agent-skills --skill react-native-brownfield-migration -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/react-native-brownfield-migration, .gemini/skills/react-native-brownfield-migration, .github/skills/react-native-brownfield-migration and .opencode/skills/react-native-brownfield-migration in your project.
What does React Native Brownfield Migration need to run?
SKILL.md names no scripts, command-line tools or credentials: React Native Brownfield Migration is instructions for the agent only.
Does React Native Brownfield Migration access the network?
SKILL.md names 1 domain. As links in the text: oss.callstack.com. This is read from the text; nothing was executed.
Is React Native Brownfield Migration safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does React Native Brownfield Migration use?
React Native Brownfield Migration is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does React Native Brownfield Migration use?
About 1.8k tokens (SKILL.md is roughly 7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 6.6k tokens, read only when the agent opens those files.
What are the alternatives to React Native Brownfield Migration?
Skills that share tags, products or a category with React Native Brownfield Migration: Expo Tailwind Setup (CherryHQ/cherry-studio-app, 4k stars), Screenmap (aleqsio/screenmap, 239 stars), Expo Brownfield Integration (mweinbach/agent-coworker, 156 stars) and Expo UI (arcboxlabs/linkcode, 155 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains React Native Brownfield Migration?
callstackincubator (a GitHub organization, an official publisher) maintains it in callstackincubator/agent-skills, which has 1,664 GitHub stars. The repository holds 12 skills in this directory. The repository was last updated on October 6, 2026.
Source: callstackincubator/agent-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.