flutter-setup-localization Skill for Claude: What It Does and How to Install It

Makes Claude set up translations in a Flutter app with flutter_localizations, intl, an l10n.yaml file and ARB files.

Installs: 37.7K; on skills.sh
Stars: 3.1K; on GitHub
Updated: Nov 2026; last repo commit

This is the Flutter team's localization skill. Claude adds the flutter_localizations and intl packages, turns on generate: true in pubspec.yaml, creates l10n.yaml and wires the delegates into MaterialApp.

Then it writes ARB files such as app_en.arb and app_es.arb and generates the AppLocalizations class. Placeholders, plurals and select strings are covered too.

Good for

Flutter developers starting localization on a new project
Teams adding a second language such as Spanish
Anyone needing plurals, placeholders or select strings in translations

Install flutter-setup-localization

Claude Code

Copy this prompt.

Install the flutter-setup-localization skill in Claude Code. Run this command:

npx skills add https://github.com/flutter/agent-plugins --skill flutter-setup-localization

Then check that it loaded and tell me how to use it.

2
Paste it into Claude Code. It shows the change and asks before running it.

Requires Node.js.

From its listing on skills.sh. Source.

What's in the skill

When it loads

Add `flutter_localizations` and `intl` dependencies, enable "generate true" in `pubspec.yaml`, and create an `l10n.yaml` configuration file. Use when initializing localization support for a new Flutter project.

Sections in SKILL.md

Contents
Core Concepts
Setup Workflow
1. Add Dependencies
2. Enable Code Generation
3. Create Configuration File
4. Configure the App Entry Point
Implementation Workflow
1. Define ARB Files
2. Generate Localization Classes
3. Consume Localized Strings
Advanced Formatting
Placeholders
Plurals
Selects
Examples

Key facts

Author: Flutter team
License: BSD-3-Clause
Installs on skills.sh: 37,711 (Nov 2, 2026)
GitHub stars: 3,136 for the whole flutter/agent-plugins repo (Nov 2, 2026)
Last repo commit: Nov 1, 2026
What it includes: 1 file: SKILL.md (no scripts)
Needs: A Flutter project
Part of: flutter/agent-plugins, which lists 10 Flutter skills in its README
Works in: Not listed. The README names no supported clients and links to docs.flutter.dev/ai/get-started for setup in your preferred agent

What it includes

Runs flutter pub add for flutter_localizations and intl
Adds both packages and checks that pubspec.yaml lists them.
Try: “Setup localization and add English and Spanish translations.”
Runs code · Add dependencies
Sets generate: true in pubspec.yaml
Turns on the flutter generate flag so Flutter builds the localization classes.
Write · Enable code generation
Points to lib/l10n and app_en.arb
Sets arb-dir, template-arb-file, output-localization-file and synthetic-package.
Write · Create l10n.yaml
Adds delegates and supported locales
Imports the generated AppLocalizations and the flutter_localizations library, then sets them on MaterialApp or CupertinoApp.
Write · Wire up MaterialApp
Adds strings to app_en.arb and other locales
New strings go in the template file with a description. Edited strings are updated in every locale file.
Write · Write ARB files
Runs flutter pub get to build AppLocalizations
Checks the terminal for ARB syntax errors, fixes them and runs it again.
Runs code · Generate classes
Placeholders, plurals and selects
Placeholders are typed in metadata. Plurals need an other case. Selects handle conditional text such as gendered strings.
Write · Advanced formatting

From the official docs

Permissions

Low risk

The skill edits pubspec.yaml, creates config and ARB files and runs flutter pub commands. Review the diff before you commit.

What it can do

Read your data
Create and change things
Delete things
Read-only mode

Watch out for

It edits pubspec.yaml and your app entry point
Dependencies, the generate flag and the app delegates change. Review the diff before you commit. github.com

Security advisories

No published security advisories as of Nov 2, 2026.

Technical details

Turning on read-only	No read-only mode. Use version control.
Talks to	Package downloads when flutter pub add and flutter pub get run
Sign-in and keys	SKILL.md does not mention any account or key.
Scopes	Edits pubspec.yaml, l10n.yaml, ARB files and main.dart Runs flutter pub add and flutter pub get

Questions

What does the flutter-setup-localization skill do?

It guides Claude through adding translations to a Flutter app. Claude sets up the packages, the config file, the ARB files and the generated AppLocalizations class.

How do I install flutter-setup-localization?

Use the install box at the top of this page. The skill is one SKILL.md file, so there is nothing else to download. Start a new session afterwards so it loads.

Does it translate my text?

The skill covers the setup and how to write ARB files. Its own example prompt asks Claude to add English and Spanish translations, so Claude writes the translated strings, and you should have someone check them.

Is it for new or existing projects?

Its description says to use it when initialising localization for a new Flutter project. It also has a workflow for adding or editing strings later.

Does it support plurals and placeholders?

Yes. It covers typed placeholders, plural strings (the other case is mandatory) and select strings.

Is flutter-setup-localization safe?

It edits pubspec.yaml and your app entry point, and runs flutter pub add and flutter pub get. Review the diff and keep the project under version control.

Does flutter-setup-localization work in Codex or Cursor?

The README does not list supported clients. It links to https://docs.flutter.dev/ai/get-started for installing the plugins in your preferred agent, so follow that guide for Codex or Cursor.

Information

updated Nov 2, 2026

Repository: flutter/agent-plugins
Folder: skills/flutter-setup-localization

flutter/agent-plugins skills.sh

Sources

Docs, issue trackers and discussions this page is built from.

Show all 2

flutter-setup-localization SKILL.md · github.com
Flutter agent-plugins README · github.com