Internationalization

What it does

When your agent uses it

• Reviewing ARB translations
• Locale setup (l10n.yaml
• Generate: true in pubspec.yaml
• Flutter gen-l10n

Example prompts

• “/internationalization”

Requirements

• Pre-approved tools (allowed-tools): Read, Glob, Grep

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

1. 1Create app_.arb in lib/l10n/arb/ (e.g., app_fr.arb)
2. 2Add translations for all keys from the template ARB file
3. 3Run flutter gen-l10n
4. 4The new locale is automatically available through AppLocalizations.supportedLocales

What it can do on your machine

Read from SKILL.md and the folder at commit 496a3c6. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Read
  • Glob
  • Grep

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Shell commands in SKILL.md call:

  • flutter

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  No URLs in SKILL.md.

  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

Internationalization loads about 1.6k tokens when it runs, and up to ~3.1k if it reads all its reference files. Until then it costs about 243 tokens; SKILL.md has 537 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~243

When it runs · the whole SKILL.md, loaded when a task matches

~1.6k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~3.1k

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

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 VeryGoodOpenSource/vgv-ai-flutter-plugin at commit 496a3c6, republished under its MIT licence (© VeryGoodOpenSource). 537 words, ~1,629 tokens.

name

internationalization

description

Best practices for internationalization (i18n) and localization (l10n) in Flutter, using the built-in `flutter_localizations` and `intl` setup with ARB files as the single source of truth. Use when adding, modifying, or reviewing ARB translations, locale setup (`l10n.yaml`, `generate: true` in `pubspec.yaml`, `flutter gen-l10n`, `localizationsDelegates`, `supportedLocales`), BuildContext l10n extensions such as `context.l10n`, hardcoded user-facing strings that should be localized, localized strings passed into shared or reusable widgets, or RTL/directional layout support with `EdgeInsetsDirectional`. Also use when asked to add or configure any third-party i18n or translation package (easy_localization, slang, flutter_i18n, or intl_utils), and when shipping or fixing a screen for a right-to-left language such as Arabic, Hebrew, Farsi, or Urdu, including mirroring padding, alignment, icons, or images, and replacing `EdgeInsets` left/right.

allowed-tools

Read, Glob, Grep

extension AppLocalizationsX on BuildContext {
  AppLocalizations get l10n => AppLocalizations.of(this);
}

// Preferred
Text(context.l10n.helloWorld);

// Avoid
Text(AppLocalizations.of(context).helloWorld);

// Shared widget — no l10n dependency
class const ConfirmDialog({
  required final String title,
  required final String message,
  required final String confirmLabel,
  required final String cancelLabel,
  super.key,
}) extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      title: Text(title),
      content: Text(message),
      actions: [
        TextButton(onPressed: () => Navigator.pop(context), child: Text(cancelLabel)),
        FilledButton(onPressed: () => Navigator.pop(context, true), child: Text(confirmLabel)),
      ],
    );
  }
}

// App-level usage — passes localized strings
showDialog<bool>(
  context: context,
  builder: (_) => ConfirmDialog(
    title: context.l10n.deleteTitle,
    message: context.l10n.deleteMessage,
    confirmLabel: context.l10n.confirm,
    cancelLabel: context.l10n.cancel,
  ),
);

© VeryGoodOpenSource, 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 4 other files (references) in skills/internationalization of VeryGoodOpenSource/vgv-ai-flutter-plugin.

• SKILL.md
• agents/openai.yaml
• references/backend.md
• references/directionality.md
• references/setup.md

Open the folder on GitHubat commit 496a3c6