What file formats does i18n Agent support?

i18n Agent supports 9+ file formats including JSON, YAML, CSV, XML, Markdown, Properties, and more. The service preserves structure and formatting automatically.

How much does i18n Agent cost?

i18n Agent costs €0.01 per word, which is significantly more affordable than traditional translation services that typically charge €0.15-0.25 per word.

What is MCP integration?

MCP (Model Context Protocol) integration allows i18n Agent to work directly with AI development tools like Claude Code, Cursor, and other AI-powered development environments for seamless translation workflows.

ARB (Application Resource Bundle) is Flutter's native localization format. It's JSON-based with additional conventions: @-prefixed metadata entries describe placeholders and provide translator context, and ICU MessageFormat syntax handles plurals and selects.

Will my @metadata entries be preserved?

Yes. All @-prefixed metadata entries — including @description, @placeholders, @type, and custom metadata — are preserved exactly. i18n Agent understands the ARB convention that @ entries are metadata, not translatable content.

Are placeholders like {userName} safe?

Yes. i18n Agent detects all named placeholders in your ARB files and ensures they appear unchanged in every translation. Placeholder names, order, and formatting are never modified.

How does it handle plural forms?

ARB uses ICU MessageFormat for plurals. i18n Agent generates the correct CLDR plural categories for each target language — for example, Arabic gets all six categories while Japanese only needs 'other'.

Will translated files work with flutter gen-l10n?

Yes. Translated ARB files are fully compatible with flutter gen-l10n. The @@locale header, key names, placeholder definitions, and ICU syntax are all preserved correctly.

How accurate are the translations?

i18n Agent uses a multi-model AI pipeline with built-in quality scoring. Each translation passes through technical accuracy verification, cultural adaptation, and consistency validation before delivery.

How much does it cost?

No monthly fee. You pay €0.01 per source word, per target language. Typical files cost a few euros to translate.

Translate Flutter ARB Files in Seconds

Name: i18n Agent
Price: 0.01 EUR
Rating: 4.8 (127 reviews)
Author: i18n Agent

Metadata intact. Placeholders preserved. Plural forms correct per CLDR. Your ARB files translated without breaking flutter gen-l10n.

ARB Translation Breaks Flutter Builds

ARB files look like JSON but aren't. They carry @-prefixed metadata entries, placeholder definitions with type annotations, and ICU plural forms that must follow CLDR rules exactly. Generic translation tools corrupt all of it — and flutter gen-l10n fails silently or throws cryptic errors.

@-prefixed metadata entries get translated or deleted, breaking placeholder definitions and descriptions

Placeholder names inside curly braces get translated, renamed, or stripped — causing runtime crashes

ICU plural forms need exact CLDR categories per language, but generic tools either skip them or generate invalid structures

The @@locale header gets corrupted or mismatched, causing flutter gen-l10n to assign translations to the wrong language

Source (English)

lib/l10n/app_en.arb

{
  "@@locale": "en",
  "appTitle": "My Flutter App",
  "@appTitle": {
    "description": "The title of the application"
  },
  "greeting": "Hello, {name}!",
  "@greeting": {
    "description": "A greeting with the user's name",
    "placeholders": {
      "name": {
        "type": "String",
        "example": "John"
      }
    }
  },
  "itemCount": "{count, plural, =0{No items} =1{1 item} other{{count} items}}",
  "@itemCount": {
    "description": "Number of items in the cart",
    "placeholders": {
      "count": {
        "type": "int"
      }
    }
  },
  "lastLogin": "Last login: {date}",
  "@lastLogin": {
    "placeholders": {
      "date": {
        "type": "DateTime",
        "format": "yMMMd"
      }
    }
  }
}

Translated (Japanese)

lib/l10n/app_ja.arb

{
  "@@locale": "de",
  "appTitle": "Meine Flutter-App",
  "@appTitle": {
    "description": "The title of the application"
  },
  "greeting": "Hallo, {name}!",
  "@greeting": {
    "description": "A greeting with the user's name",
    "placeholders": {
      "name": {
        "type": "String",
        "example": "John"
      }
    }
  },
  "itemCount": "{count, plural, =0{Keine Artikel} =1{1 Artikel} other{{count} Artikel}}",
  "@itemCount": {
    "description": "Number of items in the cart",
    "placeholders": {
      "count": {
        "type": "int"
      }
    }
  },
  "lastLogin": "Letzte Anmeldung: {date}",
  "@lastLogin": {
    "placeholders": {
      "date": {
        "type": "DateTime",
        "format": "yMMMd"
      }
    }
  }
}