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.

Can Claude Code translate my app?

Yes. With i18nstack installed, Claude Code translates your locale files into 46 languages using language-specific skills that enforce native-writer rules, then validates the output for missing keys, placeholder drift, and plural errors.

How do I do i18n with Claude Code?

Install i18nstack with one command. It adds slash commands for wrapping hardcoded strings, auditing coverage, converting file formats, pseudo-localizing, validating, and translating, so the whole i18n workflow runs inside Claude Code.

What file formats does i18nstack support?

32 formats, including JSON, i18next, YAML, XLIFF 1.2 and 2.0, Gettext PO, Android XML, iOS .strings and String Catalogs, Flutter ARB, .NET RESX, Java Properties, CSV, Excel, TOML, TMX, and SRT.

Yes. i18nstack is open source under the MIT license. Translation runs through your existing Claude Code subscription, so there are no extra API keys or per-word fees.

How is i18nstack different from the i18n Agent platform?

i18nstack is a free toolkit that runs locally in Claude Code. The i18n Agent platform adds a multi-model quality pipeline, team management, and integrations with Shopify, Klaviyo, Webflow, GitHub, and app stores. Many teams start with i18nstack and move to the platform as volume grows.

What languages does i18nstack translate?

46 languages, each with a dedicated skill: major European, Asian, and Middle Eastern languages, including regional variants like Brazilian Portuguese and Traditional Chinese.

How does i18nstack keep translation quality high?

Each language skill encodes native-writer rules such as formality registers, particle selection, plural grammar, and script conventions. After translation, i18n-validate acts as a release gate that checks structure, placeholders, and CLDR plural coverage.

Does i18nstack work outside Claude Code?

The three CLI tools (i18n-convert, i18n-pseudo, i18n-validate) are standalone binaries that work in any terminal or CI pipeline. The slash commands and translation skills are built for Claude Code.

The Open-Source i18n Toolkit for Claude Code

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

i18nstack turns Claude Code into a full localization team: a format engineer, a QA tester, a release gate, and 46 native-quality translators. One install command. MIT-licensed. No signup.

Install with one command

git clone --depth 1 https://github.com/i18n-agent/i18nstack.git ~/.claude/skills/i18nstack && ~/.claude/skills/i18nstack/setup

View on GitHub Read the guides

Three Battle-Tested CLI Tools

Each tool works standalone or through Claude Code slash commands.

Convert 32 Translation File Formats

i18n-convert moves your strings between JSON, YAML, XLIFF, PO, Android XML, iOS .strings, ARB, RESX, and 24 more formats without losing plurals or placeholders.

i18n-convert guide

Pseudo-Localization Testing

i18n-pseudo generates pseudo-translated locale files that expose hardcoded strings, text overflow, encoding bugs, and RTL layout breakage before you pay for real translation.

i18n-pseudo guide

Translation File Validation

i18n-validate catches missing keys, placeholder drift, and malformed CLDR plurals across all your locales, with JUnit and JSON output ready for CI.

i18n-validate guide

46 Native-Quality Translation Skills

Every language ships with its own rule set written for native quality: keigo consistency in Japanese, 받침-based particles in Korean, case government in Estonian, script and place-name conventions in Chinese. Claude Code loads the right skill automatically when you translate.

Five Workflow Commands

Slash commands wrap the whole workflow: wrap hardcoded strings, audit i18n coverage, validate translations, convert formats, and generate pseudo-locales without leaving your editor.

How It Works

Install i18nstack

One git clone and a setup script. Works with Claude Code on macOS and Linux.

Ask Claude Code

"Translate my locale files to German", "audit my i18n coverage", "validate my translations". The right tool and language skill load automatically.

Ship Localized

Validated files in your repo, in your format, ready to commit. No platform, no uploads, no per-seat pricing.

Want It Managed?

i18nstack is free and runs entirely in your editor. When you need multi-model quality pipelines, team workflows, and platform integrations like Shopify, Klaviyo, and Webflow, the i18n Agent platform picks up where the toolkit leaves off.

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