i18n-agent/i18nstack

i18nstack is a toolkit that adds localization capabilities to AI coding agents like Claude Code, Grok, and Codex. Localization, often called i18n, is the work of adapting an app's text so it can be shown in many languages. This project packages that work into tools and skills your AI assistant can use directly. The project installs with a single command and adds three command line tools plus a set of slash commands your coding agent can run. One tool converts translation files between more than 30 formats, such as JSON, Android XML, and Apple's string files, and warns you before a conversion would lose data. A second tool creates pseudo translations, which are fake versions of your text used to catch bugs like hardcoded strings or text that overflows its container, before you pay for real translation work. A third tool checks translation files for problems such as missing keys or broken placeholders, and it is built to run in continuous integration pipelines. Beyond the CLI tools, i18nstack ships 46 translation skills, one for each supported language, so you can ask your AI agent to translate a file into Japanese or German and it will follow rules specific to that language, like formality levels and plural forms, instead of producing a generic machine translation. The suggested workflow is to convert your source file into the format your project needs, generate a pseudo translation to confirm every piece of text actually goes through the localization system, translate the real content using the matching language skill, and finally validate the result before shipping. Everything installs by cloning the repository into your agent's skills folder and running a setup script, and updates apply with a simple git pull. This project is aimed at developers who are adding or maintaining multi-language support in an app and want their AI coding assistant to handle the repetitive parts of that process. It is licensed under MIT.