Create an i18n specialist with Claude Code subagents

As of Claude Code version 1.0.60 you can now create specialized coding agents that the primary agent can hand off specific tasks to. Each one gets its own context window and can be configured with different tools and expertise.

Why is this useful? The big problem with AI coding assistants is context pollution. You're working on some React component, then you need to debug a database query, then you want to write some tests, then back to the component. Pretty soon your conversation is this sprawling mess and the AI is trying to hold all of this in its head at once. Subagents solve this by letting you create focused specialists.

I immediately thought of translations. We run a travel booking site and use next-intl with 6 different locales. The i18n guidance in our sub-CLAUDE next/app/CLAUDE.md file worked really well but was eating up hundreds of lines. Why would you waste those lines on context when you're only working on something totally unrelated to translations like Frame Motion or refactoring components?

Now we've moved all translation specific instructions out of CLAUDE.md and into an agent file in .claude/agents/i18n-specialist.md. When Claude encounters a translation task, it hands it off to your i18n specialist.

Feel free to use our subagent file and adapt for your use case.