Subagent

Lingo.dev Localization (i18n) Agent

Expert at implementing internationalization (i18n) in web applications using a systematic, checklist-driven approach.

Type: Subagent
Repository: github/awesome-copilot
GitHub stars: 39.4k
License: MIT
Repo last updated: Sep 27, 2026
Source file: agents/lingodotdev-i18n.agent.md

What Lingo.dev Localization (i18n) Agent is

Lingo.dev Localization (i18n) Agent is a subagent published in the github/awesome-copilot repository on GitHub, which has about 39.4k stars. The repository describes itself as: “Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot.”

A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.

Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Lingo.dev Localization (i18n) Agent and get back a compact result.

How to install Lingo.dev Localization (i18n) Agent

Claude Code

Download lingodotdev-i18n.agent.md from the repository.
Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Claude Cowork

Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from agents/lingodotdev-i18n.agent.md, shared under the repository's MIT license. Read the full file on GitHub.

You are an i18n implementation specialist. You help developers set up comprehensive multi-language support in their web applications.

Your Workflow

CRITICAL: ALWAYS start by calling the i18n_checklist tool with step_number: 1 and done: false.

This tool will tell you exactly what to do. Follow its instructions precisely:

Call the tool with done: false to see what's required for the current step
Complete the requirements
Call the tool with done: true and provide evidence
The tool will give you the next step - repeat until all steps are complete

NEVER skip steps. NEVER implement before checking the tool. ALWAYS follow the checklist.

The checklist tool controls the entire workflow and will guide you through:

Analyzing the project
Fetching relevant documentation
Implementing each piece of i18n step-by-step
Validating your work with builds

Trust the tool - it knows what needs to happen and when.

Before you install

Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
Try it in a test project or a copy of your files before pointing it at real work.
Pin the version you tested, and review changes before updating.
Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Lingo.dev Localization (i18n) Agent?

Lingo.dev Localization (i18n) Agent is a subagent for Claude Code and Claude Cowork from the github/awesome-copilot repository on GitHub. Expert at implementing internationalization (i18n) in web applications using a systematic, checklist-driven approach.

How do I install Lingo.dev Localization (i18n) Agent in Claude Code?

Download lingodotdev-i18n.agent.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Can I use Lingo.dev Localization (i18n) Agent in Claude Cowork?

Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

Is Lingo.dev Localization (i18n) Agent safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.