MCP Servers

Crowdin MCP Server

Enables AI assistants to manage Crowdin translation projects with tools for listing projects, files, source strings, translations, and performing bulk search-and-replace operations.

README

Crowdin MCP Server

A Model Context Protocol (MCP) server that exposes Crowdin translation management capabilities as tools for AI assistants.

Features

The server provides the following tools:

Tool	Description
`list_projects`	List all accessible Crowdin projects
`get_project`	Get detailed project information
`list_files`	List all source files in a project
`translation_progress`	Get translation & approval progress by language
`list_source_strings`	List source strings with filtering (file, CroQL, text)
`get_source_string`	Get a single source string by ID
`list_language_translations`	List translations for a language
`list_string_translations`	List all translations for a specific string
`add_translation`	Add or propose a new translation
`delete_translation`	Delete a specific translation
`delete_all_translations`	Delete all translations for a string
`approve_translation`	Approve a translation
`remove_approval`	Remove a translation approval
`search_and_replace_translations`	Bulk find & replace in translations

Prerequisites

Node.js >= 18
A Crowdin API token

Installation

npm install

Configuration

Set the CROWDIN_TOKEN environment variable:

export CROWDIN_TOKEN="your-crowdin-api-token"

Usage

Development

npm run dev

Production

npm run build
npm start

MCP Client Configuration

Add the server to your MCP client (e.g. VS Code, Claude Desktop):

{
  "mcpServers": {
    "crowdin": {
      "command": "node",
      "args": ["dist/index.js"],
      "env": {
        "CROWDIN_TOKEN": "your-crowdin-api-token"
      }
    }
  }
}

Or for development with tsx:

{
  "mcpServers": {
    "crowdin": {
      "command": "npx",
      "args": ["tsx", "src/index.ts"],
      "env": {
        "CROWDIN_TOKEN": "your-crowdin-api-token"
      }
    }
  }
}

Scripts

Utility scripts in scripts/ for bulk translation operations:

Script	Purpose
`fix-translations.ts`	Bulk search & replace for branding updates
`fix-followup.ts`	Follow-up fixes after initial bulk update
`fix-individual-qa.ts`	Fix individual QA issues
`approve-fixes.ts`	Approve corrected translations
`verify-fixes.ts`	Verify applied fixes
`assess-translations.ts`	Assess translation quality
`compare-translations.ts`	Compare translations across languages
`revoke-all-approvals.ts`	Revoke all approvals for a language
`search-replace-preview.ts`	Preview search & replace changes

Run any script with:

npx tsx scripts/<script-name>.ts

Tech Stack

TypeScript
@modelcontextprotocol/sdk — MCP server SDK
@crowdin/crowdin-api-client — Crowdin API client

License

MIT

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