MCP Server that turns your AI agent into a localization expert with token-efficient i18n translation
If you already use Ai, the ai mcp server is the piece that lets your assistant work with it directly. MCP Server that turns your AI agent into a localization expert with token-efficient i18n translation.
AI-powered translation for app localization. Automatically translate your i18n files to 165 languages using AI. Supports JSON, JSONC, Flutter ARB, YAML, PO, XLIFF, and all other text-based localization formats with intelligent project structure detection.
The toolset is worth reading before you wire it up, because it tells you what the integration is really for:
Jenkins — stages { stage('Translate') { steps { sh 'npm install' sh 'npx ai-l10n translate ./locales/en.json --update' } } } }Terminology — Use terminology to enforce consistent terms across translations. List synonyms that should be replaced by the preferred term:Configuration is passed through the environment: L10N_API_KEY, YOUR_API_KEY. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
Installation goes through your MCP client rather than a global install: point it at ai-l10n on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.
Among the payments and commerce options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Ai's toolset — Jenkins, Terminology — is a fair guide to whether it matches your workflow. It is maintained by l10n-dev; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| Jenkins | stages { stage('Translate') { steps { sh 'npm install' sh 'npx ai-l10n translate ./locales/en.json --update' } } } } |
| Terminology | Use terminology to enforce consistent terms across translations. List synonyms that should be replaced by the preferred term: |
{
"mcpServers": {
"ai-l10n": {
"command": "npx",
"args": ["-y", "ai-l10n"],
"env": {
"L10N_API_KEY": "your-value",
"YOUR_API_KEY": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| L10N_API_KEY | Credential the server authenticates with. | Yes |
| YOUR_API_KEY | Credential the server authenticates with. | Yes |
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