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@mcpx-digital/i18n-keys

@mcpx-digital/i18n-keys

by TheoryofShadows
OverviewSchemaSourceRelated ServersDiscussionsAdmin
JavaScript
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@mcpx-digital/i18n-keys

MCP server for locale key comparison.

Compare JSON/YAML locale files for missing or extra keys across languages, find empty translations, and list flattened keys. Supports nested objects via dot-path keys.

Local files only. No translation APIs; no network calls.

Install

npx -y @mcpx-digital/i18n-keys

Related MCP server: Translations MCP Server

Cursor mcp.json example

{
  "mcpServers": {
    "i18n-keys": {
      "command": "npx",
      "args": ["-y", "@mcpx-digital/i18n-keys"]
    }
  }
}

Local clone:

{
  "mcpServers": {
    "i18n-keys": {
      "command": "node",
      "args": ["/absolute/path/to/i18n-keys-mcp/index.js"]
    }
  }
}

Tools

Tool

What it does

compare_locales

Missing/extra keys vs a base locale

find_empty_translations

Empty / null / whitespace values

list_keys

Flattened key list for one file

Example prompts

  • “Compare en.json, es.json, and fr.yaml — what’s missing in Spanish?”

  • “Find empty translations in locales/*.json”

  • “List all keys in en.json”

Development

git clone https://github.com/TheoryofShadows/i18n-keys-mcp.git
cd i18n-keys-mcp
npm install
npm test

License

MIT

Available Tools

3 tools
compare_localesA

Compare locale files for missing/extra keys vs a base locale. Supports flat and nested keys. Local locale JSON/YAML files only — does not call translation APIs.

Inputs: files (required), baseLocale.

find_empty_translationsA

Find empty/null/whitespace-only translation values in locale files. Local locale JSON/YAML files only — does not call translation APIs.

Inputs: files (required).

list_keysA

List flattened keys for a single locale file. Local locale JSON/YAML files only — does not call translation APIs.

Inputs: filePath (required).

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

Loading tool schema changelog…

    Deploy Server
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    TDQS

    A3.9/5.0

    Scored across 3 tools

    Disambiguation5/5

    Each tool targets a clearly distinct operation: enumerating keys, diffing locales against a base, and detecting empty values. There is minimal risk of confusing one for another.

    Naming Consistency5/5

    All three tools follow a strict verb_noun snake_case pattern (list_keys, compare_locales, find_empty_translations), which is predictable and readable.

    Tool Count4/5

    Three tools is a bit thin, but the server has a narrow read-only scope over local locale files, so each tool earns its place without redundancy.

    Completeness4/5

    Core inspection workflows (list, compare, find empties) are covered, but there is no way to look up a single key's value or search/sort keys, leaving minor gaps an agent must work around.

    Maintenance

    ActivitySlowing
    ResponsivenessOutdated data

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