Localization Resource Integrity

Checks the structural integrity of translated resource dictionaries against a source dictionary you supply: missing keys, extra keys, disallowed empty strings, and exact placeholder integrity (name and, for printf_named, conversion type, matched by exact multiplicity, order-independent) under an explicitly declared placeholder syntax (double_brace `{{name}}` or printf_named `%(name)s`/`%(name)d`/`%(name)f`). Malformed placeholder syntax is reported as a per-key issue in a completed report, never silently dropped. Requests containing likely ICU MessageFormat plural/select constructs are refused outright rather than partially validated. Never translates anything and never estimates translation quality, tone, or correctness -- this is a structural integrity check only, scoped to exactly the resources you provide.

Pricing

0.03 per analysis

Requires x402 capable MCP client with wallet for payment settlement.

Input Schema

{
  "type": "object",
  "additionalProperties": false,
  "required": [
    "source_locale",
    "source",
    "translations",
    "syntax"
  ],
  "properties": {
    "source_locale": {
      "type": "string",
      "minLength": 1,
      "maxLength": 35
    },
    "source": {
      "type": "object",
      "additionalProperties": {
        "type": "string",
        "maxLength": 4096
      },
      "minProperties": 1,
      "maxProperties": 500
    },
    "translations": {
      "type": "object",
      "minProperties": 1,
      "maxProperties": 20,
      "additionalProperties": {
        "type": "object",
        "additionalProperties": {
          "type": "string",
          "maxLength": 4096
        },
        "maxProperties": 500
      }
    },
    "syntax": {
      "type": "string",
      "enum": [
        "double_brace",
        "printf_named"
      ]
    },
    "allow_empty": {
      "type": "boolean"
    }
  }
}

Example Input

{
  "source_locale": "en",
  "source": {
    "greeting.hello": "Hello, {{name}}!",
    "cart.items_count": "You have {{count}} item{{suffix}} in your cart.",
    "checkout.total": "Total due: {{amount}}"
  },
  "translations": {
    "fr": {
      "greeting.hello": "Bonjour, {{name}} !",
      "cart.items_count": "Vous avez {{count}} article{{suffix}} dans votre panier.",
      "checkout.total": "Montant total : {{amount}}"
    },
    "es": {
      "greeting.hello": "¡Hola, {{name}}!",
      "cart.items_count": "Tiene {{count}} artículos en su carrito."
    }
  },
  "syntax": "double_brace"
}

Example Output

{
  "ok": true,
  "summary": {
    "source_keys": 3,
    "locales": 2,
    "passing_locales": 1,
    "issues": 2
  },
  "locales": [
    {
      "locale": "fr",
      "missing_keys": [],
      "extra_keys": [],
      "issues": [],
      "passed": true
    },
    {
      "locale": "es",
      "missing_keys": [
        "checkout.total"
      ],
      "extra_keys": [],
      "issues": [
        {
          "key": "cart.items_count",
          "code": "missing_placeholder",
          "expected": "suffix=1",
          "actual": "suffix=0"
        }
      ],
      "passed": false
    }
  ],
  "source_issues": [],
  "scope": "resource_structure_and_placeholders_only"
}

Limitations

• Checks structural integrity only (missing/extra keys, disallowed empty strings, exact placeholder name/type multiplicity) -- never evaluates translation quality, tone, grammar, or correctness of the translated text itself (scope: resource_structure_and_placeholders_only).
• Flat resource keys only: dots and brackets in a key are treated as literal characters of that key, never expanded into a nested tree.
• Supports exactly two placeholder syntaxes, and only what is documented for each: double_brace `{{identifier}}` (ASCII letter/underscore then alphanumerics/underscore/dot, optional surrounding ASCII whitespace) and printf_named `%(name)s|d|f` plus the `%%` literal escape. A single, non-doubled `{` or `}` is always literal text.
• No ICU MessageFormat support: input that looks like it contains a plural/select/selectordinal construct is refused outright at admission, never partially validated.
• HTML or any other markup inside a string is treated as opaque literal text and is never parsed or validated as markup.
• Malformed placeholder syntax in an otherwise well-shaped resource is reported as a per-key issue in the completed report, not dropped; a bad source string is reported in source_issues and makes every locale that has that key fail, since comparison against a broken source is undefined -- never a false pass.
• Language/locale codes are treated as opaque caller-supplied labels (non-empty, <= 35 characters); there is no built-in registry of valid locales.
• Bounded input only: 1..20 target locales, source/each target dictionary <= 500 keys, each key <= 128 characters, each string value <= 4096 characters, total request body <= 128 KiB, JSON depth <= 8, <= 20000 JSON nodes.
• Accepts only plain, proto-safe JSON objects/strings/booleans; unknown top-level options and forbidden key names (__proto__, constructor, prototype) are refused.
• No network access, no logging, no dependencies.
• Results at most 96 KiB; retry identical input and authorization within 24 hours to recover a purchase.

Connect via MCP

Add to your MCP client configuration:

{
  "mcpServers": {
    "localization-resource-integrity": {
      "type": "http",
      "url": "https://mcp-factory.bowling-anthony.workers.dev/localization-resource-integrity/mcp"
    }
  }
}