Retrieve Supported Languages | Deepl API documentation

Retrieve Supported Languages Run in API Explorer

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Allow AI tools and LLMs to interact with the API documentation portal through MCP.

MCP server URL


        
          
            https://bump.sh/polo/hub/about-mcp/doc/deepl/mcp

Standard setup for AI tools providing an mcp.json file

{
  "Deepl MCP server": {
    "url": "https://bump.sh/polo/hub/about-mcp/doc/deepl/mcp"
  }
}

GET /v2/languages

Auth header

Retrieve the list of languages that are currently supported for translation, either as source or target language, respectively.

Query parameters

type string
Sets whether source or target languages should be listed. Possible options are:
- source (default): For languages that can be used in the source_lang parameter of translate requests.
- target: For languages that can be used in the target_lang parameter of translate requests.
Values are source or target. Default value is source.

Responses

200 application/json

JSON array where each item represents a supported language.
Hide headers attribute Show headers attribute
- X-Trace-ID
  
  A unique identifier for the request that can be included in bug reports to DeepL support.
Hide response attributes Show response attributes object
- language string Required
  
  The language code of the given language.
- name string Required
  
  Name of the language in English.
- supports_formality boolean
  
  Denotes formality support in case of a target language listing.
400

Bad request. Please check error message and your parameters.
Hide headers attribute Show headers attribute
- X-Trace-ID
  
  A unique identifier for the request that can be included in bug reports to DeepL support.
403

Authorization failed. Please supply a valid DeepL-Auth-Key via the Authorization header.
Hide headers attribute Show headers attribute
- X-Trace-ID
  
  A unique identifier for the request that can be included in bug reports to DeepL support.
404

The requested resource could not be found.
Hide headers attribute Show headers attribute
- X-Trace-ID
  
  A unique identifier for the request that can be included in bug reports to DeepL support.
413

The request size exceeds the limit.
Hide headers attribute Show headers attribute
- X-Trace-ID
  
  A unique identifier for the request that can be included in bug reports to DeepL support.
429

Too many requests. Please wait and resend your request.
Hide headers attribute Show headers attribute
- X-Trace-ID
  
  A unique identifier for the request that can be included in bug reports to DeepL support.
456

Quota exceeded. The character limit has been reached.
Hide headers attribute Show headers attribute
- X-Trace-ID
  
  A unique identifier for the request that can be included in bug reports to DeepL support.
500

Internal error.
Hide headers attribute Show headers attribute
- X-Trace-ID
  
  A unique identifier for the request that can be included in bug reports to DeepL support.
504

Resource currently unavailable. Try again later.
Hide headers attribute Show headers attribute
- X-Trace-ID
  
  A unique identifier for the request that can be included in bug reports to DeepL support.
529

Too many requests. Please wait and resend your request.
Hide headers attribute Show headers attribute
- X-Trace-ID
  
  A unique identifier for the request that can be included in bug reports to DeepL support.

GET /v2/languages

curl \
 --request GET 'https://api.deepl.com/v2/languages' \
 --header "Authorization: $API_KEY"

Response examples (200)

[
  {
    "language": "AR",
    "name": "Arabic",
    "supports_formality": false
  },
  {
    "language": "BG",
    "name": "Bulgarian",
    "supports_formality": false
  },
  {
    "language": "CS",
    "name": "Czech",
    "supports_formality": false
  },
  {
    "language": "DA",
    "name": "Danish",
    "supports_formality": false
  },
  {
    "language": "DE",
    "name": "German",
    "supports_formality": true
  },
  {
    "language": "EL",
    "name": "Greek",
    "supports_formality": false
  },
  {
    "language": "EN-GB",
    "name": "English (British)",
    "supports_formality": false
  },
  {
    "language": "EN-US",
    "name": "English (American)",
    "supports_formality": false
  },
  {
    "language": "ES",
    "name": "Spanish",
    "supports_formality": true
  },
  {
    "language": "ES-419",
    "name": "Spanish (Latin American)",
    "supports_formality": true
  },
  {
    "language": "ET",
    "name": "Estonian",
    "supports_formality": false
  },
  {
    "language": "FI",
    "name": "Finnish",
    "supports_formality": false
  },
  {
    "language": "FR",
    "name": "French",
    "supports_formality": true
  },
  {
    "language": "HE",
    "name": "Hebrew",
    "supports_formality": false
  },
  {
    "language": "HU",
    "name": "Hungarian",
    "supports_formality": false
  },
  {
    "language": "ID",
    "name": "Indonesian",
    "supports_formality": false
  },
  {
    "language": "IT",
    "name": "Italian",
    "supports_formality": true
  },
  {
    "language": "JA",
    "name": "Japanese",
    "supports_formality": true
  },
  {
    "language": "KO",
    "name": "Korean",
    "supports_formality": false
  },
  {
    "language": "LT",
    "name": "Lithuanian",
    "supports_formality": false
  },
  {
    "language": "LV",
    "name": "Latvian",
    "supports_formality": false
  },
  {
    "language": "NB",
    "name": "Norwegian (Bokmål)",
    "supports_formality": false
  },
  {
    "language": "NL",
    "name": "Dutch",
    "supports_formality": true
  },
  {
    "language": "PL",
    "name": "Polish",
    "supports_formality": true
  },
  {
    "language": "PT-BR",
    "name": "Portuguese (Brazilian)",
    "supports_formality": true
  },
  {
    "language": "PT-PT",
    "name": "Portuguese (European)",
    "supports_formality": true
  },
  {
    "language": "RO",
    "name": "Romanian",
    "supports_formality": false
  },
  {
    "language": "RU",
    "name": "Russian",
    "supports_formality": true
  },
  {
    "language": "SK",
    "name": "Slovak",
    "supports_formality": false
  },
  {
    "language": "SL",
    "name": "Slovenian",
    "supports_formality": false
  },
  {
    "language": "SV",
    "name": "Swedish",
    "supports_formality": false
  },
  {
    "language": "TH",
    "name": "Thai",
    "supports_formality": false
  },
  {
    "language": "TR",
    "name": "Turkish",
    "supports_formality": false
  },
  {
    "language": "UK",
    "name": "Ukrainian",
    "supports_formality": false
  },
  {
    "language": "VI",
    "name": "Vietnamese",
    "supports_formality": false
  },
  {
    "language": "ZH",
    "name": "Chinese (simplified)",
    "supports_formality": false
  },
  {
    "language": "ZH-HANS",
    "name": "Chinese (simplified)",
    "supports_formality": false
  },
  {
    "language": "ZH-HANT",
    "name": "Chinese (traditional)",
    "supports_formality": false
  }
]