> ## Documentation Index
> Fetch the complete documentation index at: https://docs.surnex.io/llms.txt
> Use this file to discover all available pages before exploring further.

# The languages an engine searches in

> DataForSEO's list for the engine. Any of them goes with any of the engine's locations — the SERP API has no location-and-language pairs.



## OpenAPI

````yaml https://api.surnex.io/docs/openapi.json get /v1/reference/languages
openapi: 3.1.0
info:
  title: Surnex API
  version: 1.0.0
  description: >-
    The SEO platform's API.


    **The API is the product.** The dashboard is one client and the MCP server
    at `/mcp` is another. If a number needs deriving, a service derives it —
    never a React component, or the two clients drift.


    **Two kinds of auth.** The dashboard sends a Supabase access token as a
    Bearer JWT. MCP agents send `X-API-Key`, and the organization is resolved
    from the key.


    **Two data modes.** SERP results and Google Trends are fetched live on
    request. Everything else is written by the worker and read from Postgres, so
    a freshly-created project returns empty until its jobs complete.
servers:
  - url: https://api.surnex.io
    description: Surnex API
security: []
paths:
  /v1/reference/languages:
    get:
      tags:
        - reference
      summary: The languages an engine searches in
      description: >-
        DataForSEO's list for the engine. Any of them goes with any of the
        engine's locations — the SERP API has no location-and-language pairs.
      parameters:
        - schema:
            type: string
            enum:
              - google
              - bing
              - yahoo
              - baidu
              - naver
              - seznam
            default: google
          required: false
          name: engine
          in: query
      responses:
        '200':
          description: Languages by name; none for Naver
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    enum:
                      - true
                  data:
                    type: array
                    nullable: true
                    items:
                      type: object
                      properties:
                        language_code:
                          type: string
                        name:
                          type: string
                        has_volume:
                          type: boolean
                      required:
                        - language_code
                        - name
                required:
                  - success
                  - data

````

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