SimpleLocalize Languages API

Manage project languages

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/simplelocalize-languages-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

simplelocalize-languages-api-openapi.yml Raw ↑
openapi: 3.1.0
info:
  title: SimpleLocalize Customers Languages API
  description: The SimpleLocalize API is a REST API for managing translations, languages, projects, and customers. It enables developers to create, read, update, and delete translations programmatically, import and export translation files in 30+ formats, auto-translate using DeepL, Google Translate, or OpenAI, and publish translations to CDN for use in web, mobile, and backend applications.
  version: v2
  contact:
    name: SimpleLocalize Support
    url: https://simplelocalize.io/contact/
  termsOfService: https://simplelocalize.io/terms-of-service/
  license:
    name: Commercial
    url: https://simplelocalize.io/terms-of-service/
servers:
- url: https://api.simplelocalize.io
  description: SimpleLocalize Production API
security:
- ApiKeyAuth: []
tags:
- name: Languages
  description: Manage project languages
paths:
  /api/v1/languages:
    get:
      operationId: listLanguages
      summary: List Languages
      description: Retrieves all languages configured in the project.
      tags:
      - Languages
      responses:
        '200':
          description: Languages retrieved successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LanguageListResponse'
        '401':
          description: Unauthorized - invalid or missing API key
    post:
      operationId: createLanguage
      summary: Create Language
      description: Creates a new language in the project with a unique language key.
      tags:
      - Languages
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateLanguageRequest'
      responses:
        '200':
          description: Language created successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LanguageResponse'
        '400':
          description: Invalid request or duplicate language key
        '401':
          description: Unauthorized - invalid or missing API key
  /api/v1/languages/{languageKey}:
    patch:
      operationId: updateLanguage
      summary: Update Language
      description: Modifies an existing language's key or display name.
      tags:
      - Languages
      parameters:
      - name: languageKey
        in: path
        required: true
        description: The language identifier to update
        schema:
          type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateLanguageRequest'
      responses:
        '200':
          description: Language updated successfully
        '401':
          description: Unauthorized - invalid or missing API key
        '404':
          description: Language not found
    delete:
      operationId: deleteLanguage
      summary: Delete Language
      description: Removes a language from the project. This also removes all translations for the given language.
      tags:
      - Languages
      parameters:
      - name: languageKey
        in: path
        required: true
        description: The language identifier to delete
        schema:
          type: string
      responses:
        '200':
          description: Language deleted successfully
        '401':
          description: Unauthorized - invalid or missing API key
        '404':
          description: Language not found
components:
  schemas:
    LanguageResponse:
      type: object
      properties:
        status:
          type: integer
        message:
          type: string
        data:
          $ref: '#/components/schemas/Language'
    LanguageListResponse:
      type: object
      properties:
        status:
          type: integer
        message:
          type: string
        data:
          type: array
          items:
            $ref: '#/components/schemas/Language'
    UpdateLanguageRequest:
      type: object
      properties:
        key:
          type: string
          description: New language key
        name:
          type: string
          description: New language display name
    CreateLanguageRequest:
      type: object
      required:
      - key
      properties:
        key:
          type: string
          description: Unique language key (max 20 characters)
          maxLength: 20
        name:
          type: string
          description: Language display name (max 200 characters)
          maxLength: 200
    Language:
      type: object
      properties:
        key:
          type: string
          description: Unique language identifier (max 20 chars)
        name:
          type: string
          description: Display name for the language (max 200 chars)
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-SimpleLocalize-Token
      description: Project API key from Settings > Credentials > API Key
    BearerAuth:
      type: http
      scheme: bearer
      description: Personal Token for Projects API. Generated in account settings.
externalDocs:
  description: SimpleLocalize API Documentation
  url: https://simplelocalize.io/docs/api/get-started/