openapi: 3.0.3
info:
  title: LanguageTool HTTP Check Words API
  description: LanguageTool checks texts for style and grammar issues. The HTTP API provides programmatic access to grammar checking, language detection, and personal dictionary management.
  version: '1.0'
  contact:
    name: LanguageTool
    url: https://languagetool.org/http-api/
  license:
    name: LGPL-2.1
    url: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
servers:
- url: https://api.languagetool.org/v2
  description: Public LanguageTool API
- url: https://api.languagetoolplus.com/v2
  description: LanguageTool Plus (Premium) API
tags:
- name: Words
paths:
  /words:
    get:
      summary: List personal dictionary words
      description: Lists words stored in the user's personal dictionaries.
      operationId: listWords
      parameters:
      - name: username
        in: query
        required: true
        schema:
          type: string
      - name: apiKey
        in: query
        required: true
        schema:
          type: string
      - name: dicts
        in: query
        schema:
          type: string
        description: Comma-separated list of dictionary names.
      - name: offset
        in: query
        schema:
          type: integer
          default: 0
      - name: limit
        in: query
        schema:
          type: integer
          default: 10
      responses:
        '200':
          description: List of personal dictionary words.
          content:
            application/json:
              schema:
                type: object
                properties:
                  words:
                    type: array
                    items:
                      type: string
      tags:
      - Words
  /words/add:
    post:
      summary: Add a word to a personal dictionary
      description: Adds a single word to a user's personal dictionary. The word must not be a phrase and cannot contain whitespace.
      operationId: addWord
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              required:
              - word
              - username
              - apiKey
              properties:
                word:
                  type: string
                  description: The word to add.
                username:
                  type: string
                apiKey:
                  type: string
                dict:
                  type: string
                  description: Optional dictionary name.
      responses:
        '200':
          description: Word added.
          content:
            application/json:
              schema:
                type: object
                properties:
                  added:
                    type: boolean
      tags:
      - Words
  /words/delete:
    post:
      summary: Delete a word from a personal dictionary
      operationId: deleteWord
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              required:
              - word
              - username
              - apiKey
              properties:
                word:
                  type: string
                username:
                  type: string
                apiKey:
                  type: string
                dict:
                  type: string
      responses:
        '200':
          description: Word deleted.
          content:
            application/json:
              schema:
                type: object
                properties:
                  deleted:
                    type: boolean
      tags:
      - Words