The News API Similar News API

openapi: 3.2.0
info:
  title: News All News Similar News API
  description: The News API provides access to worldwide news articles and top stories from over 40,000 sources in 50 countries. Search and filter news by keyword, category, language, country, and date. All endpoints require an API token obtained by registering at thenewsapi.com.
  version: 1.0.0
  contact:
    url: https://www.thenewsapi.com/
  termsOfService: https://www.thenewsapi.com/terms
servers:
- url: https://api.thenewsapi.com/v1
security:
- apiToken: []
tags:
- name: Similar News
  description: Articles similar to a given article.
paths:
  /news/similar/{uuid}:
    get:
      operationId: getSimilarNews
      summary: Get Similar News Articles
      description: Find articles similar to a specific article identified by its UUID. Returns articles ranked by relevance_score indicating similarity strength.
      tags:
      - Similar News
      parameters:
      - name: uuid
        in: path
        required: true
        description: UUID of the article to find similar articles for.
        schema:
          type: string
      - name: api_token
        in: query
        required: true
        description: Your API authentication token.
        schema:
          type: string
      - name: language
        in: query
        required: false
        description: Comma-separated language codes to filter by.
        schema:
          type: string
      - name: categories
        in: query
        required: false
        description: Comma-separated categories to filter by.
        schema:
          type: string
      - name: exclude_categories
        in: query
        required: false
        description: Comma-separated categories to exclude.
        schema:
          type: string
      - name: domains
        in: query
        required: false
        description: Comma-separated domains to include.
        schema:
          type: string
      - name: exclude_domains
        in: query
        required: false
        description: Comma-separated domains to exclude.
        schema:
          type: string
      - name: source_ids
        in: query
        required: false
        description: Comma-separated source IDs to include.
        schema:
          type: string
      - name: exclude_source_ids
        in: query
        required: false
        description: Comma-separated source IDs to exclude.
        schema:
          type: string
      - name: published_before
        in: query
        required: false
        description: Filter by publication date upper bound.
        schema:
          type: string
      - name: published_after
        in: query
        required: false
        description: Filter by publication date lower bound.
        schema:
          type: string
      - name: published_on
        in: query
        required: false
        description: Filter to exact publication date.
        schema:
          type: string
          format: date
      - name: limit
        in: query
        required: false
        description: Number of similar articles to return.
        schema:
          type: integer
          minimum: 1
      - name: page
        in: query
        required: false
        description: Page number for pagination.
        schema:
          type: integer
          minimum: 1
          default: 1
      responses:
        '200':
          description: List of similar articles ranked by relevance score.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/NewsListResponse'
        '404':
          $ref: '#/components/responses/NotFound'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    Article:
      type: object
      description: A news article.
      properties:
        uuid:
          type: string
          description: Unique identifier for the article.
        title:
          type: string
          description: Article headline.
        description:
          type: string
          description: Short description of the article.
        keywords:
          type: string
          description: Comma-separated keywords associated with the article.
        snippet:
          type: string
          description: Short excerpt from the article body.
        url:
          type: string
          format: uri
          description: URL to the full article.
        image_url:
          type: string
          format: uri
          description: URL to the article's featured image.
        language:
          type: string
          description: Language code of the article (e.g., en, es, fr).
        published_at:
          type: string
          format: date-time
          description: Publication datetime in UTC.
        source:
          type: string
          description: Domain of the publishing source.
        categories:
          type: array
          items:
            type: string
          description: Categories the article belongs to.
        locale:
          type: string
          description: Country/locale code (e.g., us, gb, ca).
        relevance_score:
          type:
          - number
          - 'null'
          description: Relevance score for search results or similarity matching.
    Meta:
      type: object
      description: Pagination metadata.
      properties:
        found:
          type: integer
          description: Total number of articles matching the query.
        returned:
          type: integer
          description: Number of articles returned on this page.
        limit:
          type: integer
          description: Maximum results per page.
        page:
          type: integer
          description: Current page number.
    Error:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
              description: Error code.
            message:
              type: string
              description: Human-readable error description.
    NewsListResponse:
      type: object
      properties:
        meta:
          $ref: '#/components/schemas/Meta'
        data:
          type: array
          items:
            $ref: '#/components/schemas/Article'
          description: Array of news articles.
  responses:
    NotFound:
      description: Not found - resource does not exist.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Unauthorized - invalid API token.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    apiToken:
      type: apiKey
      name: api_token
      in: query