openapi: 3.0.3
info:
  title: Serper Google Search Autocomplete Scholar API
  description: RESTful API providing real-time Google Search Engine Results Page (SERP) data in structured JSON format. Supports web search, image search, news, maps, places, videos, shopping, scholar, patents, and autocomplete via POST endpoints. Authentication uses an X-API-KEY header. Designed for high-throughput AI and LLM applications with up to 300 queries per second.
  version: 1.0.0
  contact:
    name: Serper Support
    url: https://serper.dev
  termsOfService: https://serper.dev/terms-of-service
  license:
    name: Commercial
    url: https://serper.dev
servers:
- url: https://google.serper.dev
  description: Serper API server
security:
- apiKeyHeader: []
tags:
- name: Scholar
  description: Academic publication search
paths:
  /scholar:
    post:
      operationId: scholarSearch
      summary: Scholar Search
      description: Perform a Google Scholar search returning academic publication results with titles, links, publication info, snippets, years, and citation counts.
      tags:
      - Scholar
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SearchRequest'
            example:
              q: attention is all you need
              gl: us
              hl: en
      responses:
        '200':
          description: Successful scholar search response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ScholarSearchResponse'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/TooManyRequests'
components:
  schemas:
    SearchParameters:
      type: object
      properties:
        q:
          type: string
          description: The search query.
        gl:
          type: string
          description: Country code.
        hl:
          type: string
          description: Language code.
        type:
          type: string
          description: The type of search performed.
        num:
          type: integer
          description: Number of results requested.
        page:
          type: integer
          description: Page number.
    ScholarSearchResponse:
      type: object
      properties:
        searchParameters:
          $ref: '#/components/schemas/SearchParameters'
        organic:
          type: array
          description: Scholar search results.
          items:
            $ref: '#/components/schemas/ScholarResult'
    SearchRequest:
      type: object
      required:
      - q
      properties:
        q:
          type: string
          description: The search query string.
          example: google search
        gl:
          type: string
          description: Country code for geolocation of results (ISO 3166-1 alpha-2).
          example: us
          default: us
        hl:
          type: string
          description: Language code for results (ISO 639-1).
          example: en
          default: en
        num:
          type: integer
          description: Number of results to return (1-100).
          minimum: 1
          maximum: 100
          default: 10
          example: 10
        page:
          type: integer
          description: Page number for pagination.
          minimum: 1
          default: 1
          example: 1
        tbs:
          type: string
          description: Time-based search filter. Use values like 'qdr:h' (past hour), 'qdr:d' (past day), 'qdr:w' (past week), 'qdr:m' (past month), 'qdr:y' (past year).
          example: qdr:d
        autocorrect:
          type: boolean
          description: Whether to enable autocorrect for the query.
          default: true
    ErrorResponse:
      type: object
      properties:
        message:
          type: string
          description: Human-readable error description.
    ScholarResult:
      type: object
      properties:
        title:
          type: string
          description: Publication title.
        link:
          type: string
          format: uri
          description: URL to the publication.
        publicationInfo:
          type: string
          description: Authors, journal, year, and publisher information.
        snippet:
          type: string
          description: Excerpt from the publication abstract.
        year:
          type: integer
          description: Publication year.
        citedBy:
          type: integer
          description: Number of citations.
        position:
          type: integer
          description: Position in scholar results.
  responses:
    Unauthorized:
      description: Unauthorized — invalid or missing API key.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    BadRequest:
      description: Bad request — missing or invalid parameters.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    TooManyRequests:
      description: Too many requests — rate limit exceeded or credits exhausted.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  securitySchemes:
    apiKeyHeader:
      type: apiKey
      in: header
      name: X-API-KEY
      description: API key obtained from https://serper.dev/api-key