Hunter Discover API

openapi: 3.2.0
info:
  title: Hunter Account Discover API
  description: 'Returns information about your Hunter account: plan name and level, reset date for credits, team identifier, and per-meter usage counters (searches, verifications, credits).

    '
  version: v2
  contact:
    name: Hunter Support
    url: https://hunter.io/contact
servers:
- url: https://api.hunter.io/v2
  description: Production
security:
- ApiKeyQuery: []
- ApiKeyHeader: []
- BearerAuth: []
tags:
- name: Discover
  description: Company discovery and prospecting.
paths:
  /discover:
    post:
      summary: Hunter Discover Companies
      description: 'Search Hunter''s company database via natural-language `query` or structured filters (industry, headcount, location, technology, funding, keywords). Returns matching companies with email-count summaries so you can prioritize targets before running Domain Search.

        '
      operationId: discoverCompanies
      tags:
      - Discover
      parameters:
      - $ref: '#/components/parameters/ApiKeyQuery'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/DiscoverRequest'
      responses:
        '200':
          description: Companies matching the criteria.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DiscoverResponse'
        '400':
          $ref: '#/components/responses/Error'
        '429':
          $ref: '#/components/responses/Error'
components:
  parameters:
    ApiKeyQuery:
      name: api_key
      in: query
      required: true
      description: Your Hunter API key.
      schema:
        type: string
  schemas:
    DiscoverRequest:
      type: object
      properties:
        query:
          type: string
          description: Natural-language description of the target company set.
        organization:
          type: object
          properties:
            domain:
              type: array
              items:
                type: string
            name:
              type: array
              items:
                type: string
        similar_to:
          type: string
          description: Premium-only. Domain to find lookalike companies from.
        headquarters_location:
          type: object
          properties:
            include:
              type: object
              properties:
                continent:
                  type: array
                  items:
                    type: string
                country:
                  type: array
                  items:
                    type: string
                state:
                  type: array
                  items:
                    type: string
                city:
                  type: array
                  items:
                    type: string
            exclude:
              type: object
              properties:
                country:
                  type: array
                  items:
                    type: string
        industry:
          type: object
          properties:
            include:
              type: array
              items:
                type: string
            exclude:
              type: array
              items:
                type: string
        headcount:
          type: array
          items:
            type: string
            enum:
            - 1-10
            - 11-50
            - 51-200
            - 201-500
            - 501-1000
            - 1001-5000
            - 5001-10000
            - 10001+
        company_type:
          type: array
          items:
            type: string
            enum:
            - educational
            - government
            - nonprofit
            - partnership
            - privately_held
            - public_company
            - self_employed
            - self_owned
        year_founded:
          type: object
          properties:
            min:
              type: integer
            max:
              type: integer
        keywords:
          type: object
          properties:
            include:
              type: array
              items:
                type: string
            exclude:
              type: array
              items:
                type: string
            match:
              type: string
              enum:
              - any
              - all
        technology:
          type: object
          properties:
            include:
              type: array
              items:
                type: string
            exclude:
              type: array
              items:
                type: string
        funding:
          type: object
          properties:
            stage:
              type: array
              items:
                type: string
            min_amount:
              type: integer
            max_amount:
              type: integer
        limit:
          type: integer
          default: 100
          maximum: 100
        offset:
          type: integer
          default: 0
          maximum: 10000
    Error:
      type: object
      properties:
        errors:
          type: array
          items:
            type: object
            properties:
              id:
                type: string
              code:
                type: integer
              details:
                type: string
    DiscoverResponse:
      type: object
      properties:
        data:
          type: array
          items:
            type: object
            properties:
              domain:
                type: string
              organization:
                type: string
              industry:
                type: string
              headcount:
                type: string
              country:
                type: string
              emails_count:
                type: object
                properties:
                  total:
                    type: integer
                  personal:
                    type: integer
                  generic:
                    type: integer
        meta:
          type: object
          properties:
            results:
              type: integer
            filters:
              type: object
              additionalProperties: true
  responses:
    Error:
      description: Error response.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  securitySchemes:
    ApiKeyQuery:
      type: apiKey
      in: query
      name: api_key
    ApiKeyHeader:
      type: apiKey
      in: header
      name: X-API-KEY
    BearerAuth:
      type: http
      scheme: bearer