> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tryhuntr.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Company Domain Discovery

> Discover likely company-controlled domains and subdomains from public evidence. Charged $0.045 only when domains are found. Results are not a legal ownership guarantee.



## OpenAPI

````yaml /openapi.json post /company-domains
openapi: 3.0.3
info:
  title: Huntr — The GTM Intelligence API
  description: >-
    Give AI agents company, people, contact, and web intelligence through one
    API. Search accounts, build targeted lists, enrich leads, find contacts, and
    uncover buying signals.


    **Authentication:** Authenticated endpoints require an `x-api-key` header
    with your Huntr API key. Get a key by signing up via `POST /keys/create`.
    Public endpoints (pricing, sign-up, health) work without a key.


    **Rate limit:** 5 requests/second per API key on authenticated endpoints.
  version: 2.0.0
servers:
  - url: https://api.tryhuntr.com
security: []
tags:
  - name: Contact APIs
    description: >-
      Search people and enrich work email, phone, and reverse-email contact
      fields.
  - name: Company APIs
    description: >-
      Search companies and retrieve company-level attributes such as detected
      technology stack and active job postings.
  - name: Research APIs
    description: >-
      Research one company, person, team, or focused business question and
      return a sales-ready answer. Lite, standard, and deep tiers.
  - name: LinkedIn APIs
    description: >-
      LinkedIn URL discovery, company and profile pages, posts, reactions, and
      comments.
  - name: X APIs
    description: X profiles, posts, search results, and thread context.
  - name: Web APIs
    description: >-
      Find, scrape, and analyze pages on a domain, plus tech stack, domain
      contacts, and job postings.
  - name: Account
    description: >-
      Sign up, verify email, recover keys, check balance, view usage, add
      credits, and read the public pricing matrix.
  - name: System
    description: Health check.
paths:
  /company-domains:
    post:
      tags:
        - Company APIs
      summary: Company Domain Discovery
      description: >-
        Discover likely company-controlled domains and subdomains from public
        evidence. Charged $0.045 only when domains are found. Results are not a
        legal ownership guarantee.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - domain
              properties:
                domain:
                  type: string
                  description: Known company domain, e.g. `stripe.com`.
              additionalProperties: false
            example:
              domain: stripe.com
      responses:
        '200':
          description: Domain discovery result.
          content:
            application/json:
              schema:
                type: object
                required:
                  - success
                  - request_id
                  - result
                  - price
                  - credits_remaining
                properties:
                  success:
                    type: boolean
                  request_id:
                    type: string
                  result:
                    type: object
                    required:
                      - domains
                      - subdomains
                      - complete
                    properties:
                      domains:
                        type: array
                        items:
                          type: object
                          required:
                            - domain
                            - confidence
                            - evidence
                          properties:
                            domain:
                              type: string
                            confidence:
                              type: string
                              enum:
                                - confirmed
                                - likely
                                - possible
                            evidence:
                              type: array
                              items:
                                type: string
                          additionalProperties: false
                      subdomains:
                        type: array
                        items:
                          type: string
                      complete:
                        type: boolean
                        example: false
                    additionalProperties: false
                  price:
                    type: number
                    example: 0.045
                  credits_remaining:
                    type: number
                additionalProperties: false
              example:
                success: true
                request_id: req_1746123456_cd1x2y
                result:
                  domains:
                    - domain: stripe.com
                      confidence: confirmed
                      evidence:
                        - known_domain
                  subdomains:
                    - docs.stripe.com
                  complete: false
                price: 0.045
                credits_remaining: 4.955
        '400':
          description: Invalid or missing domain.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Invalid API key.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '402':
          description: Insufficient credits.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Domain discovery failed.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
        - ApiKeyAuth: []
      x-codeSamples:
        - lang: Shell
          label: cURL
          source: |-
            curl --request POST \
              --url https://api.tryhuntr.com/company-domains \
              --header 'x-api-key: <api-key>' \
              --header 'Content-Type: application/json' \
              --data '{
              "domain": "stripe.com"
            }'
components:
  schemas:
    Error:
      type: object
      properties:
        error:
          type: string
          description: Human-readable error message.
      required:
        - error
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key
      description: >-
        Your Huntr API key. Get one at tryhuntr.com. Pass as x-api-key header on
        all authenticated requests.

````

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