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

# Company data by domain API

> Get detailed company information for a specific domain from the LinkedIn company database (25.4M records). Returns firmographic data including industry, location, employee count, and description.

## Frequently asked questions

<AccordionGroup>
  <Accordion title="Where does the company data come from?">
    Company data comes from TechnologyChecker's database of 25.4M LinkedIn company records. Each record includes firmographic details like industry, location, employee count range, founding year, company type, description, and specialties.
  </Accordion>

  <Accordion title="What if the company isn't found?">
    The API returns HTTP 404 with error code `NOT_FOUND`. Not every domain has a matching LinkedIn company record. The database covers 25.4M companies, so smaller or newer businesses might not be included yet. You're not charged credits for 404 responses.
  </Accordion>

  <Accordion title="Does this endpoint also return the company's technology stack?">
    No. This endpoint returns only company firmographic data. To get a domain's technology stack, use `GET /v1/domain/{domain}`. Combine both endpoints to build a complete company profile with tech stack data — that's 2 credits total.
  </Accordion>
</AccordionGroup>


## OpenAPI

````yaml GET /v1/company/{domain}
openapi: 3.1.0
info:
  title: TechnologyChecker API
  description: >-
    Discover technology stacks, track market trends, and enrich data with
    company intelligence.
  version: 1.0.0
  contact:
    name: TechnologyChecker Support
    email: support@technologychecker.io
    url: https://technologychecker.io
servers:
  - url: https://api.technologychecker.io
    description: Production
security:
  - bearerAuth: []
tags:
  - name: Domain technologies
    description: Look up technologies detected on any domain
  - name: Technology data
    description: Search, look up, and get details on tracked technologies
  - name: Market intelligence
    description: Technology stats, trends, and market share
  - name: Company data
    description: Firmographic and company intelligence
  - name: Live detection
    description: Real-time technology detection with browser rendering
paths:
  /v1/company/{domain}:
    get:
      tags:
        - Company data
      summary: Company data by domain API
      description: >-
        Get detailed company information for a specific domain from the LinkedIn
        company database (25.4M records).
      operationId: getCompanyByDomain
      parameters:
        - name: domain
          in: path
          required: true
          description: The domain to look up (e.g., `stripe.com`)
          schema:
            type: string
            example: stripe.com
      responses:
        '200':
          description: Company details
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    example: true
                  data:
                    $ref: '#/components/schemas/CompanyFull'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '429':
          $ref: '#/components/responses/RateLimited'
components:
  schemas:
    CompanyFull:
      allOf:
        - $ref: '#/components/schemas/Company'
        - type: object
          properties:
            description:
              type: string
              example: >-
                Stripe builds programmable financial services. Millions of
                companies—from the world's largest enterprises to the most
                ambitious startups—use Stripe to accept payments, grow their
                revenue, and accelerate new business opportunities.
            specialties:
              type: string
              nullable: true
              example: null
    Company:
      type: object
      properties:
        domain:
          type: string
          example: stripe.com
        subdomain:
          type: string
          nullable: true
        company_name:
          type: string
          example: Stripe, Inc.
        linkedin_url:
          type: string
          example: linkedin.com/company/stripe
        industry:
          type: string
          example: Technology, Information and Internet
        industry_code:
          type: integer
          example: 6
        country:
          type: string
          example: united states
        city:
          type: string
          example: south san francisco
        state:
          type: string
          example: california
        founded:
          type: integer
          example: 2010
        employees:
          type: string
          example: 1001-5000
        company_type:
          type: string
          example: Privately Held
        associated_members:
          type: integer
          example: 12741
    ApiError:
      type: object
      properties:
        success:
          type: boolean
          example: false
        error:
          type: object
          properties:
            code:
              type: string
              example: UNAUTHORIZED
            message:
              type: string
              example: Missing or invalid API key
  responses:
    Unauthorized:
      description: Missing or invalid API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    RateLimited:
      description: Rate limit exceeded
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >-
        API key in format `tapi_live_[32-char]` (live) or `tapi_test_[32-char]`
        (test)

````