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

# Search companies

> Async company discovery. Returns operationId; poll GET /api/operations/:id.

# POST /api/v1/companies/search

> Search for companies by firmographics, technographics, and signals. Async.

Search for companies by industry, headcount, revenue, technology, hiring signals, and more. This is an async endpoint -- returns `202 Accepted` with a poll URL.

## Example

```bash theme={null} theme={"theme":{"light":"github-light","dark":"github-dark"}}
curl -X POST https://developer.thehog.ai/api/v1/companies/search \
  -H "X-Access-Key: ak_xxxxxxxxxxxxxxxx" \
  -H "X-Secret-Key: sk_xxxxxxxxxxxxxxxx" \
  -H "Content-Type: application/json" \
  -d '{"query": "Series B SaaS companies in the US with 50-200 employees", "limit": 10}'
```


## OpenAPI

````yaml api-reference/openapi.json POST /api/v1/companies/search
openapi: 3.0.0
info:
  title: The Hog API
  description: Public API reference for The Hog.
  version: '1.0'
  contact: {}
servers:
  - url: https://developer.thehog.ai
security: []
tags: []
paths:
  /api/v1/companies/search:
    post:
      tags:
        - Company Search
      summary: Search companies
      description: >-
        Async company discovery. Returns operationId; poll GET
        /api/operations/:id.
      operationId: searchCompanies
      parameters:
        - name: Idempotency-Key
          in: header
          description: >-
            Optional. Reusing the same key for the same organization returns the
            existing queued operation.
          required: false
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PostCompanySearchDto'
      responses:
        '202':
          description: Company search accepted. Poll the returned URL for results.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EntitySearchAcceptedPublicDto'
        '400':
          description: The request body or parameters are invalid.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublicErrorResponseDto'
              example:
                statusCode: 400
                error: Bad Request
                message: Validation failed
                path: /api/v1/search
                timestamp: '2026-05-21T09:08:10.000Z'
                requestId: 506af9b3-01a9-43be-9eb4-8458fe3e4f5b
                errors:
                  - property: body.query
                    message: query must be a string
                    constraints:
                      isString: query must be a string
        '401':
          description: Authentication is required.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublicErrorResponseDto'
              example:
                statusCode: 401
                error: Unauthorized
                message: Authentication is required.
                path: /api/v1/search
                timestamp: '2026-05-21T09:08:10.000Z'
                requestId: 506af9b3-01a9-43be-9eb4-8458fe3e4f5b
        '402':
          description: The organization does not have enough credits for this request.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublicErrorResponseDto'
              example:
                statusCode: 402
                error: Payment Required
                message: Insufficient credits.
                path: /api/v1/search
                timestamp: '2026-05-21T09:08:10.000Z'
                requestId: 506af9b3-01a9-43be-9eb4-8458fe3e4f5b
        '500':
          description: An unexpected error occurred.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublicErrorResponseDto'
              example:
                statusCode: 500
                error: Internal Server Error
                message: An unexpected error occurred.
                path: /api/v1/search
                timestamp: '2026-05-21T09:08:10.000Z'
                requestId: 506af9b3-01a9-43be-9eb4-8458fe3e4f5b
      security:
        - AccessKey: []
          SecretKey: []
components:
  schemas:
    PostCompanySearchDto:
      type: object
      properties:
        query:
          type: string
          example: B2B SaaS companies in Austin hiring engineers
          maxLength: 500
        limit:
          type: number
          default: 25
          minimum: 1
          maximum: 100
        includeSignals:
          type: boolean
          default: false
        filters:
          $ref: '#/components/schemas/EntitySearchFiltersDto'
        confirm:
          type: boolean
      required:
        - query
    EntitySearchAcceptedPublicDto:
      type: object
      properties:
        id:
          type: string
        operationId:
          type: string
        status:
          type: string
          enum:
            - queued
        pollUrl:
          type: string
      required:
        - id
        - operationId
        - status
        - pollUrl
    PublicErrorResponseDto:
      type: object
      properties:
        statusCode:
          type: number
          example: 400
        error:
          type: string
          example: Bad Request
        message:
          type: string
          example: Validation failed
        path:
          type: string
          example: /api/v1/search
        requestId:
          type: string
          example: 506af9b3-01a9-43be-9eb4-8458fe3e4f5b
        timestamp:
          type: string
          example: '2026-05-21T09:08:10.000Z'
        errors:
          type: array
          items:
            $ref: '#/components/schemas/PublicValidationErrorItemDto'
      required:
        - statusCode
        - error
        - message
        - path
        - timestamp
    EntitySearchFiltersDto:
      type: object
      properties:
        titles:
          type: array
          items:
            type: string
        titleMatch:
          type: string
          enum:
            - exact
            - similar
        locations:
          type: array
          items:
            type: string
        industries:
          type: array
          items:
            type: string
        employeeCount:
          $ref: '#/components/schemas/EntityEmployeeCountFilterDto'
        signals:
          type: array
          items:
            type: string
        company:
          $ref: '#/components/schemas/EntityCompanyNestedFilterDto'
    PublicValidationErrorItemDto:
      type: object
      properties:
        property:
          type: string
          example: body.query
        message:
          type: string
          example: query must be a string
        constraints:
          type: object
          additionalProperties:
            type: string
          example:
            isString: query must be a string
      required:
        - property
        - message
    EntityEmployeeCountFilterDto:
      type: object
      properties:
        min:
          type: number
          minimum: 0
        max:
          type: number
          minimum: 0
    EntityCompanyNestedFilterDto:
      type: object
      properties:
        names:
          type: array
          items:
            type: string
        domains:
          type: array
          items:
            type: string
        linkedinUrls:
          type: array
          items:
            type: string
        industries:
          type: array
          items:
            type: string
        employeeCount:
          $ref: '#/components/schemas/EntityEmployeeCountFilterDto'
        signals:
          type: array
          items:
            type: string
  securitySchemes:
    AccessKey:
      type: apiKey
      in: header
      name: X-Access-Key
      description: The public API key from the Credentials page.
    SecretKey:
      type: apiKey
      in: header
      name: X-Secret-Key
      description: The API secret shown when the credential is created.

````