Search for companies on Apollo.io with powerful filtering capabilities including company size, location, industry, revenue, and more.

Overview

The Company Search endpoint allows you to find organizations on Apollo.io using a variety of filter criteria. It returns detailed company information including contact details, employee counts, revenue, industry classifications, and parent company relationships.

Method: POST URL: https://app.apollo.io/api/v1/mixed_companies/search

Inputs

Core Parameters

| Field | Type | Required | Default | Description | |-------|------|----------|---------|-------------| | page | number | No | 1 | Page number for pagination | | apollo_url | string | No | "" | Full Apollo URL with filters. When provided, overrides all other filter parameters. |

Company Name & Keywords

| Field | Type | Description | |-------|------|-------------| | qorganizationname | stringList | Organization name to search for | | organizationids | stringList | Specific Apollo company IDs to include | | qorganizationkeywordtags | stringList | Keywords associated with companies |

Location Filter

| Field | Type | Description | |-------|------|-------------| | organizationlocations | stringList | Headquarters locations to include (cities, states, countries) | | organizationnotlocations | stringList | Locations to exclude | | organizationlocationname | string | Address, City, or ZIP code for radius-based filtering | | organizationlocationradius | select | Radius in miles (25, 50, 100, or 300). Requires organizationlocation_name |

Company Size Filter

| Field | Type | Description | |-------|------|-------------| | organizationnumemployees_ranges | multiselect | Employee count ranges (10001 = 10,000+ employees) |

Industry Filter

| Field | Type | Description | |-------|------|-------------| | organizationindustrytag_ids | stringList | Industry tag IDs to filter by |

Response

The response contains a list of organizations matching the search criteria, with detailed company information.

Response Structure

{
  "organizations": [
    {
      "id": "57c4ace7a6da9867ee5599e7",
      "name": "Google",
      "website_url": "http://www.google.com",
      "primary_domain": "google.com",
      "logo_url": "https://zenprospect-production.s3.amazonaws.com/uploads/pictures/69a81237208f600001128a78/picture",
      "linkedin_url": "http://www.linkedin.com/company/google",
      "twitter_url": "http://twitter.com/Cat5BoatShoes.com",
      "facebook_url": "https://facebook.com/GoogleFiber",
      "phone": "+1 650-253-0000",
      "sanitized_phone": "+16502530000",
      "founded_year": 2010,
      "alexa_ranking": 9,
      "organization_revenue": 422498000000,
      "organization_revenue_printed": "422.5B",
      "sic_codes": ["7375", "7372", "7311"],
      "naics_codes": ["519290", "513210", "541810"],
      "languages": [],
      "num_languages": 0,
      "linkedin_uid": "1441",
      "publicly_traded_symbol": null,
      "publicly_traded_exchange": null,
      "owned_by_organization_id": "57c4a824a6da98411e7df3eb",
      "owned_by_organization": {
        "id": "57c4a824a6da98411e7df3eb",
        "name": "Alphabet Inc.",
        "website_url": "http://www.abc.xyz"
      },
      "owned_by_chain": ["57c4a824a6da98411e7df3eb"],
      "organization_headcount_six_month_growth": 0.04008478666918508,
      "organization_headcount_twelve_month_growth": 0.06986885422850667,
      "organization_headcount_twenty_four_month_growth": 0.1371829143768429,
      "show_intent": true,
      "has_intent_signal_account": false,
      "intent_strength": null
    }
  ],
  "pagination": {
    "page": 1,
    "per_page": 25,
    "total_entries": 10000,
    "total_pages": 400
  }
}

Organization Object Fields

| Field | Type | Description | |-------|------|-------------| | id | string | Unique company ID | | name | string | Company name | | websiteurl | string | Company website | | primarydomain | string | Primary domain | | logourl | string | Company logo URL | | linkedinurl | string | LinkedIn company page | | twitterurl | string | Twitter/X profile | | facebookurl | string | Facebook page | | angellisturl | string | AngelList profile | | crunchbaseurl | string | Crunchbase profile | | phone | string | Primary phone number | | sanitizedphone | string | Sanitized phone number | | foundedyear | number | Year founded | | alexaranking | number | Alexa web ranking | | linkedinuid | string | LinkedIn unique ID |

Financial & Employee Data

| Field | Type | Description | |-------|------|-------------| | organizationrevenue | number | Annual revenue in USD | | organizationrevenueprinted | string | Formatted revenue string (e.g., "422.5B") | | publiclytradedsymbol | string | Stock ticker symbol | | publiclytradedexchange | string | Stock exchange (e.g., "nyse", "nasdaq") | | organizationheadcountsixmonthgrowth | number | 6-month headcount growth rate | | organizationheadcounttwelvemonthgrowth | number | 12-month headcount growth rate | | organizationheadcounttwentyfourmonthgrowth | number | 24-month headcount growth rate |

Industry & Classification

| Field | Type | Description | |-------|------|-------------| | siccodes | array | Standard Industrial Classification codes | | naicscodes | array | North American Industry Classification codes | | languages | array | Languages spoken at company | | num_languages | number | Count of languages |

Parent Company Data

| Field | Type | Description | |-------|------|-------------| | ownedbyorganizationid | string | Parent company ID | | ownedbyorganization | object | Parent company details (id, name, websiteurl) | | ownedbychain | array | Chain of parent company IDs |

Intent Signals

| Field | Type | Description | |-------|------|-------------| | showintent | boolean | Whether intent data is available | | hasintentsignalaccount | boolean | Whether company has intent signals | | intent_strength | string | Intent signal strength |

Auth & Browser

This endpoint requires authentication. You must be signed in to Apollo.io for the API calls to succeed. The endpoint uses Apollo's session-based authentication.

Examples

Example 1: Search by Company Name

Find companies named "Microsoft":

{
  "q_organization_name": ["Microsoft"],
  "page": 1
}

Example 2: Filter by Location

Find companies in California:

{
  "organization_locations": ["california"],
  "page": 1
}

Example 3: Filter by Company Size

Find enterprise companies (10,000+ employees):

{
  "organization_num_employees_ranges": ["10001"],
  "page": 1
}

Example 4: Radius-based Search

Find companies within 50 miles of San Francisco:

{
  "organization_location_name": "San Francisco, CA",
  "organization_location_radius": "50",
  "page": 1
}

Example 5: Filter by Industry

Find companies in specific industries:

{
  "organization_industry_tag_ids": ["5567e1337369641ad2970000", "5567e36f73696431a4970000"],
  "page": 1
}

Notes

Pagination: Use the page parameter to navigate through results. Typical response includes 25 results per page.
Rate Limiting: Be mindful of Apollo's rate limits when making search requests.
Parent Companies: The ownedbyorganization field shows parent company relationships (e.g., Google → Alphabet, LinkedIn → Microsoft).
Growth Metrics: Headcount growth rates help identify fast-growing companies.
Intent Data: show_intent and related fields indicate if Apollo has detected buying signals from the company.
Revenue Data: Revenue is provided as both raw numbers and formatted strings for display purposes.
Location Filtering: Combine organizationlocationname with organizationlocationradius for precise geographic targeting.