Company Search API

The Company Search API returns companies that match your ideal customer profile. Each result carries a searchResultId that you pass to the Company Research API for the full firmographic record.

Endpoint

POST /search/companies

Credits

Charged per results returned. Empty pages are free. Details

Page size

Up to 500 per page. Paginate with nextToken.

Use it for

Building a total addressable market (TAM) list for a territory or segment.
Finding companies that use, or recently adopted, specific technologies.
Timing outreach to funding rounds, expansions, leadership changes, and acquisitions.
Matching a list of company names or domains to Seamless records.

Filters

Category	Filters
Identity	`companyName`, `companyNameSearchType`, `companyDomain`, `companyKeyword`, `keywordsIsOr`
Firmographics	`companySize`, `companyRevenue`, `foundedOn`, `companyType`
Industry	`industry`, `industrySicCodes`, `industryNaicsCodes`
Location	`locations`, `locationRadius`, `companyState`, `companyCountry`, `companyZipCode`
Technology	`technologies`, `technologiesIsOr`
Signals	`newsTypes`, `newsTypeDates`, `latestFundingDates`, `latestFundingClassifications`, `latestFundingTotals`
Paging	`limit`, `nextToken`, `page`, `savedSearchId`

See the API reference for every allowed value.

Every filter as its own API

Each filter has a dedicated page with an example, a parameter reference, allowed values, and an AI agent prompt.

Identity	Firmographics	Location	Signals
Company Name	Company Size	Location	Company News
Company Domain	Company Revenue	State or Region	Funding Date
Company Keyword	Company Age	Country	Funding Stage
Saved Search	Company Type	Zip Code	Total Funding
	Industry · SIC · NAICS		Technology

Example

curl -X POST https://api.seamless.ai/api/client/v1/search/companies \
  -H "Token: $SEAMLESS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "industry": ["Computer Software"],
    "companySize": ["51 - 200", "201 - 500"],
    "technologies": ["Salesforce"],
    "newsTypes": ["Investment"],
    "newsTypeDates": ["90"],
    "limit": 50
  }'

Response (trimmed)

{
  "data": [
    {
      "searchResultId": "cmp_sr_...",
      "companyName": "Acme Corp",
      "domain": "acme.com",
      "industries": ["Computer Software"],
      "companySize": "201 - 500",
      "employeeCount": "340",
      "fundingTotal": "$24M",
      "companyRevenue": "$20M - $50M",
      "technologies": ["Salesforce", "HubSpot"],
      "latestFundingDate": "2026-08-14",
      "numContacts": "212",
      "city": "Austin",
      "state": "Texas",
      "country": "United States"
    }
  ],
  "supplementalData": { "isMore": true, "total": 812, "nextToken": "..." }
}

Want the people too? Pass the same domains to the Contact Search API with companyDomain and persona filters.

Catalog

Identity resolution

Search

Contact Search filters

Company Search filters

Research

My data

Platform

Coming soon

Company Search API

Endpoint

Credits

Page size

Use it for

Filters

Every filter as its own API

Example

Endpoint

Credits

Page size

​Use it for

​Filters

​Every filter as its own API

​Example

​Related

Use it for

Filters

Every filter as its own API

Example

Related