CompanyEnrich | B2B Data API — Companies, People, More

# CompanyEnrich > B2B data API for company enrichment, company search, people search, and AI-powered lookalike discovery. Access detailed, accurate company and people intelligence for over 30M companies and 170M professionals. ## The complete API suite for company and people data - [Company Enrichment API](https://companyenrich.com/product/company-enrichment-api): Enrich company data for over 30M+ companies using just a name, website, or social profile. Returns 60+ data points including firmographics, industry, employee count, revenue, NAICS codes, tech stack, funding, social profiles, and more. Real-time on-the-fly enrichment for companies not yet in the database. - [Company Search API](https://companyenrich.com/product/company-search-api): Search 30M+ companies by industry, location, size, revenue, technologies, NAICS codes, and 15+ other criteria. Supports AI-powered semantic search in plain English alongside structured filters. Includes both include and exclude filters. - [Similar Companies API](https://companyenrich.com/product/similar-companies-api): Find lookalike companies using AI-powered multi-attribute matching based on business model, context, and what companies actually do. Returns similarity scores and full enriched profiles. Use for sales prospecting, competitive analysis, TAM sizing, and market research. - [Company Headcount API](https://companyenrich.com/product/company-headcount-api): Get employee headcount data for any company by domain. Returns observed employee count, employee count range, department-level breakdown (engineering, sales, marketing, product, finance, HR, design, C-suite, legal, and more), and monthly historical snapshots going back years. Use for growth monitoring, sales intelligence, targeted prospecting, and department-level hiring trend analysis. - [People Search API](https://companyenrich.com/product/people-search-api): Search 170M+ professional profiles by name, email, company, job title, seniority, department, locati