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Welcome to Data Legion Documentation

Data Legion provides enterprise-grade person and company data through APIs and bulk data feeds. This documentation will help you understand our data structure, quality processes, and how to get started.

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What is Data Legion?

Data Legion delivers two core datasets through APIs and monthly bulk data feeds:

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Person Data

184M+ professional profiles with 60+ data points each, covering:
  • Contact Information: Work emails, mobile phones, addresses
  • Employment History: Career progression with company details and enrichment
  • Education: Schools, degrees, and fields of study
  • Professional Data: Skills, languages
  • Location Data: Current and historical addresses with ISO codes
  • Socials: LinkedIn Profile, GitHub Profile, and other socials with strong coverage

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Company Data

40M+ company profiles with 50+ data points each, covering:
  • Core Identity: Name, domain, industry, type, size, founding year
  • Workforce Analytics: Employee counts, growth rates, tenure distributions
  • Hiring & Attrition: New hire and departure counts by time period
  • Growth Signals: Workforce growth rates across 1, 3, 6, and 12 month windows
  • Workforce Distributions: Seniority, job function, expense category breakdowns
  • Headcount History: Monthly snapshots for trend analysis

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Key Features

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APIs

Integrate our data into your apps. Enrich existing records, search our database, discover people and companies with natural language, and clean or validate inputs.

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Bulk Data Feeds

Complete datasets delivered monthly via secure transfer. No rate limits, no per-request costs. Just complete datasets ready for analytics, ML training, and batch processing.

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Complete Profiles

Every person record includes career history, company data, and contact information. Every company record includes firmographics, workforce analytics, and growth signals.

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Quality Scoring

Each data point receives a quality score (high, moderate, or low) that helps you understand data reliability. See Data Quality for details.

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Data Normalization

All text data points include both cleaned (normalized) and raw (source) variants, giving you flexibility in how you use the data.

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Monthly Refreshes

Data is refreshed monthly to capture job changes, promotions, workforce shifts, and growth signals as they happen.

Quickstart

Get up and running quickly

Person Data Overview

Learn about our person data structure

Company Data Overview

Learn about our company data structure

API Reference

Integrate our data into your applications

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Who Uses Data Legion?

  • Sales Teams: Reach prospects with reliable contact data and personalize outreach with career history
  • Marketing Teams: Power ABM campaigns with strong LinkedIn coverage and company intelligence
  • Recruiting Teams: Find qualified candidates with career progression data
  • Data Scientists: Build reliable models with person and company data across 60+ fields
  • Tech Platforms: Power AI agents and enrichment tools with data your customers can trust
  • Investment & PE: Conduct due diligence, analyze workforce composition, and track growth signals

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Need Help?