Sourcing Engineers Outside LinkedIn
Engineers are on LinkedIn; the reply doesn't have to happen there. Build a sourcing pipeline that finds engineers by role and reaches them directly.
Data Legion Enrichment Is Now on the Apify Store
Run Data Legion person and company enrichment as an Apify Actor. Paste emails, domains or LinkedIn URLs, pay only for matches, and get a ready table back.
Data Legion Is Now on Firecrawl Alexandria
Agents on Firecrawl can now enrich people and companies with Data Legion through Alexandria. The six capabilities, how to call them, and when to use them.
Building a Signup Identity Verifier
Fake signups and trial abuse are rising. Verify a B2B signup is a real person at a real company with a Person API, then route by risk. Python and JS.
Evaluating Agent Tool Calls
Most agent evals grade the final answer. The harder failure is a tool returning 200 OK with an empty field. Evaluate the data your agent got, in Python and JS.
Mining Monthly Workforce Signals
Hiring spikes, attrition, and headcount inflections are buying and investment signals. Build a monthly watchlist monitor in Python and JavaScript.
How to Code an Enrichment Waterfall
A Python and JavaScript walkthrough of waterfall enrichment: provider fall-through, field-level merge, conflict resolution, caching, and cost control.
API, SDK, MCP, CLI: Building Data Products for the Agent Era
How we built four interfaces to the same data and why AI agents work best with a CLI. Introducing datalegion-cli.
Lead Scoring with Enriched Data
Most lead scoring models fail because the data is incomplete. How to build, calibrate, and maintain a scoring model powered by enrichment.
The GTM Engineer's Guide to Data Enrichment
GTM engineers own the data layer powering sales workflows. Learn how to evaluate enrichment APIs, build waterfall enrichment, and avoid common pitfalls.
Person Search Beyond Prospecting
Person search APIs aren't just for prospecting. Five use cases across recruiting, fraud detection, market sizing, and more.
Building a Real-Time Enrichment Pipeline with a Person API
Stop exporting CSVs. Build a real-time data enrichment pipeline with a person API that enriches leads the moment they enter your system.
How to Enrich Clay Tables with Data Legion
Set up Data Legion's Person Enrich API as a Clay HTTP API integration. Step-by-step configuration for endpoint, auth, request body, and response mapping.
Reverse Email Lookup: How It Works and When to Use It
Reverse email lookup turns an email into a full professional profile. Learn how it works, common B2B use cases, and how to integrate it via API.