Blog
Engineering, product, and data insights.
API, SDK, MCP, CLI: Building a Data Product 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.
How to Choose a B2B Data Provider
A framework for evaluating B2B data providers across five dimensions that actually matter. Coverage, accuracy, freshness, compliance, and delivery.
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.