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What is Baselayer

Baselayer helps financial institutions, fintechs, and marketplaces verify business identity and assess risk through real-time data and simple APIs. Whether you’re onboarding merchants, underwriting loans, or monitoring existing customers, Baselayer provides the structured, authoritative data you need to make confident decisions. This documentation will help you understand how business verification works, which products to use, and how to integrate Baselayer into your workflows.

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First Steps

Business Verification

5 min · Understanding the basics of the challenge we are solving.

Authentication

How to use your API keys correctly.

Getting Started

3 min · How to make your first Baselayer API request.

API Versioning

Build for forward compatibility with our API.

Sandbox vs. Production

Leverage our sandbox environment during implementation.

Baselayer with LLMs

Leverage Claude or ChatGPT to set up quickly your integration.

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Baselayer Documentation Structure

Every Baselayer product follows the same core structure in this documentation. At a minimum, each product’s documentation includes these pages:
  • Basics: what the product does, key concepts, terminology, and when to use it.
  • API Quickstart: the fastest path to a successful first request (auth + a simple example).
  • Best Practices: guidance on real-world usage - recommended workflows, edge cases, rate limits, and common pitfalls.
Some products may include additional pages when needed to explain product-specific behavior or advanced concepts. For example, Business Search includes a dedicated page for Scores & Ratings to clarify how scoring works and how to interpret results.

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Baselayer Products

Business Search

Foundation for all workflows - registration, TIN, sanctions, officers, risk scores.

Online Presence

Website discovery, industry prediction, digital legitimacy assessment.

Portfolio Monitoring

Continuous monitoring for status changes, new liens, bankruptcies, sanctions.

Lien Search

Search liens and filings tied to businesses.

Docket Search

Identify litigation and bankruptcy history.

Consumer Solutions

Verify consumers and support compliant identity workflows.

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Typical Implementation Path

Most customers implement Baselayer in phases, starting with foundational products and expanding based on risk appetite and use case requirements.

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Use Cases

Baselayer supports diverse workflows across financial services and marketplaces:

Bank Account Opening

Streamlined onboarding with faster verification and fewer false declines.

Payment Processors

Underwrite merchants quickly and monitor risk as they scale.

Marketplaces

Vet sellers at signup and continuously monitor for new risk.

Business Lending

Complete workflow to verify identity, credit and fraud risk.

Factoring & Equipment Financing

Rapid credit decisions and collateral review.

Sole Prop Verification

Verify individuals behind small businesses and reduce fraud exposure.

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Need Help?

Ready to start? Head to Authentication to set up your API keys.