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. With Know Your Agent, Baselayer also verifies the people and businesses behind AI agents, so the sites those agents visit know who they’re dealing with. This documentation will help you understand how business verification works, which products to use, and how to integrate Baselayer into your workflows.Where to start
Get Started
Make your first API request and set up keys, environments and webhooks.
Verify Businesses & People
Verify businesses and the people behind them, screen watchlists and monitor your portfolio.
Know Your Agent
Verify people, issue credentials to their agents, and accept agents at your site.
MCP
Run Baselayer searches from Claude, ChatGPT or another AI assistant.
API Reference
Every endpoint, with its requests and responses.
Changelog
What’s new in the API and products.
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.
Know Your Agent
Verify the people behind AI agents and give agents credentials sites can check.
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.
Want your assistant to run Baselayer searches for you, not just write integration code? Connect the Baselayer MCP to Claude or ChatGPT. See the MCP Overview to get set up.
Baselayer Documentation Structure
Most Baselayer KYB products follow 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.
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 & Filing
Search liens and filings tied to businesses.
Docket Search
Identify litigation and bankruptcy history.
Consumer Solutions
Verify consumers and support compliant identity workflows.
International KYB
Registration data for businesses outside the US.
Business Pre.Fill & Auto.Complete
Let applicants pick their business instead of typing it in.
Know Your Agent
Verify people, issue credentials to their agents, and accept agents at your site.
Typical Implementation Path
Most customers implement Baselayer in phases, starting with foundational products and expanding based on risk appetite and use case requirements.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.
Need Help?
- Implementation questions: Contact your Baselayer account manager
- Technical support: See FAQs or reach out to support@baselayer.com
- API specifications: Browse the complete API Reference
- Status updates: Check the Baselayer Status Page for system health and maintenance windows