Contact SalesGet Support
HomeGuidesAPI reference
HomeGuidesAPI reference
  • Get started
    • Quickstart—Verify a Business
    • Quickstart—Register an entity for payroll taxes
    • Learn how Middesk works
    • Security
    • Changelog
  • Build with Middesk
    • Get your API keys
    • Understand API changes
    • Status codes and errors reference
    • Implement webhooks
    • Secure webhooks
    • Use GraphQL
    • Connect MCP
  • Verify a business (KYB)
    • Verify TIN
    • Verify name and address
    • Verify Secretary of State status
    • Verify owners and officers
    • Screen for sanctions and watchlists
    • Search for adverse media
    • Search for Politically Exposed Persons
    • Implement KYC
    • Evaluate operational status
    • Assess credit risk
    • Accelerate onboarding
    • Monitor business activity
    • Manage business entities
Get started

Changelog

December 4, 2025
December 4, 2025

GraphQL Preview

GraphQL API now available in Technology Preview. Query business verification data with nested relationships in a single request, reducing typical workflows from 3-5 sequential calls to one declarative query. Request access or view the GraphQL API reference.

Was this page helpful?
Previous

Build with Middesk

Learn how to build an integration using the Middesk REST API.
Next
Built with
LogoLogo
Contact SalesGet Support