Middesk

Middesk builds business identity intelligence and KYB infrastructure—APIs and data services that verify entities, assess risk, and automate onboarding for B2B platforms, banks, and fintechs. It also offers tools for business formation, registration, and employer compliance that integrate into operations and compliance workflows. Founded in 2019 and headquartered in San Francisco, it is privately held and YC-backed, with investors including Sequoia Capital, Accel, Insight Partners, and Canapi.