Middesk Business Verification
Provides automated business identity verification (KYB) by checking EIN validity, secretary of state registrations, OFAC sanctions lists, business addresses, and beneficial ownership to help lenders and fintechs onboard businesses compliantly.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
SOC2 Type II certified. GLBA compliance maintained. PII and EIN data encrypted in transit. No public key rotation tooling documented.
⚡ Reliability
Best When
Best when an agent is orchestrating SMB or commercial onboarding and must satisfy KYB, AML, and beneficial ownership compliance requirements before activating an account.
Avoid When
Avoid when verifying individuals rather than businesses, or when you only need lightweight email/phone verification with no compliance obligation.
Use Cases
- • Automate KYB during SMB merchant onboarding by submitting business details and retrieving verification status, registration documents, and risk signals in a single workflow
- • Screen businesses against OFAC and sanctions lists before extending credit or opening accounts to satisfy BSA/AML compliance requirements
- • Validate EIN and business address legitimacy as part of a lending underwriting pipeline before routing applications to human review
- • Monitor ongoing business status changes (e.g., dissolution, registration lapse) by subscribing to webhook events for portfolio risk management
- • Retrieve UBO (ultimate beneficial owner) data to fulfill FinCEN beneficial ownership rule requirements during account opening
Not For
- • Individual consumer identity verification — Middesk is purpose-built for businesses and legal entities, not natural persons
- • Real-time fraud scoring at transaction speed — business verification has inherent latency from government database lookups
- • International business verification outside the United States, where secretary of state and EIN data is not available
Interface
Authentication
API key passed as Bearer token. Separate sandbox and production environments with distinct keys. Sandbox returns deterministic test data based on EIN patterns.
Pricing
Sandbox access is free with signup. Production requires agreement and pricing negotiation. No public pricing page.
Agent Metadata
Known Gotchas
- ⚠ Verification is asynchronous — the initial POST returns a business object in 'pending' state; agents must handle webhooks or poll the GET endpoint for completion
- ⚠ Secretary of state data freshness varies by state — some states update weekly, so registered status may lag real-world changes by days
- ⚠ OFAC screening happens automatically but match adjudication may require human review, blocking automated approval flows
- ⚠ Sandbox EINs must follow specific patterns documented in the sandbox guide; arbitrary test EINs will return unexpected results
- ⚠ Beneficial ownership data requires additional input fields not needed for basic business verification, and missing UBO data will leave those checks incomplete
Alternatives
Full Evaluation Report
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Scores are editorial opinions as of 2026-03-07.