For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
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Welcome

Start building with the Middesk API

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Start building with the Middesk API

Verify identities, prevent fraud, and assess risk with a single API. Build secure onboarding flows, compliance checks, and risk monitoring into your application.

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Middesk API interface

Quickstart

Make your first API call in 5 minutes. Set up authentication, verify an identity, and review the results.

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Core concepts

Learn about verification types, risk signals, data models, and how the API processes identity data.

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Use cases

Verify a business (KYB)

Confirm business identity, screen against sanctions and PEP lists, and run KYC on associated officers — all from a single API.

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Improve onboarding conversion

Cut drop-off with Autocomplete, Smart populate, and instant Signal risk scoring before customers see a long form.

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Monitor business activity

Track changes to registrations, addresses, officers, watchlist hits, bankruptcies, and liens with webhooks.

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Manage business entities

Register child entities for payroll taxes, manage tax registration items, and track jurisdiction status.

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