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Create Know Your Business (KYB) applications for your customers. Add data, upload files, and submit for review—all in one REST API.
End User Onboarding API access is enabled per account. Contact your Circle representative to get sandbox and production access before calling the API.

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Get started

End User Onboarding documentation

Learn how the onboarding flow works.

Application states

See how applications change state.

Error codes

Look up numeric code values and the partner action for each.

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Endpoint categories

Partner clients

Create and retrieve the businesses you onboard.

Partner applications

Track applications from draft to final review.

Partner documents

Upload and manage compliance documents.

Partner RFIs

Respond to compliance team requests and resubmit data.

Partner sections

Read and save sections of an application.