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The merchant onboarding API processes merchant information and documentation using several distinct entities:

See the flowchart below for a visual on how these entities relate to one another (these relationships will be explained in more detail in each dedicated entity section of the documentation).

Entity Relationship

Each entity consists of numerous field inputs that are required by the merchant onboarding API.


The fields outlined in this documentation must be submitted for NomuPay to begin the merchant risk and underwriting process. Failure to provide full and complete information as outlined here will result in onboarding delays for your merchant(s). Also, depending on the nature of the merchant’s business, additional information and/or documentation may be requested following the initial review of provided merchant details.

Every entity is created through a POST request. Any update to an entity is done through a PUT request. Fetching of entity details is done through a GET request.