Know Your Customer Fill In

API Description

The “Know Your Customer Fill-in” API enables applications to request selected customer identity attributes held in the end user’s Mobile Network Operator KYC records.

The API is designed to reduce friction and improve data accuracy in digital journeys where users need to provide personal information, such as account registration, onboarding, checkout, service enrollment or profile update flows.

With the appropriate authorization, consent and contractual controls, the API can return operator-held attributes such as phone number, name, address, postal code, birthdate, email address, identity document information or nationality, depending on the scopes supported by the API provider and the attributes the API consumer is allowed to receive.

Developers can use the returned information to pre-fill forms, reduce manual data entry, avoid typing errors and allow the user or application to complete a service flow with more accurate information.

The API is not a generic identity verification score, age-verification service or fraud-risk signal. For matching user-provided data against operator records, use Know Your Customer Match. For age-gated access decisions, use Know Your Customer Age Verification.

This API provides:

A KYC Fill-in function that allows an application to request selected identity attributes associated with an end user’s mobile account, based on the phone number or the subject identified through the access token.
Granular attribute retrieval controlled through dedicated scopes, allowing the API provider to determine which attributes may be returned to the API consumer.
Operator-held customer information that can be used to pre-fill digital forms and improve data accuracy in registration, onboarding, checkout and service enrollment journeys.

Use Cases

Frictionless digital Onboarding and Registration: Digital services can use KYC Fill-in to pre-fill registration forms with selected operator-held customer attributes, reducing manual data entry and improving completion rates.
One-Click Checkout and E-Commerce Form Completion: E-commerce providers can use the API to pre-fill customer information such as phone number, name, address, postal code or email address, where supported and authorized, helping users complete checkout flows faster and with fewer typing errors.
Service Enrollment and Account Creation: Service providers can use KYC Fill-in during the creation of new customer accounts to simplify the user journey and capture more accurate customer information from operator-held KYC records.
Profile Update and Customer Data Refresh: Applications can use the API to help users update or confirm selected profile details already held by the mobile operator, reducing outdated or incorrectly entered customer data.
Digital public Service Access and Citizen Form Completion: Public-sector or regulated digital services can use the API, where legally permitted, to simplify form completion using selected operator-held customer attributes, while keeping consent and data minimization controls in place.
Frictionless Identity Data Capture for Fraud Prevention Workflows: In fraud-sensitive onboarding flows, KYC Fill-in can help capture more accurate identity attributes before applying downstream checks, risk scoring or manual review.

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