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TransUnion Authentication Service API

This API endpoint uses the following data elements ('required' elements identified) in the REQUEST to create a SIP Identity header. Based on the HTTP header of 'Content-Type' (e.g. json, text/plain), the request body (data) can include various data elements. Please refer to the examples for more details.Three different API entry points are defined for SIP Identity header creation: * Accepts requests in JSON format and produces responses in JSON format * Accepts text messages in text/plain and produces responses in JSON format * Accepts text messages in text/plain and produces responses in text/plain format

TransUnion Authentication Service API is one of 7 APIs that TransUnion publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include AuthenticationService. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

This API exposes 5 operations across 5 paths, and defines 4 schemas. It is described by OpenAPI 3.2.0, at version 1.0.0.

Requests are made against a single base URL, https://{hostname}:{port}/{optionalRoutingPath}.

5 operations 5 paths 4 schemas 5 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0.0
Base URL
https://{hostname}:{port}/{optionalRoutingPath}
Resource Areas
1

Paths & Operations 5

Across 5 paths, the API surfaces 5 operations — 5 POST. Each is listed below with its method, path, parameters, and response codes.

Authentication Service 5

This API endpoint uses the following data elements ('required' elements identified) in the REQUEST to create a SIP Identity header. Based on the HTTP header of 'Content-Type' (e.g…

POST
/authn/v2/identityj-j
Request & Response in JSON Format
authn/identityj-j 9 params body → 2004xx5xx
POST
/authn/v2/identitys-j
Text Message & Response in JSON Format
authn/identitys-j 9 params body → 2004xx5xx
POST
/authn/v2/identitys-s
Text Message & Response in Text Format
authn/identitys-s 9 params body → 2004xx5xx
POST
/authn/v2/identitymps
Multipart - Text/JSON Message & Response in Text Format
authn/identitymps 9 params body → 2004xx5xx
POST
/authn/v2/identitympj
Multipart - Text/JSON Message & Response in JSON Format
authn/identitympj 9 params body → 2004xx5xx

Schemas 4

The contract defines 4 schemas that model the data the API accepts and returns. The most detailed are Identity (25 properties), ErrorResponse500 (7 properties), ErrorResponse400 (7 properties), SuccessResponse (2 properties). Each schema is shown below with its type and property counts.

ErrorResponse400
object
7 properties 5 required
ErrorResponse500
object
7 properties 5 required
Identity
object
25 properties 2 required
SuccessResponse
object
2 properties 1 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

transunion-authentication-service-api-openapi.yml Raw ↑

Other APIs TransUnion publishes across the network.

TransUnion Global Developer Portal
TransUnion TruValidate Device Risk
TransUnion Signing API
TransUnion Verification API
TransUnion Verification Service API
TransUnion Verification Service with Call Validation Treatment (CVT) API
Where this information came from

This is an independent, third-party profile of TransUnion Authentication Service API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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