How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Fiserv Parties API

Manage customer and party information including personal details and contact information.

Fiserv Parties API is one of 27 APIs that Fiserv publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

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

This API exposes 3 operations across 2 paths, and defines 6 schemas. It is described by OpenAPI 3.1.0, at version 1.0.0.

Requests are made against 2 base URLs: https://cert.api.fiservapps.com, https://prod.api.fiservapps.com.

3 operations 2 paths 6 schemas 1 GET1 PATCH1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.0
API Version
1.0.0
Servers
https://cert.api.fiservapps.com
https://prod.api.fiservapps.com
Authentication
HTTP Bearer
Terms of Service
Resource Areas
1

Authentication & Security 1

Fiserv Parties API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (JWT) (bearerAuth). By default, every request must be authenticated.

  • bearerAuth — OAuth 2.0 Bearer token for API authentication.

Paths & Operations 3

Across 2 paths, the API surfaces 3 operations — 1 GET, 1 PATCH, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Parties 3

Manage customer and party information including personal details and contact information.

POST
/banking/parties
Fiserv Create a customer party
addParty body → 201400401
GET
/banking/parties/{partyId}
Fiserv Retrieve party details
getParty 1 param → 200401404
PATCH
/banking/parties/{partyId}
Fiserv Update party details
updateParty 1 param body → 200400401404

Schemas 6

The contract defines 6 schemas that model the data the API accepts and returns. The most detailed are PartyAddRequest (6 properties), PartyInquiryResponse (5 properties), PartyAddResponse (3 properties), ErrorResponse (3 properties). Each schema is shown below with its type and property counts.

PartyAddRequest
object
Request body for creating a customer party.
6 properties 2 required
PartyUpdateResponse
object
Response body for party update.
3 properties
PartyInquiryResponse
object
Response body for party inquiry.
5 properties
ErrorResponse
object
Standard error response.
3 properties
PartyUpdateRequest
object
Request body for updating party details.
2 properties
PartyAddResponse
object
Response body for party creation.
3 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

fiserv-parties-api-openapi.yml Raw ↑

Other APIs Fiserv publishes across the network.

Fiserv Payment Events
Fiserv 3-D Secure API
Fiserv Accounts API
Fiserv Authorization API
Fiserv Authorizations API
Fiserv BIN API
Fiserv Cancels API
Fiserv Capture API
Fiserv Captures API
Fiserv Cards API
Fiserv Charges API
Fiserv Funding API
Where this information came from

This is an independent, third-party profile of Fiserv Parties 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.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.