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Fiserv Accounts API

Create, retrieve, update, and manage deposit and loan accounts.

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

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

This API exposes 5 operations across 4 paths, and defines 10 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.

5 operations 4 paths 10 schemas 2 GET1 PATCH2 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 Accounts 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 5

Across 4 paths, the API surfaces 5 operations — 2 GET, 1 PATCH, 2 POST. Each is listed below with its method, path, parameters, and response codes.

Accounts 5

Create, retrieve, update, and manage deposit and loan accounts.

POST
/banking/accounts
Fiserv Create a new account
addAccount body → 201400401
GET
/banking/accounts/{accountId}
Fiserv Retrieve account details
getAccount 1 param → 200401404
PATCH
/banking/accounts/{accountId}
Fiserv Update account details
updateAccount 1 param body → 200400401404
POST
/v2/accounts/account
Fiserv Create a new card account
addAccount body → 201400401
GET
/v2/accounts/{accountNumber}
Fiserv Retrieve account details
getAccount 1 param → 200401404

Schemas 10

The contract defines 10 schemas that model the data the API accepts and returns. The most detailed are AccountInquiryResponse_2 (8 properties), AccountInquiryResponse (6 properties), AccountAddRequest (6 properties), AccountAddResponse (5 properties). Each schema is shown below with its type and property counts.

ErrorResponse
object
Standard error response.
3 properties
AccountInquiryResponse
object
Response body for account inquiry.
6 properties
AccountAddResponse
object
Response body for account creation.
5 properties
ErrorResponse_2
object
Standard error response.
3 properties
AccountAddRequest_2
object
Request body for creating a card account.
3 properties 1 required
AccountUpdateRequest
object
Request body for updating account attributes.
2 properties
AccountUpdateResponse
object
Response body for account update.
3 properties
AccountAddRequest
object
Request body for creating a new account.
6 properties 2 required
AccountAddResponse_2
object
Response body for account creation.
2 properties
AccountInquiryResponse_2
object
Response body for account inquiry.
8 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

fiserv-accounts-api-openapi.yml Raw ↑

Other APIs Fiserv publishes across the network.

Fiserv Payment Events
Fiserv 3-D Secure 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
Fiserv Inquire API
Where this information came from

This is an independent, third-party profile of Fiserv Accounts 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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