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
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Need help?

Contact us
Fiserv

Fiserv Payments API

Process payment transactions including credits, debits, and bill payments.

Documentation Provider Profile APIs.io OpenAPI GitHub

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

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

This API exposes 2 operations across 2 paths, and defines 5 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.

2 operations 2 paths 5 schemas 2 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
Contact
Fiserv Developer Support
Terms of Service
View terms
Resource Areas
1

Authentication & Security 1

Fiserv Payments 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 2

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

Payments 2

Process payment transactions including credits, debits, and bill payments.

POST
/banking/payments
Fiserv Process a payment
createPayment body → 201400401
POST
/banking/payments/{paymentId}/reverse
Fiserv Reverse a payment
reversePayment 1 param body → 200400401404

Schemas 5

The contract defines 5 schemas that model the data the API accepts and returns. The most detailed are PaymentAddRequest (6 properties), PaymentAddResponse (4 properties), PaymentReversalResponse (4 properties), ErrorResponse (3 properties). Each schema is shown below with its type and property counts.

PaymentReversalResponse
object
Response body for payment reversal.
4 properties
PaymentAddResponse
object
Response body for payment processing.
4 properties
PaymentAddRequest
object
Request body for processing a payment.
6 properties 2 required
PaymentReversalRequest
object
Request body for reversing a payment.
1 property
ErrorResponse
object
Standard error response.
3 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

fiserv-payments-api-openapi.yml Raw ↑

Other APIs Fiserv publishes across the network.

Fiserv Payment Events
AE Profile APIs.io
Fiserv 3-D Secure API
AE Profile APIs.io
Fiserv Accounts API
AE Profile APIs.io
Fiserv Authorization API
AE Profile APIs.io
Fiserv Authorizations API
AE Profile APIs.io
Fiserv BIN API
AE Profile APIs.io
Fiserv Cancels API
AE Profile APIs.io
Fiserv Capture API
AE Profile APIs.io
Fiserv Captures API
AE Profile APIs.io
Fiserv Cards API
AE Profile APIs.io
Fiserv Charges API
AE Profile APIs.io
Fiserv Funding API
AE Profile APIs.io
#Payments
← Back to F APIs
API Details
ID
fiserv:fiserv-payments-api
Server
https://cert.api.fiservapps.com
Docs
https://developer.fiserv.com/product/CommerceHub
Provider
Fiserv
APIs.io →  GitHub →
Explore more
All APIs Providers APIs.io Network
Work with this as data

Every API here is available over the API and to AI agents over MCP. APIs is not yet its own endpoint on the v1 API. Reach this content through network search and the tag graph, or the MCP server below.

Installs https://mcp.apievangelist.com/mcp in Claude, Cursor, VS Code and the rest — one button, every client.

MCP tools for apis
4 tools reach this content
  • search_api_evangelistSearch every content type across the network at once.
  • find_relatedThe shared-tag relevance graph — what else covers this.
  • get_tagEverything one tag labels, across all content types.
  • guide_topicPRO — a curated bundle for a topic: area, guidance, rules, papers, stories, services.
All tools & prompts
Call it yourself
curl for this page
Search the network for this 
curl "https://api.apievangelist.com/v1/search?q=fiserv-payments-api&limit=10"
Everything under a tag 
curl "https://api.apievangelist.com/v1/tags/fiserv-payments-api"

Discovery needs no key. Full bodies and the synthesis endpoints are Pro.

Get an API key

Free tier, no email required. Sign in with whichever identity you already have.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have. Your account

Where this information came from

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