First Data (Fiserv)

First Data Gateway (IPG)

The First Data Gateway, marketed by Fiserv as the Internet Payment Gateway (IPG) and documented on the Fiserv developer portal as the IPGNA product. A card, ACH and wallet transaction API covering payments, orders, payment schedules, tokenization, hosted payment URLs, card and account verification, dynamic currency conversion and fraud scoring. Production is https://prod.api.firstdata.com/gateway/v2 and certification is https://cert.api.firstdata.com/gateway/v2; both base URLs are read from First Data's own published client libraries at github.com/GBSEcom, since no OpenAPI document is served at any reachable URL. API version 21.5.0. Authentication is an Api-Key header plus an HMAC-SHA256 Message-Signature.

Documentation GitHub

Documentation

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APIReference

https://developer.fiserv.com/product/IPGNA

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Authentication

https://raw.githubusercontent.com/api-evangelist/first-data/refs/heads/main/authentication/first-data-authentication.yml

Other Resources

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SourceCode

https://github.com/GBSEcom

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Conventions

https://raw.githubusercontent.com/api-evangelist/first-data/refs/heads/main/conventions/first-data-conventions.yml

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ErrorCatalog

https://raw.githubusercontent.com/api-evangelist/first-data/refs/heads/main/errors/first-data-problem-types.yml

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DeclineCodes

https://raw.githubusercontent.com/api-evangelist/first-data/refs/heads/main/errors/first-data-decline-codes.yml

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Sandbox

https://raw.githubusercontent.com/api-evangelist/first-data/refs/heads/main/sandbox/first-data-sandbox.yml

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API entry from apis.yml

aid: first-data:first-data-gateway
name: First Data Gateway (IPG)
tags:
- Payments
- Merchant Services
- Transaction Processing
- Tokenization
- Fraud
humanURL: https://developer.fiserv.com/product/IPGNA
baseURL: https://prod.api.firstdata.com/gateway/v2
properties:
- url: https://developer.fiserv.com/product/IPGNA
  type: APIReference
- url: https://github.com/GBSEcom
  type: SourceCode
- url: authentication/first-data-authentication.yml
  type: Authentication
- url: conventions/first-data-conventions.yml
  type: Conventions
- url: errors/first-data-problem-types.yml
  type: ErrorCatalog
- url: errors/first-data-decline-codes.yml
  type: DeclineCodes
- url: sandbox/first-data-sandbox.yml
  type: Sandbox
description: The First Data Gateway, marketed by Fiserv as the Internet Payment Gateway (IPG) and documented
  on the Fiserv developer portal as the IPGNA product. A card, ACH and wallet transaction API covering
  payments, orders, payment schedules, tokenization, hosted payment URLs, card and account verification,
  dynamic currency conversion and fraud scoring. Production is https://prod.api.firstdata.com/gateway/v2
  and certification is https://cert.api.firstdata.com/gateway/v2; both base URLs are read from First Data's
  own published client libraries at github.com/GBSEcom, since no OpenAPI document is served at any reachable
  URL. API version 21.5.0. Authentication is an Api-Key header plus an HMAC-SHA256 Message-Signature.