# First Data Gateway (IPG)

**Canonical:** https://apis.io/apis/first-data/first-data-gateway/  
**Provider:** First Data (Fiserv) — https://apis.io/providers/first-data/  
**Base URL:** https://prod.api.firstdata.com/gateway/v2  
**Documentation:** https://developer.fiserv.com/product/IPGNA

First Data Gateway (IPG) is one of 2 APIs that [First Data (Fiserv)](https://apis.io/providers/first-data/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Payments, Merchant Services, Transaction Processing, Tokenization, and Fraud. The published artifact set on APIs.io includes an API reference and authentication docs.

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.

## Machine-readable artifacts (7)

- **APIReference** — https://developer.fiserv.com/product/IPGNA
- **SourceCode** — https://github.com/GBSEcom
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/first-data/refs/heads/main/authentication/first-data-authentication.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/first-data/refs/heads/main/conventions/first-data-conventions.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/first-data/refs/heads/main/errors/first-data-problem-types.yml
- **DeclineCodes** — https://raw.githubusercontent.com/api-evangelist/first-data/refs/heads/main/errors/first-data-decline-codes.yml
- **Sandbox** — https://raw.githubusercontent.com/api-evangelist/first-data/refs/heads/main/sandbox/first-data-sandbox.yml

## Other First Data (Fiserv) APIs (1)

- [Fiserv Developer (First Data Legacy)](https://apis.io/apis/first-data/fiserv-developer/)

## Tags

Payments, Merchant Services, Transaction Processing, Tokenization, Fraud

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/first-data/first-data-gateway/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/first-data/.