Forte REST API v3
Improved tokenization & webhooks

Payment APIs built for developers who ship fast.

CSG Forte’s REST API gives your team clean, predictable endpoints to accept credit/debit cards, eChecks, and ACH inside a PCI-compliant architecture that goes from first API call to production in hours, not weeks.

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Processed Annually
$ 0 B+
Active Businesses
0 K+
API Uptime SLA
0 %
Sandbox Setup Time
< 0 min

Why CSG Forte REST API?

Everything your team needs to ship payments fast

Standard HTTP protocols, JSON/XML responses, and a live sandbox so you can go from first API call to production in days.
PCI-Compliant by Design

Tokenization is built in from day one. Sensitive card data never touches your servers, Forte handles storage, encryption, and compliance at the gateway level.

Predictable REST Endpoints

Standard HTTP verbs, consistent object prefixing, and JSON/XML content negotiation. If you’ve consumed a REST API before, you can be transacting within the hour.

Full-Stack Payment Gateway

Single integration for credit/debit cards, ACH, eCheck, and scheduled transactions. Manage customers, payment methods, settlements, and merchant applications, all in one API.

Live Sandbox Environment

Test every endpoint against a full-featured sandbox before you go live. Dex portal gives you instant API credentials, test cards, and real-time transaction logs.

Dedicated Integration Support

Live phone and email support from Forte’s integration specialists. Plus self-serve documentation, knowledge base, and developer forums so help is always a click away.

Multi-Tenant Architecture

Partners can authenticate at the org level and manage sub-organizations, multiple merchant locations, and granular permissions, making Forte ideal for ISVs and platforms.

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One endpoint. Every payment type.

A single POST to /v3/transactions handles cards, ACH, eChecks, and scheduled billing. Consistent request shape, predictable JSON response, every time.
Under 200ms average response

Sandbox and production respond at the same speed, no surprises when you go live.

Basic Auth over HTTPS

Standard Base64-encoded credentials. No proprietary SDKs required to authenticate.

Postman collection included

Import our pre-built collection and start hitting endpoints in under 5 minutes.

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Get Started

From zero to live transaction in four steps

No contracts, no middleware, no sales call required. Forte’s sandbox is free and fully featured.

1

Sign up for a sandbox

Create a free test account at forte.net and get your Dex Organization ID instantly via email.

2

Generate API credentials

Inside Dex, go to Developer → API Credentials, generate your API Access ID and Secure Key.

3

Build your auth headers

Base64-encode your credentials, add the X-Forte-Auth-Organization-Id header, and you’re authenticated.

4

Make your first call

POST to the sandbox transactions endpoint. See a live approval response in under 200ms.

Security & Compliance

Enterprise-grade security baked into every call

Forte's REST API operates within a PCI DSS Level 1 certified infrastructure. Sensitive payment data is tokenized before it ever reaches your servers, and every API call is authenticated over HTTPS using Basic access authentication with RFC2045-MIME Base64 encoding.
  • PCI DSS Level 1 Certified
  • SOC 2 Type II Audited
  • HIPAA aligned (for healthcare platforms)
  • HTTPS + Basic Auth with Base64 encoding
  • Full tokenization - no raw card data on your servers
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Trusted by Developers Across Industries

"The integration with CSG Forte tools created a seamless solution. Integrating with CSG Payments quantifiably saves time and creates a better customer experience for our clients."
NP Corporations
Enterprise Technology Partner
"There aren't many companies that utilize the same vendor for more than eight years. There is a reason this has occurred with us, the API stability and reliability is simply unmatched in the market."
Lotus County
Gina Hughes, Cash Management Supervisor
"CSG Forte is the best partner in payments we've ever had. Their developer tools and REST API made it possible for us to go from integration spec to processing live transactions were made blazing fast."
Brand's Client
VP of Engineering

Ready to start building?

Sign up for a free sandbox account and make your first API call in under five minutes. No credit card required.

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Modern payment infrastructure for developers and enterprises. Accepted by businesses across government, healthcare, property management, utilities, and retail.

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