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CyberSource Flex API API

The Flex API enables merchants to securely accept customer payment information captured within a server-side application using a set of APIs.These APIs protect your customer's primary account number (PAN), card verification number (CVN), and other payment information by embedding it within a transient token.This allows payment data to be stored and transported and complies with the Payment Card Industry Data Security Standard (PCI DSS) policies and procedures. These transient tokens can be validated by the receiver to ensure the data integrity and protect against data injection attacks.**Warning:** Flex API is intended for server-side applications only. Do not use the Flex API in client-side applications. To add secure payments directly into client-side code, use Unified Checkout.**How It Works**Follow these steps to capture payments using the Flex API:* Establish a payment session with a predefined customer context.* Validate the JSON Web Token.* Populate the JSON Web Token with customer information.**Customer Context**An important benefit of the Flex API is managing Personal Identifiable Information (PII). You can set up your customer context to include all PII associated with transactions, protecting this information from third parties.

CyberSource Flex API API is one of 84 APIs that CyberSource publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

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

This API exposes 1 operation across 1 path. It is described by OpenAPI 3.2.0, at version 0.0.1.

Requests are made against a single base URL, https://apitest.cybersource.com/.

1 operations 1 paths 0 schemas 1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
0.0.1
Base URL
https://api.cybersource.com
Resource Areas
1

Paths & Operations 1

Across 1 path, the API surfaces 1 operation — 1 POST. Each is listed below with its method, path, parameters, and response codes.

Flex API 1

The Flex API enables merchants to securely accept customer payment information captured within a server-side application using a set of APIs. These APIs protect your customer's pr…

POST
/flex/v2/sessions
Establish a Payment Session with a Capture Context
generateFlexAPICaptureContext body → 201400500

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

cybersource-flex-api-api-openapi.yml Raw ↑

Other APIs CyberSource publishes across the network.

CyberSource Token Management Service (TMS) API
CyberSource Decision Manager API
CyberSource Recurring Billing API
CyberSource Payouts API
CyberSource Flex Microform API
CyberSource Unified Checkout API
CyberSource Payer Authentication (3D Secure) API
CyberSource Reporting API
CyberSource Transaction Search API
CyberSource Webhooks API
CyberSource Boarding API
CyberSource Invoicing API
Where this information came from

This is an independent, third-party profile of CyberSource Flex API 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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