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Deprecating September 2026: HTTP Signature Messaging

Test Your Setup {#restgs-test}
==============================

You can send a test API request to validate that your account, API key, HTTP headers, and HTTP message body are working as intended.  
`Cybersource` recommends that you test and verify that your payment system can securely send and receive REST API messages before transitioning to a production account.

Postman Testing {#restgs-test_postman-testing}
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You can use Postman to verify your HTTP signature message. To download a Postman collection of basic payment API requests, see the [REST API](https://documenter.getpostman.com/view/2960117/S17m1riA?version=latest "") collection on the Postman website.  
When testing an API outside of the Developer Center's API Reference sandbox, send your test API requests to the test server: `https://apitest.cybersource.com`  
For example, to test an authorization request, you can send the request to this endpoint: `https://apitest.cybersource.com``/pts/v2/payments`  
RELATED TO THIS PAGE

* [Getting Started with REST](https://developer.cybersource.com/docs/cybs/en-us/platform/developer/all/rest/rest-getting-started/restgs-intro.md)
* [Response Codes](https://developer.cybersource.com/api/reference/response-codes.md)
* [API Field Reference Guide](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/rest-api-fields-intro.md)
* [API Reference Sandbox](https://developer.cybersource.com/api-reference-assets/index.md#static-home-section)
* [Business Center Test](https://businesscentertest.cybersource.com/ebc2/)
* [Business Center Production](https://businesscenter.cybersource.com/ebc2/)
* [Customer Support](https://support.visaacceptance.com/)