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Getting Started

Use this guide to integrate Microform Integration into your payment acceptance web page or mobile application. Microform Integration replaces the primary account number (PAN) or card verification number (CVN) field, or both, in your payment input form.

Follow these steps to add Microform Integration to your integration:

Create the server-side capture context

Generate a capture context request that contains limited-use public keys from the Flex API v2 suite. This server-side component authenticates your merchant credentials and defines the payment options available to the client-side library.

Set up the client-side integration

Integrate the Flex Microform v2 JavaScript library into your payment acceptance web page or mobile application. The library renders secure iframes for the fields it replaces:

  • Card information input fields: payment card or PAN, CVN

  • eCheck information input fields: routing number, account number

  • For card information, see Client-Side Setup.

  • For eCheck information, see Client-Side Setup.

Receive and use the transient token

When the customer submits the form, Microform Integration returns a transient token that references the tokenized payment data. Validate the token, then use it in place of the sensitive payment information in your downstream payment request.

Last published: September 29, 2026