---
title: Pay API™
slug: datacap-api-overview/pay-apitm
docTags: 
createdAt: 2026-09-01T15:34:11.869Z
---

## About Pay API™

Pay API is Datacap's payment API built around RESTful standards. These include standard HTTP methods (`POST`/`GET`/`PUT`), content types (`JSON`/`XML`/`form encoded`), and a resource-oriented architecture. It's a straightforward integration to ecommerce credit, ACH, gift and other card-not-present payments.

## URL

| **Type**      | **URL**                                |
| ------------- | -------------------------------------- |
| Certification | `https://pay-cert.dcap.com/{version}/` |
| Production    | `https://pay.dcap.com/{version}/`      |

##

## Transactions

### Credit Transactions

| **Operation**      | **HTTP Method** | **URL**                                      |
| ------------------ | --------------- | -------------------------------------------- |
| Sale               | `POST`          | /credit/sale                                 |
| Void Sale          | `POST`          | /credit/sale/{RefNo}/void               |
| Adjust             | `PUT`           | /credit/sale/{RefNo}                    |
| Return             | `POST`          | /credit/return                               |
| Void Return        | `POST`          | /credit/return/{RefNo}/void             |
| PreAuth            | `POST`          | /credit/preauth                              |
| Capture            | `PUT`           | /credit/preauth/{RefNo}                 |
| Increment          | `PUT`           | /credit/preauth/incrementalauth/{RefNo} |
| PartialReversal    | `PUT`           | /credit/preauth/partialreversal/{RefNo} |
| Void Auth          | `POST`          | /credit/preauth/{RefNo}/void            |
| Auth Only          | `POST`          | /credit/authonly                             |
| Transaction Detail | `GET`           | /credit/{RefNo}                         |
| Card Lookup        | `POST`          | /credit/cardlookup                           |



### ACH Transactions

| **Operation** | **HTTP Method** | **URL**                          |
| ------------- | --------------- | -------------------------------- |
| Authorize     | `POST`          | /ach/authorize                   |
| Return        | `POST`          | /ach/return/{RefNo}         |
| Void          | `POST`          | /ach/authorize/{RefNo}/void |
| Payout        | `POST`          | /ach/payout                      |



### FSA Transactions

| **Operation** | **HTTP Method** | **URL**                           |
| ------------- | --------------- | --------------------------------- |
| FSA Sale      | `POST`          | credit/fsa/sale                   |
| Void FSA Sale | `POST`          | credit/fsa/sale/{RefNo}/void |



### Stored Value Transactions

| **Operation**      | **HTTP Method** | **URL**                               |
| ------------------ | --------------- | ------------------------------------- |
| Sale               | `POST`          | /storedvalue/sale                     |
| Void Sale          | `POST`          | /storedvalue/sale/{RefNo}/void   |
| Return             | `POST`          | /storedvalue/return                   |
| Void Return        | `POST`          | /storedvalue/return/{RefNo}/void |
| Reload             | `POST`          | /storedvalue/reload                   |
| Void Reload        | `POST`          | /storedvalue/reload/{RefNo}/void |
| Issue              | `POST`          | /storedvalue/issue                    |
| Void Issue         | `POST`          | /storedvalue/issue/{RefNo}/void  |
| Balance            | `POST`          | /storedvalue/balance                  |
| Create             | `POST`          | /storedvalue/create                   |
| Set                | `POST`          | /storedvalue/set                      |
| Cash Out           | `POST`          | /storedvalue/cashout                  |
| Transaction Detail | `GET`           | /storedvalue/{RefNo}             |



### Administration Requests

| **Operation**        | **HTTP Method** | **URL**                    |
| -------------------- | --------------- | -------------------------- |
| AcquireInitialApiKey | `POST`          | admin/AcquireInitialApiKey |
| AcquireApiKey        | `POST`          | admin/AcquireApiKey        |
| Batch Summary        | `GET`           | /admin/batchsummary        |
| Batch Close          | `POST`          | /admin/batchclose          |

### Success Responses

- `200 OK` Approved Transaction
- `402 PAYMENT REQUIRED` Declined Transaction

### Failure Responses

- `400 BAD REQUEST` Invalid Transaction Requests
- `401 UNAUTHORIZED` Unauthorized Transaction
- `404 NOT FOUND` Resource Not Found



## eCommerce Integration

A typical eCommerce integration with Datacap consists of the following:

- Client side tokenization utilizing one or more of our tokenization frameworks.
  - An `otu` (one-time-use) token is created that is good for 15 minutes.
- Payment processing utilizing one of our gateway platforms.
  - An Auth Only transaction is sent to validate the account information represented by the one-time-use token.
  - A card token is returned with any successful transaction and is good through the expiration date of the account it represents.



## Request Full Access to Pay API

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**Get started:** Request developer credentials for free access to every product's integration guide.
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