Field Name Field Value
The API request consists of four steps: MethodURLHeader and Body.

1.1 Method

Request Method: POST

1.2 URL

The API is accessed from the Request URL. This is a combination of our URL and the addition of the following text at the end of the URL: “/v1/authorization/” URL For Stage Environment: httpss:// URL For Production Environment: httpss://

1.3 Header

Fill in the appropriate header information. The API Header information is provided by the iSignthis Merchant Support team.
Field Name Field Value
From API client name
Authorization Bearer API token
Content_type application/json
Field Name Field Value
From Test_APIClient
Authorization Bearer TEXnkvZCtFucXebHYwrYLIGbkhjygvBTbxWELCCnCQJTKsx6bYNh5fOjEE
Content_type application/json

1.4 Body

In order to generate the “Transaction API call” the following API Objects are required. Each object has a number of specific attributes in order to be successful. Below you can view each object name, description and whether is required or not. Also, the glossary column has a link that directs you to detailed information about each object, including examples.
Object name Description Required Glossary
merchant Information of the merchant Yes Merchant object
transaction Information of the transaction Yes Transaction object
client Information of the client Yes Client Object
account Information of the account Yes Account object
cardholder Information of the cardholder No* Cardholder object
NOTE : *Cardholder object is only applicable if you have card numbers entered on your own payment page (Server to Server). You must be PCI certified to do this. iSignthis will need to review and approve the PCI documents in order to allow Server to Server integration.
In the API body request you need to add the “workflow name” and the“id” in the “merchant” object with the ones provided by merchant support.
Test_Workflow” text should be replaced with the  “workflow name”  provided by iSignthis Merchant support team.
“workflow”:”Test_Workflow” “Test_Merchant” text should be replaced with the “merchant_id” provided by iSignthis Merchant support team. “id”:”Test_Merchant” The API call consists of required fields to proceed with the payment: – first_name – last_name – email – mobile – billing_address_street – billing_address_street_number – billing_address_city – billing_address_postal_code – billing_address_country Please take a look at the JSON code with the title “Sample JSON body for Acquiring” provided for reference. NOTE: In the “account” object –  identifier is the customer ID that you assigned to your customer. Each “identifier” must be unique and paired with the customer for future transactions.