Introduction

The Sezzle API v2 is intended for merchants interested in accepting Sezzle as a payment option while using the latest features offered by our v2 API.

In addition to supporting individually authorized transactions for a single purchase of goods or services, the v2 API also supports tokenization of a customer for future transactions.

Integration Flow

Order payment flow

order flow

Merchant calls /v2/session with order and intent of AUTH or CAPTURE. Optionally, the merchant can send customer information.
Sezzle returns order uuid and checkout URL.
Merchant redirects customer to Sezzle checkout URL.
Customer completes the Sezzle checkout and is redirected to the session complete URL.
- If the intent was to CAPTURE, Sezzle will capture the total order amount.
- If the intent was to AUTH, Sezzle will only authorize the total order amount and the merchant can call /v2/order later to release or capture amounts using the order uuid.

Customer tokenization

customer tokenization

Merchant calls /v2/session with customer tokenize of true. Optionally, the merchant can send customer information.
Sezzle returns the tokenize session token and approval URL.
Merchant redirects customer to Sezzle approval URL.
Customer can agree (or disagree) to allow future Sezzle transactions by the merchant and is redirected to the session complete URL. If the customer agrees to be tokenized, Sezzle will add a query parameter to the complete URL named customer-uuid, allowing the merchant to get the uuid of the customer.
- Alternatively, the merchant can call /v2/token with this tokenize session token to get the uuid of the customer.
Merchant can subsequently charge the customer by calling /v2/customer to create an order using the customer-uuid.
- If successful, merchant can call /v2/order to release, capture, or refund the order.

The merchant has the option to create an order payment and tokenize the customer in a single session. In this instance, the merchant should redirect the customer to the Sezzle checkout URL. During checkout, the customer can agree to allow future Sezzle transactions by the merchant. Again, if the customer agrees to be tokenized, Sezzle will add a query parameter to the complete URL named customer-uuid. Note: Sezzle still returns an approval URL on create session. If the customer does not agree to be tokenized during checkout, the merchant can use the approval URL at a later time.

Authentication

Obtain Authentication Token

To authorize, use the following format:

Request Body

{
    "public_key": "myPublicKey",
    "private_key": "myPrivateKey"
}

Make sure to replace keys with your API keys from your Merchant Dashboard.

Response Body

{
    "token": "authToken",
    "expiration_date": "2017-01-01T01:30:25.388940303Z",
    "merchant_uuid": "merchant1234567890"
}

POST https://gateway.sezzle.com/v2/authentication

Sezzle uses scoped API keys to allow access to the API. You can find/generate these keys on your merchant dashboard once you have been approved by Sezzle.

Once you have a valid token, it must be used as a Header for subsequent requests to our API, using the format below.

Authorization: Bearer authToken

Sessions

A session represents an order, a tokenization of a customer, or both. Use the session endpoints to post a new session or get the details of an existing session.

Create a session

Request Body

{
  "cancel_url": {
    "href": "https://sezzle.com/cart",
    "method": "GET"
  },
  "complete_url": {
    "href": "https://sezzle.com/complete",
    "method": "GET"
  },
  "customer": {
    "tokenize": true,
    "email": "john.doe@sezzle.com",
    "first_name": "John",
    "last_name": "Doe",
    "phone": "5555045294",
    "dob": "1990-02-25",
    "billing_address": {
      "name": "John Doe",
      "street": "123 W Lake St",
      "street2": "Unit 104",
      "city": "Minneapolis",
      "state": "MN",
      "postal_code": "55408",
      "country_code": "US",
      "phone_number": "5555045294"
    },
    "shipping_address": {
      "name": "John Doe",
      "street": "123 W Lake St",
      "street2": "Unit 104",
      "city": "Minneapolis",
      "state": "MN",
      "postal_code": "55408",
      "country_code": "US",
      "phone_number": "5555045294"
    }
  },
  "order": {
    "intent": "CAPTURE",
    "reference_id": "ord_12345",
    "description": "sezzle-store - #12749253509255",
    "requires_shipping_info": true,
    "items": [
        {
          "name": "widget",
          "sku": "sku123456",
          "quantity": 1,
          "price": {
              "amount_in_cents": 1000,
              "currency": "USD"
          }
        }
    ],
     "discounts": [
        {
          "name": "20% off",
          "amount": {
              "amount_in_cents": 1000,
              "currency": "USD"
          }
        }
    ],
    "metadata": {
      "location_id": "123",
      "store_name": "Downtown Minneapolis",
      "store_manager": "Jane Doe"
    },
     "shipping_amount": {
        "amount_in_cents": 1000,
        "currency": "USD"
    },
   "tax_amount": {
        "amount_in_cents": 1000,
        "currency": "USD"
    },
    "checkout_expiration": "2020-04-23T16:13:44Z",
    "order_amount": {
      "amount_in_cents": 10000,
      "currency": "USD"
    }
  }
}

Response Body

{
  "uuid": "fadbc642-05a4-4e38-9e74-80e325623af9",
  "links": [
    {
      "href": "https://gateway.sezzle.com/v2/session/fadbc642-05a4-4e38-9e74-80e325623af9",
      "method": "GET",
      "rel": "self"
    }
  ],
  "order": {
    "uuid": "12a34bc5-6de7-890f-g123-4hi1238jk902",
    "checkout_url": "https://checkout.sezzle.com/?id=12a34bc5-6de7-890f-g123-4hi1238jk902",
    "intent": "CAPTURE",
    "links": [
      {
        "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902",
        "method": "GET",
        "rel": "self"
      },
      {
        "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902",
        "method": "PATCH",
        "rel": "self"
      },
      {
        "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902/release",
        "method": "POST",
        "rel": "release"
      },
      {
        "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902/capture",
        "method": "POST",
        "rel": "capture"
      },
      {
        "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902/refund",
        "method": "POST",
        "rel": "refund"
      }
    ]
  },
  "tokenize": {
    "token": "7ec98824-67cc-469c-86ab-f9e047f9cf1a",
    "expiration": "2020-04-27T14:46:59Z",
    "approval_url": "https://dashboard.sezzle.com/customer/checkout-approval?merchant-request-id=3f3244fd-78ce-4994-af0c-b8c760d47794",
    "links": [
      {
        "href": "https://gateway.sezzle.com/v2/token/7ec98824-67cc-469c-86ab-f9e047f9cf1a/session",
        "method": "GET",
        "rel": "token"
      }
    ]
  }
}

POST https://gateway.sezzle.com/v2/session

This endpoint creates a session in our system, and it returns the URL that you should redirect the user to. You can use a session to create an order, tokenize a customer, or both.

We suggest you provide as much optional information about the user as you have available, since this will speed up our checkout process and increase conversion.

If you submit an order with a session, then Sezzle is able to handle the entire checkout process after an order has been provided. However, if your flow requires that the user confirm their checkout on your site after being approved by Sezzle, you may set the intent parameter to AUTH with the session request. In this flow, Sezzle will not complete the transaction unless you make a capture request. Capture requests can be made to capture all or part of the original order amount.

If you tokenize a customer, then the customer will have the option to agree to allow you to process future transactions on their behalf. This gives you the ability to preapprove, authorize, and capture future transactions on behalf of the customer.

Session Object

Parameter	Type	Description
cancel_url*	object	The HTTP request information used to redirect the customer in the case of a cancellation
complete_url*	object	The HTTP request infromation used to redirect the customer upon completion of the session
customer	object	The customer for this session
order	object	The order for this session

URL Object

This is used for both the cancel and complete URL objects

Parameter	Type	Description
href*	string	The URL used when redirecting a customer
method*	string	The HTTP request method used when redirecting a customer. Currently only the GET method is supported.

Customer object

Parameter	Type	Description
tokenize	boolean	Determines whether or not this customer will be tokenized
email	string	The customer’s email address
first_name	string	The customer’s first name
last_name	string	The customer’s last name
phone	string	The customer’s phone number
dob	string	The customer’s date of birth in YYYY-MM-DD format
billing_address	object	The customer’s billing address
shipping_address	object	The customer’s shipping address

Address Object

This is used for both billing and shipping

Parameter	Type	Description
name	string	The name on the address
street*	string	The street and number of the address
street2	string	The apt or unit
city*	string	The city
state*	string	The 2 character state code
postal_code*	string	The postal delivery code
country_code*	string	The 2 character country code
phone_number	string	The phone number at the delivery location

Order object

Parameter	Type	Description
intent*	string	Accepted values are “AUTH” or “CAPTURE”. If your checkout flow requires the user to confirm their checkout on your site after being approved by Sezzle, use “AUTH” as your intent. If you prefer the checkout be captured immediately, use “CAPTURE”.
reference_id*	string	Your reference ID for this order
description*	string	Your description for this order
order_amount*	object	The amount of the order. Must be at least `100`
requires_shipping_info	boolean	Optional flag to indicate if you would like us to collect shipping information for this checkout from the customer
items	object	The items being purchased
discounts	object	The discounts applied to this order. Must be included in total
metadata	object	Optional object for any custom data you want to submit with the checkout
shipping_amount	object	The shipping fees applied to this order. Must be included in the total
tax_amount	object	The taxes appied to this order. Must be included in the total
checkout_expiration	string	The expiration for the order checkout. Must be in yyyy-mm-dd format

Item Object

Parameter	Type	Description
name*	string	The name of the item
sku*	string	The sku identifier
quantity*	int	The quantity purchased
price*	object	The price object

Discount Object

Parameter	Type	Description
name*	string	The description of the discount
amount*	object	A price object

Metadata Object

Use the metadata object for any additional information you would like to attach to the checkout. All values must be strings.

Parameter	Type	Description
some_field_name*	string	Custom metadata field
some_other_field_name*	string	Custom metadata field

Shipping Amount Object

A price object

Tax Amount Object

A price object

Price Object

The price object is used for items, discounts, shiping amount, tax amount, and order amount.

Parameter	Type	Description
amount_in_cents*	int	The amount of the item in cents
currency*	string	The 3 character currency code as defined by ISO 4217

Get a session

GET https://gateway.sezzle.com/v2/session/{session_uuid}

You can retrieve the details of an existing session using this endpoint.

Response Body

{
  "uuid": "fadbc642-05a4-4e38-9e74-80e325623af9",
  "links": [
    {
      "href": "https://gateway.sezzle.com/v2/session/fadbc642-05a4-4e38-9e74-80e325623af9",
      "method": "GET",
      "rel": "self"
    }
  ],
  "order": {
    "uuid": "12a34bc5-6de7-890f-g123-4hi1238jk902",
    "intent": "CAPTURE",
    "checkout_url": "https://checkout.sezzle.com/?id=12a34bc5-6de7-890f-g123-4hi1238jk902",
    "links": [
      {
        "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902",
        "method": "GET",
        "rel": "self"
      },
      {
        "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902",
        "method": "PATCH",
        "rel": "self"
      },
      {
        "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902/release",
        "method": "POST",
        "rel": "release"
      },
      {
        "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902/capture",
        "method": "POST",
        "rel": "capture"
      },
      {
        "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902/refund",
        "method": "POST",
        "rel": "refund"
      }
    ]
  },
  "tokenize": {
    "token": "7ec98824-67cc-469c-86ab-f9e047f9cf1a",
    "expiration": "2020-04-27T14:46:59Z",
    "approval_url": "https://dashboard.sezzle.com/customer/checkout-approval?merchant-request-id=3f3244fd-78ce-4994-af0c-b8c760d47794",
    "links": [
      {
        "href": "https://gateway.sezzle.com/v2/token/7ec98824-67cc-469c-86ab-f9e047f9cf1a/session ",
        "method": "GET",
        "rel": "token"
      }
    ]
  }
}

Orders

Use the orders endpoints to get order details, update an order, release an amount by order, capture an amount by order, or refund an amount by order.

Get an order

GET https://gateway.sezzle.com/v2/order/{order_uuid}

Use this endpoint to get details on an existing order

Response Body

{
  "uuid": "12a34bc5-6de7-890f-g123-4hi1238jk902",
  "links": [
    {
      "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902",
      "method": "GET",
      "rel": "self"
    },
    {
      "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902",
      "method": "PATCH",
      "rel": "self"
    },
    {
      "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902/release",
      "method": "POST",
      "rel": "release"
    },
    {
      "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902/capture",
      "method": "POST",
      "rel": "capture"
    },
    {
      "href": "https://gateway.sezzle.com/v2/order/12a34bc5-6de7-890f-g123-4hi1238jk902/refund",
      "method": "POST",
      "rel": "refund"
    }
  ],
  "intent": "AUTH",
  "expiration": "2020-04-23T16:13:44Z",
  "reference_id": "ord_12345",
  "description": "sezzle-store - #12749253509255",
  "metadata": {
    "location_id": "123",
    "store_name": "Downtown Minneapolis",
    "store_manager": "Jane Doe"
  },
  "order_amount": {
    "amount_in_cents": 10000,
    "currency": "USD"
  },
  "customer": {
    "email": "john.doe@sezzle.com",
    "first_name": "John",
    "last_name": "Doe",
    "phone": "5555045294",
    "dob": "1990-02-25",
    "billing_address": {
      "name": "John Doe",
      "street": "123 W Lake St",
      "street2": "Unit 104",
      "city": "Minneapolis",
      "state": "MN",
      "postal_code": "55408",
      "country_code": "US",
      "phone_number": "5555045294"
    },
    "shipping_address": {
      "name": "John Doe",
      "street": "123 W Lake St",
      "street2": "Unit 104",
      "city": "Minneapolis",
      "state": "MN",
      "postal_code": "55408",
      "country_code": "US",
      "phone_number": "5555045294"
    }
  },
  "authorization": {
    "authorization_amount": {
      "amount_in_cents": 10000,
      "currency": "USD"
    },
    "approved": true,
    "expiration":"2020-04-23T16:13:44Z" ,
    "releases": [
      {
        "uuid": "4b4d217c-18f1-4bfb-996e-767470c04661",
        "amount": {
          "amount_in_cents": 3000,
          "currency": "USD"
        }
      }
    ],
    "captures": [
      {
        "uuid": "f4415e94-e562-47cc-94f3-92279f27dc20",
        "amount": {
          "amount_in_cents": 7000,
          "currency": "USD"
        }
      }
    ],
    "refunds": [
      {
        "uuid": "83162d2f-d5f1-43ad-91ed-e8231920ce6d",
        "amount": {
          "amount_in_cents": 1000,
          "currency": "USD"
        }
      }
    ]
  } 
}

Update an order

PATCH https://gateway.sezzle.com/v2/order/{order_uuid}

User this endpoint to update an existing order. At this point only the reference ID can be updated.

Request Body

{
  "reference_id": "ord_9876"
}

Update Order Object

Parameter	Type	Description
reference_id*	string	Your reference ID for this order

There is no response body for this request on a success, we return an HTTP 204 Status No Content.

Release amount by order

POST https://gateway.sezzle.com/v2/order/{order_uuid}/release

Use this endpoint to release an amount by order.

Request Body

{
  "amount_in_cents": 5000,
  "currency": "USD"
}

Release Order Object

A price Object

Price Object

Parameter	Type	Description
amount_in_cents*	number	The amount you would like to release on this order, in cents
currency*	string	The 3 character currency code as defined by ISO 4217

Response Body

{
  "uuid": "6c9db5d4-d09a-4224-860a-b5438ac32ca8"
}

Capture amount by order

POST https://gateway.sezzle.com/v2/order/{order_uuid}/capture

Use this endpoint to capture an amount by order.

Request Body

{
  "capture_amount": {
    "amount_in_cents": 5000,
    "currency": "USD"
  },
  "partial_capture": true
}

Capture Amount By Order Object

Parameter	Type	Description
capture_amount*	object	Details the amount and currency being captured
partial_capture*	boolean	Determines whether or not this capture is a partial capture. If false, then the amount should be the full order amount

Capture Amount Object

A price object

Price Object

Parameter	Type	Description
amount_in_cents*	string	The amount to be captured, in cents
currency*	string	The 3 character currency code as defined by ISO 4217

Response Body

{
  "uuid": "6c9db5d4-d09a-4224-860a-b5438ac32ca8"
}

Refund amount by order

POST https://gateway.sezzle.com/v2/order/{order_uuid}/refund

Use this endpoint to refund an amount by order

Request Body

{
  "amount_in_cents": 5000,
  "currency": "USD"
}

Refund Amount Object

A price object

Price Object

Parameter	Type	Description
amount_in_cents*	string	The amount in cents to be refunded, in cents
currency*	string	The 3 character currency code as defined by ISO 4217

Response Body

{
  "uuid": "6c9db5d4-d09a-4224-860a-b5438ac32ca8"
}

Customers

Use the customers endpoints to get a list of customers, get details on an existing customer, delete a customer, preapprove an amount for the customer, or create an order for a customer.

Get a list of customers

GET https://gateway.sezzle.com/v2/customer

You can retrieve a list of existing customers using this endpoint.

Response Body

[
  {
    "uuid": "a9d8e15c-5e4a-4201-aa8f-7540f934a9a2",
    "expiration":  "2020-04-28T17:58:11Z",
    "links": [
      {
        "href": "https://gateway.sezzle.com/v2/customer/a9d8e15c-5e4a-4201-aa8f-7540f934a9a2",
        "method": "GET",
        "rel": "self" 
      },
      {
        "href": "https://gateway.sezzle.com/v2/customer/a9d8e15c-5e4a-4201-aa8f-7540f934a9a2",
        "method": "DELETE",
        "rel": "self" 
      },
      {
        "href": "https://gateway.sezzle.com/v2/customer/a9d8e15c-5e4a-4201-aa8f-7540f934a9a2/preapprove",
        "method": "POST",
        "rel": "preapprove" 
      },
      {
        "href": "https://gateway.sezzle.com/v2/customer/a9d8e15c-5e4a-4201-aa8f-7540f934a9a2/order",
        "method": "POST",
        "rel": "order" 
      },
    ]
  }
]

Get a customer

GET https://gateway.sezzle.com/v2/customer/{customer_uuid}

You can use this endpoint to get details on an existing customer

Response Body

{ 
  "uuid": "a9d8e15c-5e4a-4201-aa8f-7540f934a9a2",
  "links": [
    {
      "href": "https://gateway.sezzle.com/v2/customer/a9d8e15c-5e4a-4201-aa8f-7540f934a9a2",
      "method": "GET",
      "rel": "self" 
    },
    {
      "href": "https://gateway.sezzle.com/v2/customer/a9d8e15c-5e4a-4201-aa8f-7540f934a9a2",
      "method": "DELETE",
      "rel": "self" 
    },
    {
      "href": "https://gateway.sezzle.com/v2/customer/a9d8e15c-5e4a-4201-aa8f-7540f934a9a2/preapprove",
      "method": "POST",
      "rel": "preapprove" 
    },
    {
      "href": "https://gateway.sezzle.com/v2/customer/a9d8e15c-5e4a-4201-aa8f-7540f934a9a2/order",
      "method": "POST",
      "rel": "order" 
    },
  ],
  "email": "john.doe@sezzle.com",
  "first_name": "John",
  "last_name": "Doe",
  "phone": "5555045294",
  "dob": "1990-02-25",
  "billing_address": {
    "name": "John Doe",
    "street": "123 W Lake St",
    "street2": "Unit 104",
    "city": "Minneapolis",
    "state": "MN",
    "postal_code": "55408",
    "country_code": "US",
    "phone_number": "5555045294"
  }
}

Delete a customer

DELETE https://gateway.sezzle.com/v2/customer/{customer_uuid}

You can use this endpoint to delete an existing customer

There is no response body for this request on a success, we return an HTTP 204 Status No Content.

Preapprove amount by customer

POST https://gateway.sezzle.com/v2/customer/{customer_uuid}/preapprove

You can use this endpoint to preapprove an amount for a customer

Request Body

{
  "amount_in_cents": 5000,
  "currency": "USD"
}

Preapprove Object

A price Object

Price Object

Parameter	Type	Description
amount_in_cents*	number	The amount you would like to preapprove, in cents
currency*	string	The 3 character currency code as defined by ISO 4217

Response Body

{
  "uuid": "6c9db5d4-d09a-4224-860a-b5438ac32ca8",
  "approved": true
}

Create order by customer

POST https://gateway.sezzle.com/v2/customer/{customer_uuid}/order

You can use this endpoint to create an order for a customer

Header Parameters

Parameter	Type	Description
Sezzle-Request-Id	string	Optional. Contains a unique merchant-generated ID. Use this header to enforce idempotency when authorizing order payment.

Request Body

{
  "intent": "AUTH",
  "reference_id": "monthly_sub_123",  
  "order_amount": {
    "amount_in_cents": 5000,
    "currency": "USD"
  }
}

Order Payment Object

Parameter	Type	Description
intent*	string	Accepted values are “AUTH” or “CAPTURE”
reference_id*	string	A reference ID for the order
order_amount*	object	The amount and currency of the order

Order Amount Object

A price Object

Price Object

Parameter	Type	Description
amount_in_cents*	number	The amount you would like to authorize, in cents
currency*	string	The 3 character currency code as defined by ISO 4217

Response Body

{
  "uuid": "6c9db5d4-d09a-4224-860a-b5438ac32ca8",
  "links": [
    {
      "href": "https://gateway.sezzle.com/v2/order/6c9db5d4-d09a-4224-860a-b5438ac32ca8",
      "method": "GET",
      "rel": "self" 
    },
    {
      "href": "https://gateway.sezzle.com/v2/order/6c9db5d4-d09a-4224-860a-b5438ac32ca8",
      "method": "PATCH",
      "rel": "self"
    },
    {
      "href": "https://gateway.sezzle.com/v2/order/6c9db5d4-d09a-4224-860a-b5438ac32ca8/release",
      "method": "POST",
      "rel": "release" 
    },
    {
      "href": "https://gateway.sezzle.com/v2/order/6c9db5d4-d09a-4224-860a-b5438ac32ca8/capture",
      "method": "POST",
      "rel": "capture" 
    },
    {
      "href": "https://gateway.sezzle.com/v2/order/6c9db5d4-d09a-4224-860a-b5438ac32ca8/refund",
      "method": "POST",
      "rel": "refund" 
    },
  ],
  "intent": "AUTH",
  "reference_id": "monthly_sub_123",  
  "order_amount": {
    "amount_in_cents": 5000,
    "currency": "USD"
  },
  "authorization": {
    "authorization_amount": {
      "amount_in_cents": 5000,
      "currency": "USD"
    },
    "approved": true,
    "expiration":"2020-04-23T16:13:44Z"
  }
}

Tokens

Use the tokens endpoints to get a customer uuid

Get a session token

GET https://gateway.sezzle.com/v2/token/{token}/session

You can use this endpoint to get the current state of a session token

If the customer is not tokenized, then the customer object will be empty.

Response Body

{
  "token": "4f8cf865-2089-4423-85fd-ea833a16b62d",
  "expiration": "2020-04-29T19:31:54Z",
  "links": [
    {
      "href": "https://gateway.sezzle.com/v2/token/4f8cf865-2089-4423-85fd-ea833a16b62d/session",
      "method": "GET",
      "rel": "self" 
    }
  ],
  "customer": {
    "uuid": "a9d8e15c-5e4a-4201-aa8f-7540f934a9a2",
    "expiration": "2020-10-13T14:29:41Z",
    "links": [
      {
        "href": "https://gateway.sezzle.com/v2/customer/a9d8e15c-5e4a-4201-aa8f-7540f934a9a2",
        "method": "GET",
        "rel": "self" 
      }
    ]
  }
}

Get a customer token

GET https://gateway.sezzle.com/v2/token/{token}/customer

Note: this endpoint is not yet implemented, but you will be able to use this endpoint to get the current state of a customer token

If the customer is not tokenized, then the customer object will be empty.

Response Body

{
  "token": "4f8cf865-2089-4423-85fd-ea833a16b62d",
  "expiration": "2020-04-29T19:31:54Z",
  "links": [
    {
      "href": "https://gateway.sezzle.com/v2/token/4f8cf865-2089-4423-85fd-ea833a16b62d/customer",
      "method": "GET",
      "rel": "self" 
    }
  ],
  "customer": {
    "uuid": "a9d8e15c-5e4a-4201-aa8f-7540f934a9a2",
    "expiration": "2020-10-13T14:29:41Z",
    "links": [
      {
        "href": "https://gateway.sezzle.com/v2/customer/a9d8e15c-5e4a-4201-aa8f-7540f934a9a2",
        "method": "GET",
        "rel": "self" 
      }
    ]
  }
}

Reports

Settlement Reports

These endpoints allow you to view a list of payout summaries or a detailed report of an individual payout.

Settlement Summaries Response Body

[
    {
        "uuid": "b7916fbe-f30a-4435-b411-124634287a8ca",
        "payout_currency": "USD",
        "payout_date": "2019-12-09T15:52:33Z",
        "net_settlement_amount": 9370,
        "forex_fees": 0,
        "status": "Complete"
    },
    {
        "uuid": "c51343hba-d54b-5641-e341-15235523b3at",
        "payout_currency": "USD",
        "payout_date": "2019-12-10T15:52:33Z",
        "net_settlement_amount": 23470,
        "forex_fees": 0,
        "status": "Complete"
    }
]

Settlement Summaries Request

GET https://gateway.sezzle.com/v2/settlements/summaries

Query Parameter	Description
start-date*	The start date for the report. Must be in yyyy-mm-dd format.
end-date	The end date for the report. Must be in yyyy-mm-dd format. If omitted, will default to the current date.
offset	The offset for the report. Limit is 20.
currency-code	The ISO-4217 currency code of the account. If omitted, will default to USD.

Settlement Details Response

total_order_amount,total_refund_amount,total_fee_amount,total_returned_fee_amount,total_chargeback_amount,total_chargeback_reversal_amount,total_interest_transfer_amount,total_correction_amount,total_referral_revenue_transfer_amount,total_bank_account_withdrawals,total_bank_account_withdrawal_reversals,forex_fees,net_settlement_amount,payment_uuid,settlement_currency,payout_date,payout_status
703.20,-5.00,-43.80,.30,0.00,0.00,-4.30,1.71,10.00,100.00,-100.00,0.00,693.61,a5c13qt1-4126-41d3-2fq8-9ca431f51431,USD,2019-11-02 00:05:00 +0000 UTC,Complete
type,order_capture_date,order_created_at,event_date,order_uuid,customer_order_id,external_reference_id,amount,posting_currency,type_code,chargeback_code
ORDER,2019-11-01T19:09:50Z,2019-11-01T19:09:50Z,2019-10-22T19:09:50Z,bm99f-31vu1-kg00e-rae1g,1,12345,500.00,USD,001,
ORDER,2019-11-01T19:09:50Z,2019-11-01T19:09:50Z,2019-10-22T19:09:50Z,va13d-474s9-3000e-nungg,13,12346,200.00,USD,001,
ORDER,2019-11-01T20:00:01Z,2019-11-01T00:00:01Z,2019-11-01T00:00:01Z,as41g-4v4s9-3000e-nunh0,1,12347,1.40,USD,001,
ORDER,2019-11-01T20:00:01Z,2019-11-01T20:00:01Z,2019-11-01T20:00:01Z,as62l-5ptqs-9g00e-pvk10,2,12348,1.80,USD,001,
FEE,2019-11-01T19:09:50Z,2019-11-01T19:09:50Z,2019-11-01T19:09:50Z,bm99f-31vu1-kg00e-rae1g,1,12345,-30.00,USD,003,
FEE,2019-11-01T19:09:50Z,2019-11-01T19:09:50Z,2019-11-01T19:09:50Z,va13d-474s9-3000e-nungg,13,12346,-12.00,USD,003,
FEE,2019-11-01T20:00:01Z,2019-11-01T00:00:01Z,2019-11-01T20:00:01Z,as41g-4v4s9-3000e-nunh0,1,12347,-1.20,USD,003,
FEE,2019-11-01T20:00:01Z,2019-11-01T20:00:01Z,2019-11-01T20:00:01Z,as62l-5ptqs-9g00e-pvk10,2,12348,-0.60,USD,003,
REFUND,2019-10-22T19:09:50Z,2019-10-22T19:09:50Z,2019-11-01T19:09:50Z,bm5rm-vg2js-1tsky-c2dsky,8,12344,5.00,USD,002,
RETURNED_FEE,2019-10-22T19:09:50Z,2019-10-22T19:09:50Z,2019-11-01T19:09:50Z,bm5rm-vg2js-1tsky-c2dsky,7,12344,.30,USD,004,
CORRECTION,,,2019-11-01T17:00:01Z,,,,-1.29,,007,
CORRECTION,,,2019-11-01T17:00:01Z,,,,3.00,,007,
INTEREST_TRANSFER,,,2019-11-01T18:00:01Z,,,,-4.30,,008,
REFERRAL_REVENUE_TRANSFER,,,2019-11-01T15:00:01Z,,,,10.00,,009,
BANK_ACCOUNT_WITHDRAWAL,,,2019-11-02T00:05:00Z,,,,100.00,,010,
BANK_ACCOUNT_WITHDRAWAL_REVERSAL,,,2019-11-02T00:05:00Z,,,,-100.00,,011,

Settlement Details Request

GET https://gateway.sezzle.com/v2/settlements/details/{payout_uuid}

The settlement details response contains two sections. The first two rows are a summary of the payout. The remaining rows contain the individual line items that contributed to the payout.

Summary column definitions:

Column Header	Description
Total order amount	The sum of all orders on this payout.
Total refund amount	The sum of all refunds on this payout.
Total fee amount	The sum of all fees on this payout.
Total returned fee amount	The sum of all returned fees on this payout.
Total chargeback amount	The sum of all chargebacks on this payout.
Total chargeback reversal amount	The sum of all chargeback reversals on this payout.
Total interest transfer amount	The sum of all interest transfers on this payout. If you are not participating in the interest program, this field will be omitted.
Total correction amount	The sum of all corrections on this payout.
Total referral revenue transfer amount	The sum of all referral revenue transfers on this payout.
Total bank account withdrawal amount	The sum of all bank account withdrawals.
Total bank account withdrawal reversal amount	The sum of all bank account withdrawal reversals, which reflect a bank account withdrawal that has failed.
Forex fees	The cost of foreign exchange fees associated with this payout.
Net settlement amount	Net amount of settlement.
Payment uuid	The UUID for this payout.
Settlement currency	The currency in which this payout was sent.
Payout date	The date this payout was sent.
Payout status	The current status of this payout.

Line item column definitions:

Column Header	Description
Type	Describes the type of event (Order, Fee, Refund, etc.).
Order capture date	The date at which the order was captured. This field is empty if the order has not yet been captured.
Order created at	The date at which the order was created.
Event date	The date at which the event took place.
Order uuid	The Sezzle order number.
Customer order id	The customer’s order number.
External reference id	The external reference ID submitted with the order.
Amount	The amount of the event.
Posting currency	The customer’s currency code.
Type code	A numeric code that corresponds with the Type field.
Chargeback code	A numeric code that corresponds with the type of chargeback submitted.

Interest Account Reports

Sezzle gives merchants the option to enroll in an interest account program. If you are enrolled in the interest account program, you can use these endpoints to get the current balance and activity on the interest account. Fractions of cents are tracked to properly calculate daily interest accrual even if the interest balance is low.

Interest Account Balance Response Body

{
  "interest_balance": 5183.4624
}

Interest Account Balance Request

GET https://gateway.sezzle.com/v2/interest/balance

Query Parameter	Description
currency-code	The ISO-4217 currency code of the interest account. If omitted, will default to USD.

Interest Account Activity Response Body

type,event_date,interest_account_change_amount,interest_account_balance_after_change
INTEREST_PAYOUT,2019-12-21T19:10:00Z,122.8718,5101.4676 
INTEREST_WITHDRAWAL,2019-12-21T19:20:00Z,-26.1000,5075.3676 
INTEREST_ACCRUAL,2019-12-21T19:15:00Z,1.0702,5182.3922
INTEREST_ACCRUAL,2019-12-22T19:15:00Z,1.0702,5183.4624

Interest Account Activity Request

GET https://gateway.sezzle.com/v2/interest/activity

Query Parameter	Description
start-date*	The start date for the report. Must be in yyyy-mm-dd format.
end-date	The end date for the report. Must be in yyyy-mm-dd format. If omitted, will default to the current date.
offset	The offset for the report. Limit is 20.
currency-code	The ISO-4217 currency code of the interest account. If omitted, will default to USD.

Webhooks

You can use these endpoints to configure your webhooks

Create webhooks

POST https://gateway.sezzle.com/v2/webhooks

This endpoint can be used to subscribe to webhooks

Request Body

{
  "url": "https://example.com/webhooks",
  "events": [
    "customer.tokenized"
  ]
}

Webhooks Object

Parameter	Type	Description
url*	string	The url you are using to receive webhooks
events*	array	An array of events to subscribe to

Response Body

{
  "uuid": "747cf28a-bb5c-46a8-a288-d9b006fd6113",
  "links": [
  ]
}

Valid Webhook Events

Currently we accept the following Webhook events

Event	Description
customer.tokenized	This webhook is called when a customer is tokenized
order.authorized	This webhook is called when an order is authorized by Sezzle
order.captured	This webhook is called when an order is captured by Sezzle
order.refunded	This webhook is called when an order is refunded by Sezzle

List webhooks

GET https://gateway.sezzle.com/v2/webhooks

You can get a list of your webhooks using this endpoint

Response Body

[
  {
    "uuid": "747cf28a-bb5c-46a8-a288-d9b006fd6113",
    "links": [
      {}
    ],
    "url": "https://example.com/webhooks",
    "events": [
      "customer.tokenized"
    ]
  }
]

Delete webhooks

DELETE https://gateway.sezzle.com/v2/webhooks/{webhooks_uuid}

You can delete your webhooks using this endpoint

There is no response body for this request on a success, we return an HTTP 204 Status No Content.

Errors

V2 endpoints will return an array of standardized error objects.

We attempt to keep these errors as consistent as possible, and will announce any changes in advance if they are required.

Error Response Body

[
  {
    "code": "invalid",
    "location": "order.amount.amount_in_cents",
    "message": "Order amount must be greater than $0.99",
    "debug_uuid": "919f40d0-874b-4d98-810d-ed2246a8ad77"
  }
]

SezzleJS

Purpose

SezzleJS serves to load our sales widgets to web pages. The widgets will not show unless a config is provided before the script is loaded. The repository for this project can be found at https://github.com/sezzle/sezzle-js.

Configuring the Widgets

An example of how to configure the widget:

    document.sezzleConfig = 
    {
        targetXPath: ['.price'],
        renderToPath: ['..'],
        urlMatch: 'product',
        theme: 'light',
        scaleFactor: 1.0,
        logoSize: 1.00,
        logoStyle: {'margin': '0px 0px -4px 1px','transformOrigin': 'center top'},
        altVersionTemplate: {
          'en': 'or 4 interest-free payments of %%price%% with %%logo%% %%info%%',
          'fr': 'ou 4 paiements de %%price%% sans intérêts avec %%logo%% %%info%%'
        },
        splitPriceElementsOn: '-',
        ignoredPriceElements: ['.Price-compareAt'],
        ignoredFormattedPriceText: ['Subtotal', 'Total:', 'Sold Out'],
        hideClasses: ['.afterpay-paragraph'],
        fontFamily: 'inherit',
        fontSize: 12,
        fontWeight: 300,
        color: 'inherit',
        alignment: 'auto',
        alignmentSwitchMinWidth: 768,
        alignmentSwitchType: 'center',
        lineHeight: '13px',
        maxWidth: 400,
        marginTop: 0,
        marginBottom: 0,
        marginLeft: 0,
        marginRight: 0,
        language: navigator.language,
        forcedShow: false
    }

Only the targetXPath is required in the local config. Each key using the default value may be removed from the sezzleConfig, and the default values will be used automatically.

The config must be specified in a property of the document object called document.sezzleConfig. SezzleJS also provides various options to customize the widget’s position and appearance. The explanation for all the options can be found below:

targetXPath (required)

Purpose: Path to the element in the webpage where the product price text value will be detected.
Type: string, or array of strings
Default: “
Additional Details: Specify one path if only one price element is targeted. Specify multiple paths in an array if multiple price elements are targeted. The path may contain multiple subpaths. All subpaths need to be separated by the ’/’ character. IDs need to be preceded by a ’#’ character. Classes needed to be preceded by a ’.’ character. Tag names need to be followed by the applicable index. The format of a tagname is as follows: tagName-Index (e.g. ‘SPAN-2’). The indexes are zero-based, such that the first element of the specified type within the parent element is at index 0.

Example: ’#ProductSection/.product-price/SPAN-1’ would target the 2nd 'SPAN’ element contained within elements that contain the 'product-price’ class which are contained within the element with an ID of 'ProductSection’.

An example of targetXPath:

<div id="ProductSection">
    <div class="product-price">
        <span>Price: </span>
        <span>$15.99</span>
    </div>
</div>
<script type="text/javascript">
    document.sezzleConfig = {
        targetXPath: '#ProductSection/.product-price/SPAN-1'
    }
</script>

renderToPath (optional)

Purpose: Path to the element in the webpage relative to targetXPath where the Sezzle widget should be rendered.
Type: string, or array of strings
Default: ’..’
Additional Details: Path to the element below which the widget should render (widget’s previous element sibling). If you wish to place widgets in multiple places, you can pass multiple paths in an array. The price path at the nth index of the targetXPath array will be rendered at the path given at the nth index of the renderToPath array. If you do not pass anything to the nth index of the renderToPath array but there is a path at the nth index of targetXPath, then the widget will default to be rendered directly below the parent of the corresponding target element.
’./’ will place the widget as the next element sibling of the target element.
’../’ means go up one parent element.
As with targetXPath, prepend IDs with ’#’, classes with ’.’, and append tag names with the index (tagName-Index). It is recommended to keep the renderToPath as simple as possible to maximize compatibility.

urlMatch (optional)

Purpose: Specific word appearing in the url of pages where the widget config should be applied.
Type: string
Default: ”
Additional Details: Typical values are 'product’ or 'cart’, as applicable

theme (optional)

Purpose: Updates the logo color to coordinate and contrast with different background colors of websites.
Type: string
Options: dark, light, grayscale, black-flat, white, white-flat
Default: 'light’

scaleFactor (optional)

Purpose: Ratio at which to scale the Sezzle widget.
Type: number
Default: 1.0

logoSize (optional)

Purpose: Ratio at which to scale the Sezzle logo.
Type: number
Default: 1.00
Additional Details: The space the logo occupies between the widget text and the More Info link/icon is determined by the font size. When dramatically scaling the widget, it may be necessary to override the styling to adjust the left and right margins of the logo using logoStyle.

logoStyle (optional)

Purpose: Custom styling to apply to the Sezzle logo within the widget, particularly when using logoSize.
Type: object
Default: {}
Additional Details: The object will accept any CSS styling in JSON format. Keys must be surrounded by “, given in camelCase instead of kebob-case, and separated from the following key by a comma instead of a semi-colon.

altVersionTemplate (optional)

Purpose: Text content of the widget. Also changes the arrangement of price, logo, and the info/learn-more icon within the widget.
Type: string, or object
Default: {en: 'or 4 interest-free payments of %%price%% with %%logo%% %%info%%’, fr: 'ou 4 paiements de %%price%% sans intérêts avec %%logo%% %%info%%’}
Additional Details: Currently available templates: %%price%%, %%logo%%, %%link%%, %%info%%, %%question-mark%%, %%line-break%%

splitPriceElementsOn (optional)

Purpose: Character or string at which to split the price elements (for elements with price ranges).
Type: string
Default: ”
Additional Details: Certain websites, especially WooCommerce websites, have price ranges as their price element (e.g. $650 - $1000). Setting this field to the character or string which separates the prices (e.g. in the case above, it is ’-’) enables the widgets to parse the price elements separately. For instance, setting this field to ’-’ would cause the widget to render the widget price above as $162.50 - $250.00.

An example of splitPriceElementsOn:

<div class="price">
    <span class="woocommerce-Price-amount">$12</span>
    " - "
    <span class="woocommerce-Price-amount">$15</span>
</div>
<script type="text/javascript">
    document.sezzleConfig = {
        targetXPath: '.price/.woocommerce-Price-amount',
        splitPriceElementsOn: '-',
        relatedElementActions: [{
            relatedPath: '.',
          initialAction:(e, t)=> {
              if(e.nextSibling&&" – "===e.nextSibling.textContent) {
          let i=(e.nextElementSibling.innerText.replace(",", "").substr(1)/4).toFixed(2);
          t.getElementsByClassName("sezzle-price-split")[0].innerText+=" - $"+i
              }
          }
        }, 
        {
            relatedPath: '.',
            initialAction:(e, t)=> {
        e.previousSibling&&" –" ===e.previousSibling.textContent&&(t.style="display: none")
            }
        }]
    }
</script>

ignoredPriceElements (optional)

Purpose: Child elements of targetXPath to be disregarded when detecting the price and rendering the widget.
Type: array of strings
Default: []
Additional Details: ignoredPriceElements can be used to solve targetXPath variations between sale and regular-priced items. In this case, targetXPath should point to the parent element surrounding the old and the new prices, then ignoredPriceElements will specify the old/compare-at price element. As with targetXPath, prepend IDs with ’#’, classes with ’.’, and append tag names with the index (tagName-Index).

An example of ignoredPriceElements:

<span class="ProductMeta__PriceList">
    <span class="product__price--regular">$20</span>
    <span class="product__price--sale">$15</span>
</span>
<script type="text/javascript">
    document.sezzleConfig = {
        targetXPath: '.ProductMeta__PriceList',
        ignoredPriceElements: ['.product__price--regular']
    }
</script>

ignoredFormattedPriceText (optional)

Purpose: Text strings within the targetXPath to be disregarded when detecting the price and rendering the widget.
Type: array of strings
Default: ['Subtotal’, 'Total:’, 'Sold Out’]

hideClasses (optional)

Purpose: Classes of elements that should be hidden when Sezzle’s logo is showing. This is useful for hiding a product similar to Sezzle that is not available in a country where Sezzle is.
Type: array of strings
Default: []

fontFamily (optional)

Purpose: Font family of the widget text.
Type: string
Default: 'inherit’

fontSize (optional)

Purpose: Font size of the widget text in pixels.
Type: number
Default: 12
Additional Details: Enter numbers only. Do not enter the unit (e.g. px)!

fontWeight (optional)

Purpose: Boldness of the widget text.
Type: number
Default: 300
Additional Details: 100 is the lightest, 900 is the boldest.

color (optional)

Purpose: Color of the widget text.
Type: string
Default: 'inherit’
Additional Details: Accepts all kinds of values (hexadecimal, rgb(), hsl(), etc…)

alignment (optional)

Purpose: Alignment of the widget relative to the parent element.
Type: string
Options: left, center, right, auto
Default: 'auto’

alignmentSwitchMinWidth (optional)

Purpose: Screen width in pixels below which the alignment switches to alignmentSwitchType instead of alignment.
Type: number
Default: 0
Additional Details: The most common breakpoint is 768 (handheld vs desktop). alignmentSwitchMinWidth is typically only necessary when alignment is not auto.

alignmentSwitchType (optional)

Purpose: Alignment of the widget relative to the parent element to be applied when the viewport width is narrower than alignmentSwitchMinWidth.
Type: string
Options: left, center, right, auto
Default: 'auto’

lineHeight (optional)

Purpose: Content height of the widget.
Type: string
Default: '13px’
Additional Details: Include unit (e.g.: px)

maxWidth (optional)

Purpose: Maximum width of the widget element in pixels.
Type: number
Default: 400
Additional Details: 200 to render the widget nicely on 2 lines, 120 for 3 lines.

marginTop (optional)

Purpose: Amount of space above the widget in pixels.
Type: number
Default: 0

marginBottom (optional)

Purpose: Amount of space below the widget in pixels.
Type: number
Default: 0

marginLeft (optional)

Purpose: Amount of space left of the widget in pixels.
Type: number
Default: 0

marginRight (optional)

Purpose: Amount of space right of the widget in pixels.
Type: number
Default: 0

language (optional)

Purpose: Language in which the widget text should be rendered.
Type: string
Options: 'en’, 'fr’
Default: navigator.language
Additional Details: To match the selected language in the window instead of the user’s default browser language, use document.querySelector('html’).lang. Currently, SezzleJS only supports 'en’ and 'fr’

forcedShow (optional)

Purpose: Shows the widget in every country if true. Shows the widget in only the United States and Canada if false.
Type: boolean
Options: false, true
Default: false

Uploading the Widgets

After building up the config, it is time to upload the widgets to your webpages! SezzleJS needs to be called in the HTML of the webpage in order for the widgets to be rendered. Place the config and the SezzleJS script at the bottom of the code file for the HTML page, and you should be all set!

Placing the following code snippet into your HTML loads SezzleJS into the webpage.

<script src="https://widget.sezzle.com/v1/javascript/price-widget?uuid={{replace_with_your_merchant_id}}"></script>

The SezzleJS script reflecting the applicable merchant ID must be called only after the config is specified (document.sezzleConfig is defined). Here is a complete example:

<script type="text/javascript">
    document.sezzleConfig = 
      {
        targetXPath: ['.price'],
        renderToPath: ['..'],
        urlMatch: 'product',
        theme: 'light',
        scaleFactor: 1.0,
        logoSize: 1.00,
        logoStyle: {'margin': '0px 0px -4px 1px','transformOrigin': 'center top'},
        altVersionTemplate: {
          'en': 'or 4 interest-free payments of %%price%% with %%logo%% %%info%%',
          'fr': 'ou 4 paiements de %%price%% sans intérêts avec %%logo%% %%info%%'
        },
        splitPriceElementsOn: '-',
        ignoredPriceElements: ['.Price-compareAt'],
        ignoredFormattedPriceText: ['Subtotal', 'Total:', 'Sold Out'],
        hideClasses: ['.afterpay-paragraph'],
        fontFamily: 'inherit',
        fontSize: 12,
        fontWeight: 300,
        color: 'inherit',
        alignment: 'auto',
        alignmentSwitchMinWidth: 768,
        alignmentSwitchType: 'center',
        lineHeight: '13px',
        maxWidth: 400,
        marginTop: 0,
        marginBottom: 0,
        marginLeft: 0,
        marginRight: 0,
        language: navigator.language,
        forcedShow: false
    }
</script>
<script src="https://widget.sezzle.com/v1/javascript/price-widget?uuid=12a34bc5-6de7-890f-g123-4hi5678jk901"></script>

The “simple” configuration above is intended for a single template of code (product or cart page) individually. Alternatively, a single configuration could be created for the entire webpage using an array of objects called configGroups. The Sezzle.js script will determine which configGroup(s) applies to the active webpage and render the widget(s) accordingly.

<script type="text/javascript">
document.sezzleConfig = {
  configGroups: [
    {
        targetXPath: ['.price'],
        renderToPath: ['..'],
        urlMatch: 'product',
        theme: 'light',
        scaleFactor: 1.0,
        logoSize: 1.00,
        logoStyle: {'margin': '0px 0px -4px 1px','transformOrigin': 'center top'},
        altVersionTemplate: {
          'en': 'or 4 interest-free payments of %%price%% with %%logo%% %%info%%',
          'fr': 'ou 4 paiements de %%price%% sans intérêts avec %%logo%% %%info%%'
        },
        splitPriceElementsOn: '-',
        ignoredPriceElements: ['.Price-compareAt'],
        ignoredFormattedPriceText: ['Subtotal', 'Total:', 'Sold Out'],
        hideClasses: ['.afterpay-paragraph'],
        fontFamily: 'inherit',
        fontSize: 12,
        fontWeight: 300,
        color: 'inherit',
        alignment: 'auto',
        alignmentSwitchMinWidth: 768,
        alignmentSwitchType: 'center',
        lineHeight: '13px',
        maxWidth: 400,
        marginTop: 0,
        marginBottom: 0,
        marginLeft: 0,
        marginRight: 0
    },
    {
      targetXPath: '.cart__subtotal',
      renderToPath: '../..', 
      urlMatch: 'cart',
    }
  ],
  forcedShow: false,
  language: document.querySelector('html').lang || navigator.language,
}
</script>
<script src="https://widget.sezzle.com/v1/javascript/price-widget?uuid=12a34bc5-6de7-890f-g123-4hi5678jk901"></script>

Testing

While you are working on the integration, you should test it before going live. Please use this section for information on testing.

Sandbox

API Endpoint https://sandbox.gateway.sezzle.com/v2
Sandbox Dashboard https://sandbox.dashboard.sezzle.com/merchant

Test Data

You can use the following test data to test your integration

Card

Card Number 4242424242424242
CVV/CVC any (3 numbers)
Expiration Date any
Name any
Address any

Phone and other information

Please use any valid US or CA phone number.
The expected OTP is 123123.
Personal information does not need to be real.

Open API

The OpenAPI Specification (OAS) defines a standard, language-agnostic interface to RESTful APIs which allows both humans and computers to discover and understand the capabilities of the service without access to source code, documentation, or through network traffic inspection.

Specification

View the Sezzle v2 OpenAPI Specification.

Client Generator

The OpenAPI Specification can be imported into the Swagger Editor to easily generate a Sezzle client in a variety of programming languages. If your language is not supported by Swagger, an alternate tool is OpenAPI Generator.