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Sezzle Session API

The Session API from Sezzle — 2 operation(s) for session.

Sezzle Session API is one of 8 APIs that Sezzle publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Session. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, authentication docs, and rate-limit docs.

This API exposes 2 operations across 2 paths, and defines 13 schemas. It is described by OpenAPI 3.2.0, at version 2.0.0.

Requests are made against 2 base URLs: https://sandbox.gateway.sezzle.com/v2, https://gateway.sezzle.com/v2.

2 operations 2 paths 13 schemas 1 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
2.0.0
Base URL
https://gateway.sezzle.com/v2
Authentication
API Key
Terms of Service
Resource Areas
1

Authentication & Security 1

Sezzle Session API declares 1 security scheme for authenticating requests. An API key is passed in the header as Authorization (Bearer). By default, every request must be authenticated.

Paths & Operations 2

Across 2 paths, the API surfaces 2 operations — 1 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Session 2
POST
/session
Create a new session
postV2Session body → 201400401422
GET
/session/{session_uuid}
Get session status
getV2Session 1 param → 200400401404

Schemas 13

The contract defines 13 schemas that model the data the API accepts and returns. The most detailed are Order (9 properties), Address (8 properties), Customer (8 properties), Session (4 properties). Each schema is shown below with its type and property counts.

SessionStatus
object
2 properties
Customer
object
8 properties
InstallmentPlan
string
Intent
string
Order
object
9 properties
Address
object
8 properties 5 required
Discount
object
2 properties 2 required
Link
object
3 properties
Price
object
2 properties 2 required
Session
object
4 properties 2 required
Notification
object
3 properties
LineItem
object
4 properties 4 required
Error
array

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

sezzle-session-api-openapi.yml Raw ↑

Other APIs Sezzle publishes across the network.

Sezzle API v1
Sezzle Bearer Authentication API
Sezzle Customer API
Sezzle Order API
Sezzle Reports API
Sezzle Token API
Sezzle Webhooks API
Where this information came from

This is an independent, third-party profile of Sezzle Session API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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