Sezzle

name: Sezzle
description: Sezzle is a buy-now-pay-later platform that enables merchants to offer installment payment options at checkout.
  Its REST APIs support merchant checkout integration, order management, shopper authentication, customer tokenization, and
  payment installment processing — allowing shoppers to split purchases into four interest-free payments over six weeks.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/sezzle/refs/heads/main/apis.yml
version: '0.19'
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- Buy Now Pay Later
- BNPL
- Payments
- Installments
- Fintech
- Merchant Integration
- Checkout
apis:
- name: Sezzle API v2
  description: The primary Sezzle REST API for merchants who want to accept Sezzle as a payment option. Provides endpoints
    for authentication, checkout session creation, order management (capture, refund, release, reauthorize, upcharge), customer
    tokenization, webhook management, and settlement reporting.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.sezzle.com/docs/api/intro
  baseURL: https://gateway.sezzle.com/v2
  tags:
  - Payments
  - Checkout
  - Orders
  - Customers
  - Webhooks
  - Settlements
  properties:
  - type: Documentation
    url: https://docs.sezzle.com/docs/api/intro
  - type: OpenAPI
    url: https://gateway.sezzle.com/v2api.yaml
  - type: Sandbox
    url: https://sandbox.gateway.sezzle.com/v2
  - type: Authentication
    url: https://docs.sezzle.com/docs/api/intro
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/sezzle/refs/heads/main/plans/plans.yml
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/sezzle/refs/heads/main/rate-limits/rate-limits.yml
  - type: FinOps
    url: https://raw.githubusercontent.com/api-evangelist/sezzle/refs/heads/main/finops/finops.yml
  contact:
  - FN: Sezzle Merchant Support
    url: https://merchant-help.sezzle.com
    email: ''
- name: Sezzle API v1
  description: The legacy Sezzle v1 API for merchants. Supports checkout creation and order completion via redirect-based
    flow. Deprecated in favor of v2; existing integrations are encouraged to migrate to v2.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.sezzle.com/docs/api/v1/v1
  baseURL: https://gateway.sezzle.com/v1
  tags:
  - Payments
  - Checkout
  - Legacy
  properties:
  - type: Documentation
    url: https://docs.sezzle.com/docs/api/v1/v1
  - type: Sandbox
    url: https://sandbox.gateway.sezzle.com/v1
  contact:
  - FN: Sezzle Merchant Support
    url: https://merchant-help.sezzle.com
    email: ''
common:
- type: Portal
  url: https://docs.sezzle.com/
- type: Dashboard
  url: https://dashboard.sezzle.com/merchant
- type: MerchantSupport
  url: https://merchant-help.sezzle.com
- type: GitHub
  url: https://github.com/sezzle
- type: SDKNode
  url: https://github.com/sezzle/sezzle-node
- type: SDKAndroid
  url: https://github.com/sezzle/sezzle-merchant-sdk-android
- type: SDKiOS
  url: https://github.com/sezzle/sezzle-merchant-sdk-ios
- type: IntegrationMagento2
  url: https://github.com/sezzle/sezzle-magento2
- type: IntegrationWooCommerce
  url: https://docs.sezzle.com/
- type: IntegrationShopify
  url: https://apps.shopify.com/sezzle-payments
- type: Pricing
  url: https://sezzle.com/pricing
- type: Terms
  url: https://sezzle.com/terms-of-service
- type: Privacy
  url: https://sezzle.com/privacy-policy
maintainers:
- FN: API Evangelist
  url: https://apievangelist.com
  email: kin@apievangelist.com