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-productions.s3.amazonaws.com/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-productions.s3.amazonaws.com/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-productions.s3.amazonaws.com/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: [email protected]