affirm

Affirm Transactions API

The Affirm Transactions API provides server-side endpoints for managing the full lifecycle of Affirm payment transactions after a customer completes checkout. It supports authorization, capture, void, and refund operations, as well as listing and retrieving transaction details and associated settlement events. Merchants use this API to reconcile charges, process partial or full refunds, and track disbursement activity.

GitHub OpenAPI

Documentation

📖
Documentation
https://docs.affirm.com/developers/reference/introduction

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/affirm/refs/heads/main/openapi/affirm-transactions-openapi.yml

Schemas & Data

📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/affirm/refs/heads/main/json-schema/affirm-transaction-schema.json