Afterpay no longer offer their services via API, instead integration via EFTPOS/payment pinpads is required. This package is no longer maintained as a result.

An unofficial, light-weight wrapper for .Net, around the After Pay In-Store API (https://docs.afterpay.com.au/instore-api-v1.html).

Currently;

• .Net Standard 2.0
• .Net 4.0+

This library provides models for the request and response payloads, and a client class to access (only) the in-store API. It provides some basic error handling around timeouts and 409 conflict errors on retry for some endpoints. In addition it largely handles the authentication process and renewing tokens automatically, assuming the correct values are provided. It can access either the production or sandbox environments. The client class implements an interface, so can be easily mocked/stubbed etc if required for unit testing. Custom HTTP client and clock implementations can be injected into the client.

AfterPay servers require TLS 1.2. This library will configure System.Net.ServicePointManager.SecurityProtocols to support TLS 1.2 even on .Net 4.0, however for this to work either a later .Net framework must be installedor Windows will need to have the registry edited to support the protocol.

It does not

• Resolve you of the responsibility for writing a robust system.
• Automatically queue reversals.
• Implement any form of crash recovery.
• Provide any access for the web based flow/API.

You really need to read the AfterPay API documentation to understand the processes and error handling required. Additionally any solution implemented must be tested/certified by AfterPay regardless of the use of this library.

Quick start and full API reference documentation here

Make sure you read the AfterPay API documentation too.