SPIn specificationREST APICallbackUse with AICallback Get Last CallbackAPI ExplorerSandBoxhttps://test.spinpos.netGETSendRetrieves the last callback payload received for a transaction.Response Body200application/jsoncURLJavaScriptGoPythonJavaC#curl -X GET "https://example.com/Callback/GetLastCallback"200{}Post Callback POSTSOAP API