I needed to get some log messages out of sparkpost, but couldn't find anything here or in the AA documentation. Had a bit of a play around and managed to pull some records into a pointer variable for onward processing. I hope this snippet may be of use to others.

Code:
'Date Created: 11-Oct-2014 02:57:06 PM
'Last Updated: 25-Jan-2017 10:08:07 AM
'Created By  : Jon
'Updated By  : Jon
'Retrieve bounce log entries from Sparkpost
'Test version set to pull all bounces since 2017-06-10
'Need to parameterize URL to add other options listed at https://developer.sparkpost.com/api/message-events.html


'********************************************
'ARMAsoft only - get Sparkpost Key from table
'********************************************
'select email account and details for send depending on C_ID2 prefix
DIM account as P
account = table.open("email_accounts",FILE_RO_SHARED)
dim key as c = alltrim(account.password)
account.close()


'Code below generated by Alpha Anywhere cURL to XBasic wizard
dim cf_1 as extension::CurlFile
dim flag_1 as l
dim slist1[0] as c = [ "Content-Type: application/json" , "Authorization: " + key ]

dim ce as extension::Curl

ce = extension::Curl.Init()
ce.setOpt("URL","https://api.sparkpost.com/api/v1/message-events?events=bounce&from=2017-06-10T11:00")
ce.setOpt("NOPROGRESS",1)
ce.setOpt("USERAGENT","curl/7.34.0")
ce.setOpt("HTTPHEADER",slist1)
ce.setOpt("MAXREDIRS",50)
ce.setOpt("CAINFO",a5.Get_Exe_Path()+"\caroot\ca-cert.pem")
ce.setOpt("CAPATH",a5.Get_Exe_Path()+"\caroot")
ce.setOpt("CUSTOMREQUEST","GET")
ce.setOpt("VERBOSE",1)
ce.setOpt("TCP_KEEPALIVE",1)
ce.SetOpt("FILE",cf_1)		
flag_1 = ce.Exec()
if flag_1 then
   dim headers as c
	dim contents as c
	headers = cf_1.GetHeaders()
	contents = cf_1.GetContent()

	'parse results from Sparkpost and populate multi-level array, required elements in arr.results[n]
	dim arr as p
	dim ecount as N
	dim i as N
	arr = json_parse(contents)
	'get number of elements
	ecount = arr.results.size()
	'loop through each element of the result...
	for i = 1 to ecount
		showvar(arr.results[i])
	next
end if
ce.close()