Messtone Devices Enables Generate an access token, request body in cURL example: curl -k –tlsv1.2\-H “Content-Type:application/x-www-form-urlencoded”\-X POST https://api-it.capitalone.com/oauth2/token\-d client_id=MESSTONE_CLIENT_ID\-d client_secret=MESSTONE_CLIENT_SECRET\-d grant_type=client_credentials HTTP/1.1 200 OK Content-Type: application/json {“token_type”:”Bearer” “access_token”:”yJlbmMiOiJBMTI4QOJDXOhTMjU2I…_XAySrgypPx”,/* ignore the other properties*/} curl -k –tlsv1.2\-H “Content-Type: application/x-www-form-urlencoded”\-X POST https://api-it.capitalone.com/oauth2/token\-d client_id=MESSTONE_CLIENT_ID\-d client_secret=MESSTONE_CLIENT_SECRET_SECRET\-d grant-type=client_credentials HTTP/1.1 200 OK Content-Type: application/json {“token_type”:”Bearer” “access_token”:”yJlbmMiOiJBMTI4QOJDXOhTMjU2I…_XAySrgypPx”,/* ignore the other properties*/} Authorization:token_type access_token Authorization:Bearer yJlbmMiOiJBMTI4QOJDXOhTMjU2I…_XAySrgxpPx Content-Type: application/x-www-form-urlencoded {“token_type”:”Bearer”,”access_token”:”tuH3_7MiOiJBMTI4QOJDXhYlTMjU2IiwicGNrIjoxLCJhbGciOiJESVIiLCJraWQiOiRVLHjwOg.dESEDQZGkRKFyShPUfDNEw”,”expires_in”:0,”refresh_token”:”ignore”} curl #REQUEST curl -i -k –tlsv1.2 -H “Authorization:Bearer 6BGFYIpMEttQA2kfFRahbXf1XozWZ1zpDxwTTSkX324fVQmgHxbbcn”-H “Content-Type: application/json;v=1”-H “Accept: application/json;v=1”-H “Client-Correlation-Id:301a-2862-d4a5-26f9”-H “Channel-Type:Mobile”-d” {\”additionalTransactionData\”:{\”bankIdentificationNumber\”:\”123456\”,\”lastFourCardNumber\”:\”7890\”,\”purchaseAmount\”:99.95,\”purchaseCurrency\”:\”840\”,\”additionalTransactionDataTimestamp\”:\”2020-02-21TI7:32:28.123Z\”,\”merchantId\”:\”3ace-6a8d-d218-a4c7\”,\”directDataSharePartnerId\”:\”f711-fd57-45ee-56fd\”},\”partnerRiskData\”:{\”partnerRiskScore\”:\”High\”,\”isTrustedPartner\”:true},\”deviceData\”:{\”browserIP\”:\”23.2.163.43\”,\”cityCodeIp\”:\”Toledo\”,\”regionCodeIp\”:\”Ohio\”,\”countryCodeIp\”:\” US\”,\”deviceId\”:\”00:1B:44:11:3A:B7\”,\”browserJavascriptEnabled\”:true,\”browserJavaEnabled\”: true,\”browserUserAgent\”:\”Mozilla/5.0 (Macintosh;Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML,like Gecko) Chrome/80.0.3987.100 Safari/537.36\”,\”browserTZ\”:\”true\”,\”browserLanguage\”:\”en-US\”,\”deviceLongitude\”:\”-90.0715\”,\”deviceLatitude\”:\”29.9511\”,\”deviceChannel\”:\”01\”},\”customerData\”:{\”customerFirstName\”:\”Ray\”,\”customerLastName\”:\”Hubbard\”,\”customerEmailAddress\”:\”Ray.wylie@hubbard.com\”,\”homePhone\”:\”4094356789