Curl

curl -x https://proxy.example.com:8443 \

    -U proxyuser:proxypassword \
    -u "tvoje.emailova.adresa@firma.com:TVŮJ_API_TOKEN" \
    -H "Accept: application/json" \
    "https://tvojeinstance.atlassian.net/rest/api/3/issue/KEY-123"

set proxyUser=proxyuser set proxyPassword=pwd1 set proxyHost=proxy.intranet.com set proxyPort=8080 set proxyURL=http://%proxyUser%:%proxyPassword%@%proxyHost%:%proxyPort% set jiraUser=jirauser@intranet.com set jiraPassword=??? set jiraHost=https://cloudjira.atlassian.net set jiraURL=%jiraUser%:%jiraPassword%

This call "curl -k -x %proxyURL% -u %jiraURL% -H "Accept: application/json" %jiraHost%/rest/api/3/issue/TEST-7" result in {"errorMessages":["Issue does not exist or you do not have permission to see it."],"errors":{}}

curl -k -x %proxyURL% ^

    -u %jiraUser%:%jiraToken% ^
    -H "Accept: application/json" ^
    "%jiraHost%/rest/api/3/myself"