jira/rest/api/2/dashboard?startAt=&maxResults=

jira/plugins/servlet/Wallboard/?dashboardId=&os_username=&os_password=

curl -D- -u fred:fred -X GET -H "Content-Type: application/json"         http://example.com/rest/api/2/issue/createmeta

curl -D- -X GET -H "Authorization: Basic %BASE64-CREDENTIDALS%" -H "Content-Type: application/json" "https://webjets.atlassian.net/rest/api/2/issue/WJ-333"

var user = window.btoa( user + ":" + password );
getRequiredTickets("key=ABC", user);

function getRequiredTickets(query, credentials){
$.ajax
  ({
    type: "GET",
    url: "https://ltn3-pur-jira.company.corp:1234/rest/api/2/search?jql=" + query,
    dataType: 'json',
    async: false,
    headers: {
        "Authorization": "Basic " + credentials
    },
    success: ajaxSuccess, //some callback function
    error: ajaxFail       //some callback function
});
}

"content_scripts": [
    {
        "matches": ["<all_urls>"],
            "js": ["content.js", "jquery-3.2.1.min.js"]
        }
    ]