This example shows how to supply custom headers for JSON Database. First, create the new report instance:

// Creating new report
const report = new Stimulsoft.Report.StiReport();
console.log("New report created");

...

Then, in onBeginProcessData event handler add custom HTTP headers:

...

// In `onBeginProcessData` event handler add custom HTTP headers
report.onBeginProcessData = function (args) {
    if (
        args.database === "JSON" && 
        args.command === "GetData" && 
        args.pathData && args.pathData.endsWith("/ProtectedDemo.json")
    ) {
        // Add custom header to pass through server protection
        args.headers.push({key: "X-Auth-Token", value: "*YOUR TOKEN*"});
    }
};
	
...

After that, load and render report:

...

// Load report from url
report.loadFile("SimpleListWithProtectedJson.mrt");
console.log("Report template loaded");
// Renreding report
report.renderAsync(function () {
	console.log("Report rendered. Pages count: ", report.renderedPages.count);

	// Saving rendered report to file
	report.saveDocumentFile("SimpleListWithProtectedJson.mdc");
	console.log("Rendered report saved");
});

In the screenshot below you can see the result of the sample code: