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

// Creating new dashboard
var report = Stimulsoft.Report.StiReport.createNewDashboard();
console.log("New dashboard 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 dashboard template and export it to PDF:

...

// Loading dashboard template
report.loadFile("DBSsimp.mrt");
console.log("Dashboard template loaded");

// Export to PDF
report.exportDocumentAsync((pdfData) => {
    // Converting Array into buffer
    var buffer = Buffer.from(pdfData);

    // File System module
    var fs = require('fs');

    // Saving string with rendered dashboard in PDF into a file
    fs.writeFileSync('./Dashboard.pdf', buffer);
    console.log("Dashboard saved into PDF-file.");
}, Stimulsoft.Report.StiExportFormat.Pdf);

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