This example shows how to use hx-headers to pass values via HTTP headers (doc)
<ulhx-headers='{ "X-NAME" : "Anna"}'><lihx-get="/htmx">GET</li><lihx-post="/htmx">POST</li><lihx-put="/htmx">PUT</li><lihx-patch="/htmx">PATCH</li><lihx-delete="/htmx">DELETE</li></ul>