diff --git a/org-clock-waybar.el b/org-clock-waybar.el
index 24bafa4..cd8b9e4 100644
--- a/org-clock-waybar.el
+++ b/org-clock-waybar.el
@@ -1,10 +1,45 @@
 ;;; org-clock-waybar --- Summary
 
+;; Copyright (C) 2021 Gergely Polonkai
+
+;; Author: Gergely Polonkai <gergely@polonkai.eu>
+;; Keywords: org, clocking, waybar
+;; Version: 1.0
+;; Package-Requires: ((emacs "26.1"))
+;; URL: https://gitea.polonkai.eu/gergely/org-clock-waybar
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program. If not, see <http://www.gnu.org/licenses/>.
+
 ;;; Commentary:
 
+;; Export the currently clocked-in task in JSON format that Waybar can process
+;;
+;; To use it, customize the `org-clock-waybar-filename' variable (defaults to
+;; $XDG_CONFIG_HOME/waybar-current-task.json) and add the following snippet to
+;; your Waybar config:
+;;
+;; "custom/org": {
+;;   "format": " {}",
+;;   "return-type": "json",
+;;   "restart-interval": 5,
+;;   "exec": "cat /home/yourusername/.cache/waybar-current-task.json"
+;; }
+
 ;;; Code:
 
 (require 'xdg)
+(require 'json)
 (require 'org-clock)
 
 (defgroup org-clock-waybar nil
@@ -12,7 +47,7 @@
   :group 'emacs)
 
 (defcustom org-clock-waybar-filename
-  (expand-file-name ".waybar-current-task.json" (xdg-cache-home))
+  (expand-file-name "waybar-current-task.json" (xdg-cache-home))
   "Name of the file to save task data to."
   :type 'string
   :group 'org-clock-waybar)
@@ -31,13 +66,15 @@ category will be a JSON null value."
   (let ((category (when org-clock-current-task
                     (get-text-property 0 'org-category org-clock-current-task)))
         (title (when org-clock-current-task
-                 (substring-no-properties org-clock-current-task))))
+                 (substring-no-properties org-clock-current-task)))
+        (output (json-new-object)))
     (with-current-buffer buffer
-      (insert "{\"title\":")
-      (insert (if title (json-encode-string title) "null"))
-      (insert ",\"category\":")
-      (insert (if category (json-encode-string category) "null"))
-      (insert "}"))))
+      (setq output (json-add-to-object output "text" (if title title "Not clocked in")))
+      (setq output (json-add-to-object output "alt" (if category category "")))
+      (setq output (json-add-to-object output "tooltip" ""))
+      (setq output (json-add-to-object output "class" ""))
+      (setq output (json-add-to-object output "percentage" ""))
+      (insert (json-encode output)))))
 
 (defun org-clock-waybar-save-task ()
   "Save the current clocked in task to `org-clock-waybar-filename'."