Panta is a small macOS capture tool. It takes a screenshot or records the screen, lets you mark it up, and gives you a link you can paste anywhere.
Captures are served from cap.pantashot.com and stop working 365
days after they are made. There is nothing to browse there.
Panta is not a public download. Ask Jeff for a copy, then follow the install notes, which cover the Gatekeeper warning you will get on first launch. Once it is installed, Panta updates itself.
macOS 15 or later, on Apple silicon or Intel.