@spelk piped command is a feature of bash or dash. You can create a script or invoke dash directly in "Application shortcuts":
sh -c 'xsel | sed -e "s/youtube.com/invidio.us/g" | xsel -b'
note the tricky quotation marks 😉
Why is this step necessary? reptilehouse.info might not be the server where you are registered, so we need to redirect you to your home server first.
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