Shared clipboard between multiple Macbooks
If you are signed into the same iCloud account and have the Continuity features turned on you should be able to copy and paste between machines.


macOS Sierra: Copy and paste across devices



  With Universal Clipboard, you can copy text, images, photos, and videos on one Apple device and then paste the content on another Apple device.





  Note: To use Universal Clipboard, your devices must meet Continuity system requirements. They must also have Wi-Fi, Bluetooth, and Handoff turned on in System Preferences (on your Mac) and in Settings (on your iOS devices). You must be signed in to iCloud using the same Apple ID on all your devices.