How do I stop someone from visiting my multiverse?

Open The Nexus from Settings, find that person under your list of connections, and revoke the connection. Access ends immediately — they can't reopen your chart, and any abilities you'd granted them (like summoning a role or creating a realm alongside you) end with it.

Revoke one connection

Removes just that person. Anyone else you're connected to keeps whatever access you've given them.

Rotate your beacon code

If you've shared your code widely and want a clean slate, rotate it from The Nexus. The old code stops working for anyone who hasn't already connected — existing connections aren't affected, so pair this with revoking specific people if you also want them gone.

Manage access before it comes to revoking

Every connection's abilities — summon a role, create a realm, save an image — are off by default and granted one at a time from Manage Access. Unlock is the only thing an active connection can always do; everything else you choose.