Pick visibility once when you create a wiki. The tree of nodes and the MCP tools work identically across all three; only who can read and how the wiki is reached differ.
Public
Anyone reads, search engines index the content, invited authors write. SEO ships ready out of the box: no plugin, no external generator, no extra deploy step.
Private team
Invited members read and write; everyone else gets a 404. Hidden from search engines and from link unfurls. Suits project workspaces, internal documentation, in-progress drafts, and anything that should stay inside the team until it's ready, or stay there permanently.
Self-hosted, single user
Runs on your own machine. Same engine, same MCP tools, no cloud dependency, no accounts: the bootstrapped user owns everything. Suits confidential data, offline work, and personal scratchpads before anything goes public.