The MCP server

obelisk-mcp gives an agent the CLI’s four commands as tools.

Tool	What it does
obelisk_list	Every comment on a note, plus the line-numbered body.
obelisk_comment	Comment on one passage, anchored by a verbatim quote.
obelisk_reply	Reply to a comment.
obelisk_resolve	Resolve or reopen a comment.

Register it

claude mcp add obelisk --scope user -- npx -y obelisk-mcp

One registration covers every vault: the tools work on whichever vault the agent is running in. To reach a note in a vault the agent is not running in, pass an absolute path.

The server is listed in the official MCP registry as io.github.zachhannum/obelisk, for a client that installs from there.