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Connect Cursor to the Arcus docs MCP server so its agent and chat panes can answer questions and write code grounded in the live spec.

Prerequisites

  • Cursor 0.45 or newer (MCP support required)

Setup

1

Open MCP settings

In Cursor, open Settings → Cursor Settings → MCP (or run the command palette: MCP: Add new server).
2

Add the Arcus server

Add an entry with the following configuration:
Save the file. Cursor stores user-level MCP servers in ~/.cursor/mcp.json and project-level ones in .cursor/mcp.json at the repo root — pick whichever scope fits.
3

Try it

Open the agent or chat pane and ask:
Show me how to subscribe to the orderbook WebSocket channel for BTC-USD.
Cursor will call the MCP server and ground its answer in the live Arcus reference.

Notes

  • The server needs no authentication — there is no sign-in step.
  • If the server doesn’t connect, upgrade Cursor — remote MCP support landed in recent versions.
  • For the underlying server details, see the MCP server overview.