Command reference · Cursor CLI

agent mcp login <identifier>

Authenticates with an MCP server configured in mcp.json.

agent mcp login <identifier> is a terminal subcommand and is called directly in the shell. It authenticates you with an MCP server configured in .cursor/mcp.json (project) or ~/.cursor/mcp.json (global) – needed for servers with their own authentication, such as OAuth. According to the documentation, the CLI uses a streamlined login flow with automatic callback handling for this; right after a successful login, the agent has access to the server's authenticated tools. In interactive mode there is no separate /mcp login slash command: login there instead runs via the /mcp browser, where you select a server and choose the Login option within it – functionally identical, just via a menu instead of a direct terminal call. If an already authenticated server just needs to be enabled globally instead of logged in again, agent mcp enable <identifier> is the right command.