agent mcp login <identifier>

Authenticates with an MCP server configured in mcp.json.

agent mcp login <identifier> starts a login flow with automatic callback handling for an MCP server configured in .cursor/mcp.json or ~/.cursor/mcp.json. Once login succeeds, the agent immediately has access to the server's authenticated tools.

✅ WHEN TO USE IT?

Make an MCP server with its own authentication (e.g. OAuth) usable for the first time

agent mcp login linear

⛔ WHEN NOT TO?

The server is already configured but just needs to be approved locally

agent mcp login handles authentication, not approving the server.

Better: Use agent mcp enable <identifier>

SOURCES

Cursor Docs — CLI Reference: Parameters ↗ cursor.com
Cursor Docs — CLI MCP ↗ cursor.com