ARC-Relay for Cursor

com.arc-relay/mcp

DMARC-safe email forwarding for agents: aliases, DNS health checks, and MCP tools on your domains.

client:Cursor transport:streamable-http

Install ARC-Relay in Cursor

~/.cursor/mcp.json · windows: %USERPROFILE%\.cursor\mcp.json

{
  "mcpServers": {
    "mcp": {
      "url": "https://arc-relay.com/mcp"
    }
  }
}

Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs