Keystone for Cursor

pro.keystone-core/keystone

C4 architecture model of your system, built from code by your AI and read back as focused context.

client:Cursor transport:streamable-http

Install Keystone in Cursor

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

{
  "mcpServers": {
    "keystone": {
      "url": "https://keystone-core.pro/mcp"
    }
  }
}

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