siren for VS Code

io.github.yoavhizkih/siren

MCP server for Siren diagramming — teach AI models to create beautiful diagrams with Siren syntax

client:VS Code transport:stdio runtime:npm

Install siren in VS Code

.vscode/mcp.json

{
  "servers": {
    "siren": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "siren-mcp"
      ]
    }
  }
}

Requires agent mode. MCP: Open User Configuration puts the same block in every workspace. VS Code docs