Holiday Calendar for VS Code

com.modernmustardseed/holiday-calendar

U.S. federal holidays with observed dates and business-day math. Example from an open-source kit.

client:VS Code transport:streamable-http tools:5

Install Holiday Calendar in VS Code

.vscode/mcp.json

{
  "servers": {
    "holiday-calendar": {
      "type": "http",
      "url": "https://starter.modernmustardseed.com/holidays"
    }
  }
}

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