tilwhen date engine for Gemini CLI

com.tilwhen/tilwhen

Deterministic date arithmetic with auditable receipts: business days, due dates, holidays.

client:Gemini CLI transport:streamable-http tools:9

Install tilwhen date engine in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

{
  "mcpServers": {
    "tilwhen": {
      "httpUrl": "https://mcp.tilwhen.com/mcp"
    }
  }
}

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs