---
title: ToolRouter — Agent Use Case Guide
description: Step-by-step guide for completing a task with a specific AI agent using ToolRouter.
url: https://toolrouter.com/tools/public-holidays/use-cases/build-holiday-aware-calendars/openclaw
---
# How to Build Holiday-Aware Calendars with OpenClaw

OpenClaw automates annual business calendar generation for all operating countries. Schedule data pulls at the start of each year, calculate working days per period for every country, and output formatted calendar files ready for import into your ERP, scheduling, or project management systems automatically.

## Setup

openclaw mcp add toolrouter -- npx -y toolrouter-mcp

## Steps

1. Connect ToolRouter: openclaw mcp add toolrouter -- npx -y toolrouter-mcp
2. Ask OpenClaw: "Get all public holidays for Germany in 2026"
3. OpenClaw returns the full holiday list
4. Ask: "Calculate working days per quarter for 2026"
5. Use the data in your business calendar system

## Example Prompt

```
Get public holidays for Germany in 2026 and build a quarterly working-days summary excluding weekends and holidays.
```

## Tips

- Compare working-day counts across countries to understand capacity differences
- Use the data to set realistic delivery timelines for international projects
- Refresh the calendar annually to account for holidays that change dates
