# Services from kalender.halowerk.com on Zero

> kalender.halowerk.com serves 4 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/kalender.halowerk.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/kalender.halowerk.com/health.json

## Services

- [Agent Kalender Hub – Werktage Rechnen](https://www.zero.xyz/c/agent-kalender-hub-werktage-rechnen-0b96d0f0/llms.txt): $0.001/call via x402. Calculates a target date by counting a given number of working days forward or backward from a start date, accounting for public holidays in Germany, Austria, and Switzerland (including regional/cantonal variants) and optional custom days off.
- [Agent Kalender Hub – Public Holidays](https://www.zero.xyz/c/agent-kalender-hub-public-holidays-7bd921a7/llms.txt): $0.001/call via x402. Returns public holidays for Germany (by state, including Augsburg special case), Austria (by state), or Switzerland (by canton) for a given year, computing moveable feasts from Easter rather than a static table.
- [Agent Kalender Hub – Werktage (Working Days Calculator)](https://www.zero.xyz/c/agent-kalender-hub-werktage-working-days-calculator-0575cb4f/llms.txt): $0.001/call via x402. Calculates the number of working days in a date range for Germany, Austria, and Switzerland, accounting for weekends, public holidays (national and regional), and custom days off.
- [Agent Kalender Hub – Zeitzonenoffset](https://www.zero.xyz/c/agent-kalender-hub-zeitzonenoffset-b75d181c/llms.txt): $0.001/call via x402. Returns the UTC offset and next DST transition for a given point in time, resolved by geographic coordinates (via offline polygon lookup) or IANA time zone name.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)