Agent Kalender Hub

Public holidays, working days and time zones for Germany, Austria and Switzerland — down to the federal state and the canton. Every call is paid inside the request over x402. No signup, no API key, no dashboard.

Endpoints

Route	Price	What it does
`POST /feiertage`	0.001 USDC	Alle Feiertage eines Jahres für ein Land und ein Bundesland oder einen Kanton, mit Geltungsstufe und Begründung.
`POST /werktage`	0.001 USDC	Werktage zwischen zwei Daten zählen, mit Liste der Werktage und Begründung je übersprungenem Tag.
`POST /werktage/rechnen`	0.001 USDC	Startdatum plus oder minus X Werktage, mit dem Weg dorthin.
`POST /zeitzone`	0.001 USDC	Zeitzone aus Koordinate oder IANA-Name, mit aktuellem Versatz, Ortszeit und nächster Umstellung.

How a call works

curl -s -X POST https://kalender.netzhandwerker.de/werktage \
  -H "Content-Type: application/json" \
  -d '{"von":"2026-12-01","bis":"2026-12-31","land":"DE","region":"BY"}'

The first call answers with HTTP 402 and the accepted payment terms. An x402 capable client signs the terms and repeats the request; the answer arrives in the same round trip. Any x402 client library, or an MCP client pointed at /mcp, handles this without further setup.

How the answers are produced

One versioned rule set ships with the service: /regelwerk, currently 2026.08.06.
Movable feasts are computed from the Easter date, never stored as a table.
Nothing is fetched from third parties while a request runs.
Regional special cases are modelled explicitly: Fronleichnam, Reformationstag, Buß- und Bettag and the Augsburger Friedensfest.
A yearly cron compares the rule set against an independent reference and reports every difference.

Discovery

Operational figures

Rolling 30 day window, updated live: 28 requests, 0 of them paid, 0 settlements, 0 USDC volume, 0 cached answers, rule set 2026.08.06.