Tool detail
Holiday Calendar API
Checks whether a given ISO date is an official public holiday in a supported country or subdivision.
Categories: Utilities
Use when
- check if a date is a public holiday in a country
- verify a holiday before scheduling a payment or delivery
- check a regional holiday, e.g. a German state
Not for
- not a full year's holiday list (see the /list endpoint)
- not business-day counting or date math (separate endpoints)
Inputs
GET query params: country (ISO 3166-1 alpha-2, one of 36 supported, required), date (ISO date, required); optional: language (2-letter), subdivision (e.g. DE-BE)
Inputs undocumented: enum larger than 32 values
Endpoint
- Method
GET- URL
https://holidays.use.x402atlas.com/check
Payment
- Protocol
- x402
- Listed price
- 0.005 USDC per call on Base
- Payment method
- exact
- Network
- eip155:8453
- Asset
- 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.
Source
- Directory
- Coinbase x402 Bazaar
- Record
- GET https://holidays.use.x402atlas.com/check
- Retrieved
- 2026-09-30T20:37:07.382Z
- Catalog file SHA-256
6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524- Catalog built
- 2026-09-30T22:31:58.034Z