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lilambd Calendars — Festival Lookup
x402
lilambd Calendars — Festival Lookup is a paid API for AI agents from api.lilambd.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-11-06).
Returns a paginated list of religious and cultural festival dates across multiple calendar systems (Hebrew, etc.), sourced from Unicode CLDR data.
Price / call$0.005
Success—
StatusUnknown
How this service works
A crossing for play, feeling, language, science and computation — creating states that do not have names yet.
Output
A JSON object with a 'data' array of festival records (each containing date, name_en, calendar_id, festival_id, and calculation rule), plus count, limit, offset for pagination, and an attribution string crediting Unicode CLDR 49.
Example use cases
Scheduling around Jewish holidays
“I'm planning a product launch for Q1 2027 — can you pull the Hebrew calendar festivals so I know which dates to avoid?”
Building a multicultural holiday widget
“Fetch me the full list of festivals from the Hebrew calendar so I can display them in my app's holiday calendar section.”
Researching when Purim falls
“When exactly is Purim in 2027? Can you look it up from the Hebrew calendar festivals data?”
Technical details
Endpoint
GEThttps://api.lilambd.com/calendars/festivals?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need structured, authoritative festival and holiday date data across cultural calendar systems (especially Hebrew), sourced from Unicode CLDR. Prefer it over scraping Wikipedia or using generic date libraries when you need machine-readable holiday records with calculation rules and stable festival IDs for downstream scheduling or display logic.
Side effects
- Invalid or unsupported calendar_id returns empty data array
- Payment not provided or insufficient USDC results in HTTP 402
- Offset beyond total count returns empty data array with count 0
- Malformed query parameters may return a 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string | |
| additionalProperties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"data": [
{
"date": "2027-03-23",
"rule": "Hebrew month 13/14 (Nisan=1)",
"name_en": "Purim",
"calendar_id": "hebrew",
"festival_id": "purim"
}
],
"count": 1,
"limit": 20,
"offset": 0,
"attribution": "Unicode CLDR 49 ..."
}
}Tags
x402
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