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lilambd Calendars — Weekday Names Lookup
x402
lilambd Calendars — Weekday Names Lookup is a paid API for AI agents from api.lilambd.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-11-04).
Returns localized weekday names (e.g. Monday in Japanese, French, Arabic) from the Unicode CLDR dataset, with pagination support.
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
Returns a paginated JSON array of weekday name objects, each containing the localized name string, locale code, a short day_key (e.g. 'mon'), and ISO weekday number (1=Monday). Also includes total count, limit, offset, and a Unicode CLDR version attribution string.
Example use cases
Localized calendar UI for Japanese users
“I'm building a calendar app and need to show weekday headers in Japanese — can you fetch the localized day names for the 'ja' locale from Unicode CLDR?”
Weekday translation for multilingual scheduler
“My scheduling tool needs to display Monday through Sunday in French. Can you pull the weekday names for the 'fr' locale so I can populate the day labels?”
ISO weekday number to Arabic name mapping
“For an Arabic-language planner I need to know what each ISO weekday number maps to in Arabic — please get the full list of weekday names for the 'ar' locale.”
Technical details
Endpoint
GEThttps://api.lilambd.com/calendars/weekday-names?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need authoritative, Unicode CLDR-sourced localized weekday names for a specific locale, especially for calendar UIs, scheduling tools, or i18n data pipelines. It is preferable to hardcoding translations or using general-purpose translation APIs because it draws directly from the CLDR standard used by browsers and operating systems worldwide.
Side effects
- Unsupported or malformed locale code returns empty results or error
- Pagination offset beyond available records returns empty data array
- Missing required query parameters may return a 400 Bad Request
- Rate limiting or payment failure (x402) returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string | |
| additionalProperties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"data": [
{
"name": "月曜日",
"locale": "ja",
"day_key": "mon",
"iso_weekday": 1
}
],
"count": 1,
"limit": 20,
"offset": 0,
"attribution": "Unicode CLDR 49 ..."
}
}Tags
x402
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