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Calendar Systems Age Profile
x402
Calendar Systems Age Profile is a paid API for AI agents from calendar-systems.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-27).
Returns a comprehensive age profile for a birth date including years/months/days lived, Korean/East Asian ages, next birthday with leap-day handling, and Chinese zodiac.
Price / call$0.02
Success—
StatusUnknown
How this service works
Age in years, months, days and days lived, Korean and East Asian ages, next birthday with leap-day rules, and zodiac.
Output
A JSON object containing: age broken down into years, months, and remaining days; total months, weeks, and days lived; international age; Korean year age and Korean traditional age; birth weekday; next birthday date and weekday; days until next birthday; whether today is the birthday; whether the birth date is a leap day; next birthday if March 1 is used for leap-day birthdays; Chinese zodiac animal, element, and year; and the Julian day number of the birth date.
Example use cases
Korean age lookup for a user
“My user was born on 1995-03-22 — can you tell them their Korean age and traditional Korean age as of today, plus what their Chinese zodiac animal and element are?”
Leap day birthday next occurrence
“I was born on February 29, 1992 — when is my next official birthday and which weekday will it fall on? And how many days until then?”
Total days and weeks lived milestone
“Tell me exactly how many days and weeks I've been alive as of today — my birthday is 1985-11-04. Also include my Chinese zodiac sign.”
Technical details
Endpoint
GEThttps://calendar-systems.x402tookit.com/age-profile?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a rich, culturally-aware age profile that goes beyond simple year counting — especially when Korean or East Asian age conventions, Chinese zodiac information, leap-day birthday handling, or total days/weeks lived are needed. Prefer this over generic date-difference utilities when the user wants multiple age representations in one call.
Side effects
- Missing required 'birth' query parameter returns an error
- Invalid date format (not YYYY-MM-DD) causes a parse error
- Future birth dates may return unexpected or null values
- Invalid 'asOf' reference date format returns an error
- Network or payment failure returns a 402 or 5xx response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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