Date Math Calculator
com.apished/date-math-calculator
Date arithmetic: day differences, business days, age, leap years, day-of-week, add/subtract.
This endpoint completed initialize and tools/list. No tool was called.
- Rank
- #1479
- Score
- 82
- Tool tokens
- 674
- Tools
- 6
Tools
Token cost is the o200k count of the tools list JSON, including schemas, before any tool is called.
datemath_add
Adds years/months/days to date. years/months are applied together with end-of-month clamping — e.g. 2026-01-31 + 1 month = 2026-02-28, not an overflowed 2026-03-03. days is then applied as plain calen
datemath_age
Age in whole years as of asOf (optional, defaults to the current UTC date). A Feb-29 birthDate is treated as falling on March 1 in a non-leap asOf year.
datemath_businessdays
Counts days in [from, to] (inclusive on both ends) whose weekday is in weekdays (default mon-fri) and which aren't in holidays.
datemath_dayofweek
Day of the week for date: both the weekday name and its ISO 8601 weekday number (1=Monday..7=Sunday).
datemath_diff
Day difference between two YYYY-MM-DD dates: to minus from, in whole days. Negative if to is before from.
datemath_leapyear
Checks whether year is a leap year in the Gregorian calendar.
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