{"id":"iso-date-is-leap-year","version":"1.0.0","description":"Test whether a proleptic Gregorian calendar year is a leap year.","supported_operations":["iso date is leap year","leap year check","is year a leap year"],"unsupported_operations":["Julian calendar","lunar calendars","timezones"],"semantics":["year is a JSON integer from 1 to 9999.","Leap year rule: year % 4 == 0 && (year % 100 != 0 || year % 400 == 0). For example 2000 and 2024 are leap years; 1900 and 2023 are not."],"limits":{"year_min":1,"year_max":9999},"pricing":{"status":"unpriced","charge_usd":null},"input_schema":{"type":"object","additionalProperties":false,"required":["year"],"properties":{"year":{"type":"integer","minimum":1,"maximum":9999}}},"output_schema":{"type":"object","additionalProperties":false,"required":["leap"],"properties":{"leap":{"type":"boolean"}}},"examples":[{"input":{"year":2024},"output":{"leap":true}},{"input":{"year":1900},"output":{"leap":false}}],"execute_url":"/v1/tools/iso-date-is-leap-year/versions/1.0.0/execute"}