#hebrew

Gematria and isopsephy as an API, computed locally and deterministically — turning words into the numeric sums of their letters. The hebrew endpoint computes Hebrew gematria: the standard value (Mispar Hechrachi) that adds the base value of each letter (alef 1, bet 2 … tav 400), the gadol value that counts the five final letters as 500–900, and the reduced digital root; for example שלום (shalom) is 376. The greek endpoint computes Greek isopsephy with the Milesian numeral system (alpha 1 … omega 800, plus the archaic stigma 6, koppa 90 and sampi 900), case-insensitively; for example λογος (logos) is 373. The english endpoint computes English gematria three ways — the ordinal or simple value (a 1 … z 26), the Pythagorean value that reduces each letter to a single digit 1–9, and the Sumerian value (ordinal × 6) — with the digital root; for example HELLO is 52 ordinal. Non-letter characters are ignored and unrecognised letters are listed. Everything is computed locally and deterministically, so it is instant and private. Ideal for word-game, puzzle, esoteric, study and language app developers, name-numerology and text-analysis tools, and Bible and classics study. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is letter-value gematria; for Roman numerals use a Roman-numeral API and for general number bases a base-conversion API.

api.oanor.com/gematria-api

The Jewish calendar as an API — powered by Hebcal. Convert any date between the Gregorian and Hebrew calendars (with the formatted Hebrew date and the Jewish events falling on that day), list the Jewish holidays of any year — major and minor festivals, Rosh Chodesh and special Shabbatot — each with its English and Hebrew name, date and category, and get this week's Shabbat candle-lighting time, Torah portion (parashah) and Havdalah time for any location by GeoNames id or coordinates. From Rosh Hashanah and Yom Kippur to Passover, Shavuot and Hanukkah, with Hebrew dates rendered in Hebrew script, it is ideal for calendar, scheduling, event, religious and cultural applications. A Jewish-calendar resource — distinct from secular public-holiday and Islamic prayer-time APIs. Open data from Hebcal (CC-BY 4.0 / GPL).

api.oanor.com/hebcal-api