Hebcal MCP
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Author: hebcalHebrew calendar MCP server by Hebcal. Jewish holidays, Shabbat candle lighting times, Havdalah, Torah readings, and date conversion.
Agent Configuration
.mcp.json
{
"mcpServers": {
"hebcal": {
"command": "npx",
"args": [
"-y",
"@hebcal/mcp"
]
}
}
}Features
- Bidirectional conversion between Gregorian and Hebrew dates
- Halachic Yahrzeit calculation with leap year support
- Complete list of Jewish holidays and observances by year
- Shabbat candle-lighting and Havdalah times by geographic location
- Weekly Torah portion with leyning details and special Shabbat info
- Daily Daf Yomi lookup with link to full Talmud text
Tools(7)
convert-gregorian-to-hebrewConverts a Gregorian (civil) date to a Hebrew date, returning the Hebrew year, month, day, gematriya representation, and leap year status
convert-hebrew-to-gregorianConverts a Hebrew date (day, month name, year) to a Gregorian date in YYYY-MM-DD format
yahrzeitCalculates Yahrzeit anniversary dates (day of death) according to the Hebrew calendar, returning a table of past and future dates spanning 22 years
torah-portionReturns the weekly Torah portion (parashat haShavua) for a given date, including Hebrew name, leyning summary, and special Shabbat designation
jewish-holidays-yearLists all Jewish holidays for a given Gregorian year with Hebrew dates and holiday categories
daf-yomiReturns the Daf Yomi (daily Talmud page) for a given date in English and Hebrew, with a link to read the text
shabbat-timesGenerates Shabbat and holiday candle-lighting and Havdalah times for a specified location and date range
Data Sources(2)
Free Jewish calendar and holiday web service providing holiday data, zmanim, Torah readings, and Hebrew date conversions
Core JavaScript library for Hebrew calendar calculations, holidays, and event generation
Try These Queries
What is the Hebrew date for March 15, 2026?When is the Yahrzeit for someone who passed on January 5, 2020?What is this week's Torah portion?What are the Shabbat candle-lighting times in Tel Aviv this week?List all Jewish holidays in 2026Setup Requirements
Dependencies
nodeNotes
No API keys required. Can also connect to the hosted remote endpoint at https://www.hebcal.com/mcp.
Known Limitations
- Candle-lighting times require precise geographic coordinates and an Olson timezone ID
- Does not provide general zmanim (prayer times, sunrise, sunset) beyond candle-lighting and Havdalah
- No support for alternative Jewish calendars such as Karaite or Ethiopian
hebcalhebrew-calendarjewish-holidaysshabbattorah-readingdates
Frequently Asked Questions
What is Hebcal MCP?
Hebrew calendar MCP server by Hebcal. Jewish holidays, Shabbat candle lighting times, Havdalah, Torah readings, and date conversion.
How do I install Hebcal MCP?
Add the server to your AI agent's config file (.mcp.json for Claude Code, .cursor/mcp.json for Cursor) with the command: npx -y @hebcal/mcp
What tools does Hebcal MCP provide?
Hebcal MCP provides 7 tools including: convert-gregorian-to-hebrew, convert-hebrew-to-gregorian, yahrzeit, torah-portion, jewish-holidays-year.
Where does Hebcal MCP get its data?
Hebcal MCP connects to data sources: Hebcal, @hebcal/core.