Lifestyle

Hebcal

Convert between Gregorian and Hebrew calendars, find Jewish holidays, Shabbat times, and Torah portions.

Connects to Hebcal's Hebrew calendar service. Muse can convert dates between calendars, show Jewish holidays for any year, calculate Shabbat candle-lighting times for your location, find weekly Torah portions, and track Yahrzeit anniversaries.

Try asking Muse: "What time should I light Shabbat candles this Friday in New York?"

Working now?

Working

Worked last 7 days

100% of checks

How to get it

Extra setup

Account

No account needed

Price

Not stated

Source: Found in the official MCP Registry (io.github.hebcal/hebcal) · First listed September 25, 2026

Last 24 hours

Each bar is one check, every 15 minutes. Green means it answered. Last checked 50 min ago.

Is it safe to connect?

What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.

Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.

musedirectory.ai is not part of Meta. More about how Muse handles your information

How to add it to Muse

Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Paste this into Muse

Use Hebcal to help me. It is a free service with an MCP server at https://www.hebcal.com/mcp. It does not need an API key. Ask me before you share anything with it.

Open Muse

https://www.hebcal.com/mcp

Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.

Technical details: safety screening, tools, response time and recent checks

Response time at the last check: 371ms. Worked in 100% of checks over 30 days.

Screening · September 25, 2026

Screened, no issues found

MCP handshake

Pass

Answered in 386ms

Domain against threat feeds (Cloudflare security DNS)

Pass

www.hebcal.com not flagged

Published packages against the OSV malicious-package database

Pass

No malicious-package advisories

Hidden instructions or invisible characters in tool text

Pass

7 tools read, nothing found

Inputs asking for passwords, card numbers or seed phrases

Pass

None found

Domain and redirects

Pass

No redirects off the domain

AI review of purpose and tool behavior

Pass

No concerns

Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.

Tools · 7

convert-gregorian-to-hebrewConverts a Gregorian (civil) date to a Hebrew date (Jewish calendar)

convert-hebrew-to-gregorianConverts a Hebrew date to a Gregorian (civil) date

daf-yomiCalculates the Daf Yomi (Babylonian Talmud) learning for a specified date

jewish-holidays-yearCalculates a list of all Jewish holidays during a Gregorian (civil) year

shabbat-timesGenerates Shabbat and holiday candle-lighting and Havdalah times for a given location and date range

torah-portionCalculates the weekly Torah portion (also called parashat haShavua) for a specified date

yahrzeitCalculates the Yahrzeit, the anniversary of the day of death of a loved one, according to the Hebrew calendar for a specified date

Recent checks

2026-09-28 08:46:01live · HTTP 200371ms

2026-09-28 06:30:52live · HTTP 200983ms

2026-09-28 04:01:06live · HTTP 200301ms

2026-09-28 01:45:57live · HTTP 200289ms

2026-09-27 23:30:49live · HTTP 200880ms

2026-09-27 21:01:12live · HTTP 200707ms

2026-09-27 18:46:00live · HTTP 200784ms

2026-09-27 16:31:04live · HTTP 200888ms

2026-09-27 14:16:37live · HTTP 2002947ms

2026-09-27 12:01:16live · HTTP 2001163ms

2026-09-27 09:46:02live · HTTP 2002624ms

2026-09-27 07:16:32live · HTTP 200883ms

Link

https://www.hebcal.com/mcp

Questions about Hebcal in Muse

How do I connect Hebcal to Muse?

Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Hebcal to help me. It is a free service with an MCP server at https://www.hebcal.com/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Is Hebcal working right now?

At the last check (September 28, 2026, 08:46 UTC) the endpoint was working, answering in 371ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.

Is Hebcal safe to connect to Muse?

It was screened on September 25, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.

What can Hebcal do in Muse?

It exposes 7 tools, including convert-gregorian-to-hebrew, convert-hebrew-to-gregorian, daf-yomi, jewish-holidays-year. For example, you could ask Muse: "What time should I light Shabbat candles this Friday in New York?"

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This listing was added from public sources (Found in the official MCP Registry (io.github.hebcal/hebcal)). If you build Hebcal, claim it to correct the details and get your badge.

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<a href="https://musedirectory.ai/connector/hebcal"><img src="https://musedirectory.ai/badge/hebcal.svg" alt="Hebcal on musedirectory.ai" width="236" height="40"></a>

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