hebcal
Model Context Protocol extension for Hebrew calendar
Should I use this
Quality & Safety
Findings (6)
- LOWTool 'convert-gregorian-to-hebrew' doesn't follow camelCase/snake_casein convert-gregorian-to-hebrew
- LOWTool 'convert-hebrew-to-gregorian' doesn't follow camelCase/snake_casein convert-hebrew-to-gregorian
- LOWTool 'daf-yomi' doesn't follow camelCase/snake_casein daf-yomi
- LOWTool 'jewish-holidays-year' doesn't follow camelCase/snake_casein jewish-holidays-year
- LOWTool 'shabbat-times' doesn't follow camelCase/snake_casein shabbat-times
- LOWTool 'torah-portion' doesn't follow camelCase/snake_casein torah-portion
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"hebcal": {
"command": "npx",
"args": [
"@hebcal/mcp"
]
}
}
}Runnable packages
0.9.8stdioRemote endpoints
https://www.hebcal.com/mcpstreamable-httpWhat it can do
Tool inventory
Tools (7)
⚪convert-gregorian-to-hebrew(date)
Converts a Gregorian (civil) date to a Hebrew date (Jewish calendar)
Input Schema
{
"type": "object",
"properties": {
"date": {
"type": "string",
"description": "Gregorian date (in yyyy-MM-dd format) to convert"
}
},
"required": [
"date"
],
"additionalProperties": false
}⚪convert-hebrew-to-gregorian(day, month, year)
Converts a Hebrew date to a Gregorian (civil) date
Input Schema
{
"type": "object",
"properties": {
"day": {
"type": "integer",
"description": "Hebrew day of month"
},
"month": {
"type": "string",
"description": "Hebrew month name transliterated, like Elul or Tishrei"
},
"year": {
"type": "integer",
"description": "Hebrew year"
}
},
"required": [
"day",
"month",
"year"
],
"additionalProperties": false
}⚪daf-yomi(date)
Calculates the Daf Yomi (Babylonian Talmud) learning for a specified date
Input Schema
{
"type": "object",
"properties": {
"date": {
"type": "string",
"description": "Gregorian date in yyyy-MM-dd format"
}
},
"required": [
"date"
],
"additionalProperties": false
}🟢jewish-holidays-year(year)
Calculates a list of all Jewish holidays during a Gregorian (civil) year
Input Schema
{
"type": "object",
"properties": {
"year": {
"type": "integer",
"description": "Gregorian year"
}
},
"required": [
"year"
],
"additionalProperties": false
}⚪shabbat-times(latitude, longitude, tzid, startDate, endDate)
Generates Shabbat and holiday candle-lighting and Havdalah times for a given location and date range
Input Schema
{
"type": "object",
"properties": {
"latitude": {
"type": "number",
"description": "Latitude as decimal, valid range -90 to +90 (e.g. 41.85003)"
},
"longitude": {
"type": "number",
"description": "Longitude as decimal, valid range -180 to +180 (e.g. -87.65005)"
},
"tzid": {
"type": "string",
"description": "Olson timezone ID (e.g. \"America/Chicago\", \"Europe/Moscow\")"
},
"startDate": {
"type": "string",
"description": "Start date in yyyy-MM-dd format"
},
"endDate": {
"type": "string",
"description": "End date in yyyy-MM-dd format"
}
},
"required": [
"latitude",
"longitude",
"tzid",
"startDate",
"endDate"
],
"additionalProperties": false
}⚪torah-portion(date, il)
Calculates the weekly Torah portion (also called parashat haShavua) for a specified date
Input Schema
{
"type": "object",
"properties": {
"date": {
"type": "string",
"description": "Gregorian date in yyyy-MM-dd format"
},
"il": {
"type": "boolean",
"description": "True if in Israel, false for Diaspora"
}
},
"required": [
"date",
"il"
],
"additionalProperties": false
}⚪yahrzeit(date, afterSunset)
Calculates the Yahrzeit, the anniversary of the day of death of a loved one, according to the Hebrew calendar for a specified date
Input Schema
{
"type": "object",
"properties": {
"date": {
"type": "string",
"description": "Gregorian date of death (in yyyy-MM-dd format)"
},
"afterSunset": {
"type": "boolean",
"description": "after sunset"
}
},
"required": [
"date",
"afterSunset"
],
"additionalProperties": false
}Community
Evidence