About hebcal
hebcal is an MCP server extension for the Hebrew calendar and Jewish holidays. The repository is archived and read-only; the project states that the functionality has moved to hebcal/hebcal-api-go.
Key features
- 01Hebrew calendar MCP extension
- 02Jewish holiday calendar functionality
Use cases
- 01Access Hebrew calendar functionality through an MCP client
- 02Use Jewish holiday calendar features in an MCP-enabled workflow
MCP support
The project is described as a Model Context Protocol server for Hebrew calendar functionality. Its repository is archived, and the functionality has moved to hebcal/hebcal-api-go.
Configuration
Remote servers need no local install. Pick your client, then copy the config or install in one click.
https://www.hebcal.com/mcpclaude mcp add --transport http hebcal-hebcal https://www.hebcal.com/mcp{"mcpServers":{"hebcal-hebcal":{"type":"http","url":"https://www.hebcal.com/mcp"}}}Open in Cursor{"servers":{"hebcal-hebcal":{"type":"http","url":"https://www.hebcal.com/mcp"}}}Open in VS Code{"mcpServers":{"hebcal-hebcal":{"type":"http","url":"https://www.hebcal.com/mcp"}}}{"mcpServers":{"hebcal-hebcal":{"serverUrl":"https://www.hebcal.com/mcp"}}}Run commands in a terminal; paste JSON into the client’s MCP config and restart. Servers that need sign-in will prompt on first connect.
Tools
7| Parameter | Type | Required | Description |
|---|---|---|---|
| date | string | Yes | Gregorian date (in yyyy-MM-dd format) to convert |
Details
From the project READMEHebcal Jewish holidays and Hebrew calendar Model Context Protocol (MCP) server
This repository has moved. This functionality now lives at hebcal/hebcal-api-go. This repo is archived and read-only; please file issues and send pull requests there instead.
Hebcal (pronounced HEEB-kal, as in Hebrew calendar) is a free Jewish calendar and holiday web site.
Our mission is to increase awareness of Jewish holidays and to help Jews to be observant of the mitzvot.
Comments
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.