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io.github.hebcal/hebcal

Official registry Archived Productivity

Model Context Protocol extension for Hebrew calendar

Source code Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http hebcal 'https://www.hebcal.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "hebcal": {
            "type": "http",
            "url": "https://www.hebcal.com/mcp"
        }
    }
}
NPM package @hebcal/mcp
Claude Code 
claude mcp add hebcal -- npx -y @hebcal/mcp@0.9.8
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "hebcal": {
            "command": "npx",
            "args": [
                "-y",
                "@hebcal/mcp@0.9.8"
            ]
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Hebcal 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.

Frequently asked questions

What is io.github.hebcal/hebcal?

Model Context Protocol extension for Hebrew calendar

How do I install io.github.hebcal/hebcal?

It runs as a remote server. In Claude Code: claude mcp add --transport http hebcal 'https://www.hebcal.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does io.github.hebcal/hebcal need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is io.github.hebcal/hebcal open source?

Yes. Its code is on GitHub under the BSD-2-Clause license.

Who maintains io.github.hebcal/hebcal?

It is published by hebcal. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.