MCP server providing Jewish prayer times (zmanim) calculations for any location worldwide.
Most developer tooling work still happens through a UI a human drives. Zmanim MCP server moves it into the conversation instead. MCP server providing Jewish prayer times (zmanim) calculations for any location worldwide.
This MCP server provides tools to calculate various Jewish prayer times and astronomical times for any location worldwide. It uses the python-zmanim library, which is a Python port of the KosherJava project, implementing accurate astronomical calculations based on the NOAA algorithm.
Installation goes through your MCP client rather than a global install: point it at zmanim-mcp-server on PyPI and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.
The server publishes 2 tools. What each one is for:
Calculations — The Calculations tool exposed by this serverDependencies — The Dependencies tool exposed by this serverAmong the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Zmanim's toolset — Calculations, Dependencies — is a fair guide to whether it matches your workflow. It is maintained by ariroffe72; worth a glance at recent repository activity before you build anything load-bearing on it.
This entry was verified against Zmanim's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.
| Tool | What it does |
|---|---|
| Calculations | The Calculations tool exposed by this server. |
| Dependencies | The Dependencies tool exposed by this server. |
{
"mcpServers": {
"zmanim": {
"command": "uvx",
"args": ["zmanim-mcp-server"]
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
Kill hallucinated APIs — version-accurate, up-to-date library documentation injected straight into context.
Microsoft's official browser automation server — drive a real browser through the accessibility tree, no screenshots needed.
GitHub's official server — repos, issues, pull requests, Actions and code security, straight from your assistant.
Issue tracking at the speed of conversation — Linear's official hosted server with OAuth and zero install.
Local repository surgery — status, diffs, commits, branches and history for any repo on disk.
Timezone sanity for AI — current time anywhere and correct conversions, without the model doing date math.