mcp-simple-timeserver MCP Server

MCP Simple Timeserver

One of the strange design decisions Anthropic made was depriving Claude of timestamps for messages sent by the user in claude.ai or current time in general. Poor Claude can't tell what time it is! mcp-simple-timeserver is a simple MCP server that fixes that.

Available Tools

This server provides the following tools:

Tool	Description
`get_local_time`	Returns the current local time, day of week, and timezone from the user's machine
`get_utc`	Returns accurate UTC time from an NTP time server
`get_current_time`	Returns current UTC time with optional calendar conversions (see below)

Calendar Support via `get_current_time`

The get_current_time tool accepts an optional calendar parameter with a comma-separated list of calendar formats:

Calendar	Description
`unix`	Unix timestamp (seconds since 1970-01-01)
`isodate`	ISO 8601 week date (e.g., `2026-W03-6`)
`hijri`	Islamic/Hijri lunar calendar
`japanese`	Japanese Era calendar (returns both English and Kanji)
`hebrew`	Hebrew/Jewish calendar (returns both English and Hebrew, includes holidays)
`persian`	Persian/Jalali calendar (returns both English and Farsi)

Example: get_current_time(calendar="unix,hijri") returns UTC time plus Unix timestamp and Hijri date.

All tools (except get_local_time) use accurate time from NTP servers. If NTP is unavailable, they gracefully fall back to local server time with a notice.

Installation

Installing via Smithery

To install Simple Timeserver for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install mcp-simple-timeserver --client claude

Manual Installation

First install the module using:

pip install mcp-simple-timeserver

Then configure in MCP client - the Claude desktop app.

Under Mac OS this will look like this:

"mcpServers": {
  "simple-timeserver": {
    "command": "python",
    "args": ["-m", "mcp_simple_timeserver"]
  }
}

Under Windows you have to check the path to your Python executable using where python in the cmd (Windows command line).

Typical configuration would look like this:

"mcpServers": {
  "simple-timeserver": {
    "command": "C:\\Users\\YOUR_USERNAME\\AppData\\Local\\Programs\\Python\\Python311\\python.exe",
    "args": ["-m", "mcp_simple_timeserver"]
  }
}

Web Server Variant

This project also includes a network-hostable version that can be deployed as a standalone web server. For instructions on how to run and deploy it, please see the Web Server Deployment Guide.

Or you can simply use my server by adding it under https://mcp.andybrandt.net/timeserver to Claude and other tools that support MCP.