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MCP DateTime

A TypeScript implementation of a Model Context Protocol (MCP) server that provides datetime and timezone information to agentic systems and chat REPLs.

Overview

MCP DateTime is a simple server that implements the Model Context Protocol to provide datetime and timezone information to AI agents and chat interfaces. It allows AI systems to:

• Get the current time in the local system timezone
• Get the current time in any valid timezone
• List all available timezones
• Access timezone information through URI resources

Installation

From npm

npm install -g mcp-datetime

From source

git clone https://github.com/odgrmi/mcp-datetime.git
cd mcp-datetime
npm install
npm run build

Usage

Command Line

MCP DateTime can be run in two modes:

1. Standard I/O Mode (Default)

This mode is ideal for integrating with AI systems that support the MCP protocol through standard input/output:

mcp-datetime

2. Server-Sent Events (SSE) Mode

This mode starts an HTTP server that provides SSE transport for the MCP protocol:

mcp-datetime --sse

You can also specify a custom port and URI prefix:

mcp-datetime --sse --port=8080 --prefix=/api/datetime

Environment Variables

• PORT: Sets the port for SSE mode (default: 3000)
• URI_PREFIX: Sets the URI prefix for SSE mode (default: none)

Available Tools

MCP DateTime provides the following tools:

get-current-time

Returns the current time in the system's local timezone.

get-current-timezone

Returns the current system timezone.

get-time-in-timezone

Returns the current time in a specified timezone.

Parameters:

• timezone: The timezone to get the current time for (e.g., "America/New_York")

list-timezones

Returns a list of all available timezones.

Resource URIs

MCP DateTime also provides access to timezone information through resource URIs:

datetime://{timezone}

Returns the current time in the specified timezone.

Example: datetime://America/New_York

datetime://list

Returns a list of all available timezones.

Common Timezones

The following common timezones are always available:

• UTC
• Europe/London
• Europe/Paris
• Europe/Berlin
• America/New_York
• America/Chicago
• America/Denver
• America/Los_Angeles
• Asia/Tokyo
• Asia/Shanghai
• Asia/Kolkata
• Australia/Sydney
• Pacific/Auckland

SSE Endpoints

When running in SSE mode, the following endpoints are available:

• /sse: SSE connection endpoint
• /message: Message endpoint for client-to-server communication
• /info: Basic server information

If a URI prefix is specified, it will be prepended to all endpoints.

Integration with AI Systems

MCP DateTime can be integrated with AI systems that support the Model Context Protocol. This allows AI agents to access accurate timezone and datetime information.

Development

Prerequisites

• Node.js 14.16 or higher
• npm

Setup

git clone https://github.com/odgrim/mcp-datetime.git
cd mcp-datetime
npm install

Build

npm run build

Run in Development Mode

npm run dev        # Standard I/O mode
npm run dev:sse    # SSE mode

License

This project is licensed under the Mozilla Public License 2.0 - see the LICENSE file for details.