Time Server

by One Shot Ship

A free, hosted MCP server providing accurate time and timezone tools for Claude Code, Claude Desktop, and Cowork.

Setup

Claude Code

claude mcp add time-server https://one-shot-ship-api.onrender.com/mcp --transport http

With timezone hint (recommended):

claude mcp add time-server https://one-shot-ship-api.onrender.com/mcp \
  --transport http \
  --header "X-Timezone: America/New_York"

Or install as a plugin:

/plugin install oss-mcp-time

Claude Desktop / Cowork

Add this to your claude_desktop_config.json:

{
  "mcpServers": {
    "time-server": {
      "command": "npx",
      "args": ["-y", "mcp-remote",
        "https://one-shot-ship-api.onrender.com/mcp"]
    }
  }
}

Config file location:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

Requires Node.js 18+. The mcp-remote package is downloaded automatically on first use.

Restart Claude Desktop after saving. Works with Cowork sessions too.

Replace America/New_York with your IANA timezone.

Available Tools

get_current_time

Returns current time, date, UTC offset, and DST status for any IANA timezone.

Parameters:

Parameter	Required	Description
timezone	Yes	IANA timezone string (e.g., America/New_York)

Example response:

{
  "datetime": "2026-03-02T14:30:00",
  "timezone": "America/New_York",
  "utc_offset": "-05:00",
  "is_dst": false
}

convert_time

Converts a time from one timezone to another.

Parameters:

Parameter	Required	Description
source_timezone	Yes	Source IANA timezone
time	Yes	Time in HH:MM format
target_timezone	Yes	Target IANA timezone
date	No	Date in YYYY-MM-DD format (defaults to today)

Example response:

{
  "source": "14:00",
  "target": "19:00",
  "source_timezone": "America/New_York",
  "target_timezone": "Europe/London",
  "utc_offset_source": "-05:00",
  "utc_offset_target": "+00:00"
}

Why?

Claude Code /cowork (remote) sessions run on Anthropic's infrastructure, not your machine. Local MCP servers like mcp-server-time aren't accessible. This hosted server solves that.

Self-Hosting

git clone https://github.com/501336North/oss-mcp-time.git
cd oss-mcp-time
npm install
npm run build
npm start

License

MIT