Datecalc
FreeNot checkedEnables users to perform date arithmetic, compute differences, add durations, and retrieve calendar facts via natural language or direct tool calls.
About
Enables users to perform date arithmetic, compute differences, add durations, and retrieve calendar facts via natural language or direct tool calls.
README
Date calculator MCP.
Part of Pipeworx — an MCP gateway connecting AI agents to 1394+ live data sources.
Tools
| Tool | Description |
|---|---|
date_diff |
Compute the difference between two dates/times (UTC). Returns the signed difference in ms, seconds, minutes, hours, days and weeks, plus a human-readable summary. Accepts ISO-8601 (e.g. "2026-01-01" or "2026-01-01T12:00:00Z"). |
add_duration |
Add (or subtract, with negatives) a duration to a date and return the new UTC date/time. Provide any of years/months/weeks/days/hours/minutes/seconds. |
date_info |
Calendar facts about a date (UTC): weekday, day-of-year, ISO week number, quarter, whether the year is a leap year, and days in that month. |
Quick Start
Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):
{
"mcpServers": {
"datecalc": {
"url": "https://gateway.pipeworx.io/datecalc/mcp"
}
}
}
Or connect to the full Pipeworx gateway for access to all 1394+ data sources:
{
"mcpServers": {
"pipeworx": {
"url": "https://gateway.pipeworx.io/mcp"
}
}
}
Using with ask_pipeworx
Instead of calling tools directly, you can ask questions in plain English:
ask_pipeworx({ question: "your question about Datecalc data" })
The gateway picks the right tool and fills the arguments automatically.
More
License
MIT
Installing Datecalc
This server has no published package — it is built from source. Open the repository and follow its README.
▸ github.com/pipeworx-io/mcp-datecalcFAQ
Is Datecalc MCP free?
Yes, Datecalc MCP is free — one-click install via Unyly at no cost.
Does Datecalc need an API key?
No, Datecalc runs without API keys or environment variables.
Is Datecalc hosted or self-hosted?
A hosted option is available: Unyly runs the server in the cloud, no local setup required.
How do I install Datecalc in Claude Desktop, Claude Code or Cursor?
Open Datecalc on unyly.org, pick your client tab (Claude Desktop, Claude Code, Cursor) and press Install — the config is generated automatically, no JSON editing.
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