Date Math Calculator MCP Server

by apished Your server? Claim it

answering

Date Math Calculator is answering right now. Last checked 15 min ago. It exposes 6 tools.

Date arithmetic: day differences, business days, age, leap years, day-of-week, add/subtract.

Uptime history 14 days of history

14 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

184 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Date Math Calculator every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 15 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add date-math-calculator --transport http https://apished.com/mcp/v1/datemath

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "date-math-calculator": {
      "url": "https://apished.com/mcp/v1/datemath"
    }
  }
}

~/.codex/config.toml

[mcp_servers.date-math-calculator]
url = "https://apished.com/mcp/v1/datemath"

.cursor/mcp.json

{
  "mcpServers": {
    "date-math-calculator": {
      "url": "https://apished.com/mcp/v1/datemath"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "date-math-calculator": {
      "url": "https://apished.com/mcp/v1/datemath"
    }
  }
}

Available tools 6

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

datemath

datemath_add

Adds years/months/days to date. years/months are applied together with end-of-month clamping — e.g. 2026-01-31 + 1 month = 2026-02-28, not an overflowed 2026-03-03. days is then applied as plain calendar-day arithmetic.

datemath_age

Age in whole years as of asOf (optional, defaults to the current UTC date). A Feb-29 birthDate is treated as falling on March 1 in a non-leap asOf year.

datemath_businessdays

Counts days in [from, to] (inclusive on both ends) whose weekday is in weekdays (default mon-fri) and which aren't in holidays.

datemath_dayofweek

Day of the week for date: both the weekday name and its ISO 8601 weekday number (1=Monday..7=Sunday).

datemath_diff

Day difference between two YYYY-MM-DD dates: to minus from, in whole days. Negative if to is before from.

datemath_leapyear

Checks whether year is a leap year in the Gregorian calendar.

Endpoints

URL	Transport	State	Latency	Checked
https://apished.com/mcp/v1/datemath	streamable-http	answering	196 ms	15 min ago

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Date Math Calculator — questions

Answers built from our own checks of this server.

What can Date Math Calculator do?

It exposes 6 tools, read directly from the server on our last check. Among them: datemath_add, datemath_age, datemath_businessdays, datemath_dayofweek, datemath_diff, datemath_leapyear. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Date Math Calculator working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 184 ms. The bar chart above shows every period we have measured.

How do I connect Date Math Calculator?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Date Math Calculator need an API key?

No. Date Math Calculator completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Date Math Calculator?

It answers our handshake in 184 ms on average, which is faster than 75% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.