Date diff

An MCP tool from the Calculators server, hosted on mcp.hjlabs.in.

The time between two dates: years, months and days (calendar-aware), plus total days, weeks, hours, and the weekdays between them.

Name on the gateway: math__date_diff · read-only.

Parameters

Name	Type	Description
`from` required	`string`	Start date, ISO "YYYY-MM-DD" or "today".
`to` required	`string`	End date, ISO or "today".

Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:

call_tool arguments

{
  "name": "math__date_diff",
  "arguments": {
    "from": "…",
    "to": "…"
  }
}

Or connect the Calculators server directly, which lists 28 tools including this one:

Run in your terminal

claude mcp add --transport http hj-math https://mcp.hjlabs.in/mcp/math \
  --header "Authorization: Bearer YOUR_API_KEY"

Use the date diff tool with from set to ….