Age

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

Exact age (years, months, days) on a given date from a date of birth, plus total days lived, the next birthday and the weekday of birth.

Name on the gateway: math__age · read-only.

Parameters

Name	Type	Description
`birth_date` required	`string`	ISO date of birth.
`on`	`string`	The date to measure at. Default today (UTC).

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__age",
  "arguments": {
    "birth_date": "…"
  }
}

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 age tool with birth_date set to ….