Age Calculator Skill

Overview

Age Calculator works by analyzing the date of birth provided and calculating the age. It uses advanced algorithms to calculate the age based on the date of birth and returns the calculated age.

Live Test Age Calculator Skill Skill →

The tool

Once your client is connected to the VerveKit server, this appears in its tool list as AgeCalculatorSkill. It is read-only and open-world — it fetches and never mutates anything on your side — so most clients call it without asking you to confirm.

{
  "name": "AgeCalculatorSkill",
  "arguments": {
    "dob": "1990-08-02"
  }
}

You do not name the tool yourself; the model picks it. Asking about 1990-08-02 in the terms this skill covers is enough for it to reach for AgeCalculatorSkill on its own — naming it explicitly also works, and is the way to force the call.

Connecting

One server URL covers every skill in the catalog, including this one. Authorization is OAuth: the client opens a browser once, and there is no key to paste into a config file.

{
  "mcpServers": {
    "vervekit": {
      "url": "https://api.vervekit.com/v1/mcp"
    }
  }
}

https://api.vervekit.com/v1/mcp

Per-client setup — Claude, Cursor, VS Code, ChatGPT — is on the MCP setup page.

Arguments

These are the properties on the tool's inputSchema, so a well-behaved client validates them before the call is made. Premium arguments are accepted on every plan but only take effect on plans that include them.

What the model gets back

The result carries a structuredContent object matching the tool's declared outputSchema, so a client reads fields without parsing prose. status is "ok" and error is null on success; a null field means the value was not available for that input, not that the call failed.

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{
  "status": "ok",
  "error": null,
  "data": {
    "dob": "1990-01-01",
    "age_breakdown": {
      "years": 35,
      "months": 431,
      "weeks": 1876,
      "days": 13133,
      "hours": 315208,
      "minutes": 18912499,
      "seconds": 1134749976
    },
    "age_words": {
      "years": "thirty-five",
      "ordinal": "thirty-fifth",
      "full": "thirty-five years old",
      "locale": "en-US"
    },
    "timezone": "America/Chicago",
    "locale": "en-US",
    "next_birthday": {
      "months": 0,
      "weeks": 2,
      "days": 15,
      "hours": 367,
      "minutes": 22060,
      "seconds": 1323623
    },
    "insights": {
      "generation": "Millennial",
      "zodiacSign": "Capricorn",
      "chineseZodiac": "Horse",
      "birthstone": "Garnet",
      "dayOfWeekBorn": "Monday",
      "isLeapYearBirth": false,
      "milestones": {
        "canVoteUS": true,
        "canDrinkUS": true,
        "canRentCarUS": true,
        "seniorDiscount": false
      }
    }
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Failure modes

Errors come back as tool errors carrying a sentence the model can act on, not a bare status code. Error handling covers the full list.

A call costs 2 credits each time the tool actually runs; a model that reasons about the tool without calling it costs nothing.

Use cases

User Onboarding Verification

When a new user registers, verify their exact age in years from their birth date before activating account features.

Birthday Campaign Scheduling

Marketing platforms track the countdown to each customer's next birthday in days and hours to trigger timely promotional discount codes.

Pediatric Patient Intake

Health record systems record patient age broken down into months and weeks for infants who need age-specific developmental checks.

Profile Milestone Cards

Display a user's age written out in words on community profile cards and count down to their next birthday celebration.

Other ways to use Age Calculator Skill

Set up Age Calculator Skill on VerveKit, or reach the same source a different way. Your VerveKit account and credits work on all of them — one key, one balance.

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