Birthstone Lookup Skill

Overview

Perfect for jewelry applications, astrology tools, gift recommendation engines, or any application that needs accurate birthstone data. Returns both traditional and modern birthstone options for each month.

Live Test Birthstone Lookup Skill Skill →

The tool

Once your client is connected to the VerveKit server, this appears in its tool list as BirthstoneLookupSkill. 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.

Tool call

{
  "name": "BirthstoneLookupSkill",
  "arguments": {
    "month": "5"
  }
}

You do not name the tool yourself; the model picks it. Asking about 5 in the terms this skill covers is enough for it to reach for BirthstoneLookupSkill 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"
    }
  }
}

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.

Argument	Type	Description
`month`Required	string	The month number (1-12) or name `12345678`+16

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.

Result

{
  "status": "ok",
  "error": null,
  "data": {
    "count": 1,
    "birthstones": [
      {
        "month": 5,
        "monthName": "May",
        "primaryStone": "Emerald",
        "alternateStones": [
          "Chrysoprase",
          "Agate"
        ],
        "color": "Green",
        "meaning": "Rebirth, love, fertility",
        "zodiacSigns": [
          "Taurus",
          "Gemini"
        ],
        "hardness": 7.5,
        "mineralFamily": "Beryl",
        "anniversaryYear": 55
      }
    ]
  }
}

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.

Field	Type	Example	Description
`count`	number	`1`	Number of months returned
`birthstones`	array[1]		The birthstones for each month requested
`birthstones.0.month`	number	`5`	Birth month number from 1 to 12
`birthstones.0.monthName`	string	`May`	Full name of the birth month
`birthstones.0.primaryStone`	string	`Emerald`	Primary gemstone for the month
`birthstones.0.alternateStones`Premium	array	`["Chrysoprase","Agate"]`	Alternate gemstones associated with month
`birthstones.0.color`	string	`Green`	Traditional color associated with stone
`birthstones.0.meaning`Premium	string	`Rebirth, love, fertility`	Symbolism and meaning of the birthstone
`birthstones.0.zodiacSigns`	array	`["Taurus","Gemini"]`	Zodiac signs associated with month
`birthstones.0.hardness`Premium	number	`7.5`	Mohs hardness rating of gemstone
`birthstones.0.mineralFamily`Premium	string	`Beryl`	Mineral classification family
`birthstones.0.anniversaryYear`Premium	number	`55`	Anniversary year associated with stone

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.

Status	What it means
`400` / `422`	The arguments did not validate. The message names the offending one.
`401`	The OAuth session is invalid or expired — reconnect the server.
`403`	Blocked by a key restriction or an IP allow-list. Never a bad identity.
`404`	This skill is not part of VerveKit. Check the catalog.
`429`	Out of credits, or a brief rate limit. The message tells them apart.

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

Jewelry E-commerce: Display relevant birthstone options for gift recommendations
Astrology Applications: Show birthstones associated with zodiac signs
Gift Finder Tools: Suggest personalized gemstone gifts based on birth month
Educational Content: Provide gemstone information for learning applications

Other ways to use Birthstone Lookup Skill

Set up Birthstone Lookup 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.

Call it as a REST APIOne HTTPS endpoint and an x-api-key header, with SDKs for Node, Python and .NET.APIVerve →Reference →

Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.VerveSheets →Reference →

Ground an agent on itA cited, machine-checkable fact your model can't produce on its own.VerveContext →Reference →