Roman Numeral Skill

Overview

Roman Numeral Converter works by converting numbers to Roman numerals using standard notation (I, V, X, L, C, D, M) or converting Roman numerals back to numbers. Supports numbers 1-3999 and validates Roman numeral syntax.

The tool

Once your client is connected to the VerveKit server, this appears in its tool list as RomanNumeralSkill. 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": "RomanNumeralSkill",
  "arguments": {
    "number": "2024"
  }
}

You do not name the tool yourself; the model picks it. Asking about 2024 in the terms this skill covers is enough for it to reach for RomanNumeralSkill 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
`number`Required	integer	The number to convert to Roman numerals range 1–3999

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": {
    "number": 2024,
    "roman": "MMXXIV",
    "breakdown": {
      "M": 2,
      "X": 2,
      "IV": 1
    }
  }
}

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
`number`	number	`2024`	The converted number from Roman numeral input
`roman`	string	`MMXXIV`	The original Roman numeral provided for conversion
`breakdown`	object	`{…}`	Object containing Roman numeral components and their counts
`breakdown.M`Premium	number	`2`	Count of M (1000) symbols in breakdown
`breakdown.X`Premium	number	`2`	Count of X (10) symbols in breakdown
`breakdown.IV`Premium	number	`1`	Count of IV (4) subtractive pairs in breakdown

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

Document Formatting: Convert numbers to Roman numerals for page numbering, chapter headings, or formal document sections
Historical Data: Convert Roman numeral dates and numbers from historical documents into modern numeric format
Educational Tools: Teach Roman numeral systems by providing conversions and detailed breakdowns of numeral components
Content Generation: Generate Roman numerals for lists, outlines, or hierarchical structures in generated content

Other ways to use Roman Numeral Skill

Set up Roman Numeral 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 →