Math & Numbers

Roman Numeral Converter

Convert between Arabic numbers and Roman numerals with validation and detailed results

text· Text resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/roman-numeral-converter' \
  -H 'Content-Type: application/json' \
  -d '{"input":"Enter an Arabic number (1-3999) or Roman numeral (e.g., MMXXIV)"}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/roman-numeral-converter

Parameters

Name	Type	Required	Description
input	text	Yes	Enter either an Arabic number or Roman numeral to convert

Response format

Text result

JSON

{
  "result": "Processed text content",
  "error": "Error message (optional)",
  "message": "Notification message (optional)",
  "metadata": {
    "key": "value"
  }
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-roman-numeral-converter": {
      "name": "roman-numeral-converter",
      "description": "Convert between Arabic numbers and Roman numerals with validation and detailed results",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=roman-numeral-converter",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "roman-numeral-converter",
    "arguments": {
  "input": "Enter an Arabic number (1-3999) or Roman numeral (e.g., MMXXIV)"
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

Browse tools Open tool

curl -X POST 'https://api.elysiatools.com/en/api/tools/roman-numeral-converter' \ -H 'Content-Type: application/json' \ -d '{"input":"Enter an Arabic number (1-3999) or Roman numeral (e.g., MMXXIV)"}'

Name

Type

Required

Description

input

text

Yes

Enter either an Arabic number or Roman numeral to convert

{ "mcpServers": { "elysiatools-roman-numeral-converter": { "name": "roman-numeral-converter", "description": "Convert between Arabic numbers and Roman numerals with validation and detailed results", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=roman-numeral-converter", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "roman-numeral-converter", "arguments": { "input": "Enter an Arabic number (1-3999) or Roman numeral (e.g., MMXXIV)" } } }