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Integer to Roman Numeral Converter
x402
Integer to Roman Numeral Converter is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Converts a positive integer into its Roman numeral representation for display formatting, outlines, and labels.
Price / call$0.001
Success—
StatusUnknown
How this service works
Integer → Roman numerals. Use for outlines, chapter labels, or display formatting in agent UIs. Returns a Roman numeral for a positive integer. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.
Output
Returns a JSON object containing the Roman numeral string representation of the input integer (e.g., 14 → 'XIV', 2024 → 'MMXXIV'). Errors on invalid or out-of-range inputs without charging.
Example use cases
Chapter label formatting
“Format chapter 14 as a Roman numeral so I can use it in the book's table of contents.”
Year display in Roman numerals
“I need to show the year 1999 in Roman numerals for a film title card — what does that look like?”
Outline section numbering
“Convert the numbers 1 through 10 to Roman numerals so I can label the sections of my presentation outline.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/int-to-romanWhen to prefer
Choose this endpoint when you need a reliable, deterministic Roman numeral conversion without setting up a library or shipping extra code. Ideal for agent UIs, document generation pipelines, chapter/section labeling, outline formatting, and anywhere display-quality Roman numerals are needed on demand. The micropayment model means no API key or subscription setup is required.
Side effects
- Non-positive integer input (0 or negative) returns a validation error, no charge
- Input exceeds allowed range returns a structured validation error, no charge
- Non-integer input (float, string) returns a type validation error
- Missing required 'n' field returns a bad request error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| n | integer | Integer input (see tool summary for allowed range). |
Output
Schema · Response
{
"type": "json",
"example": {
"n": 42,
"roman": "XLII",
"schema": "delx/int-to-roman/v1"
}
}Tags
x402
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