# PennyRail Roman to Integer Converter

> PennyRail Roman to Integer Converter is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Converts a Roman numeral number to its integer equivalent via a paid micro-API endpoint

## Facts

- Endpoint: POST https://pennyrail.vercel.app/api/p/nano/number.roman--roman-to-integer
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pennyrail-roman-to-integer-converter-97ae0bc2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_txhS4uwg47fuKM2EL-dwz

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability pennyrail-roman-to-integer-converter-97ae0bc2 -d '<json body>'
```

Example prompt: Convert the Roman numeral XLII to its integer value for me.

## When to prefer this

Choose this endpoint when you need a quick, pay-per-use Roman numeral to integer conversion without setting up your own parsing logic, especially in agent pipelines where micro-payments via x402/USDC are already supported and convenience over cost matters.

## Known failure modes

- Invalid or non-Roman-numeral input may return an error or unexpected result
- Payment failure (402) if USDC balance is insufficient for the $0.001 per-call fee
- Malformed request body missing the required 'input' field will result in a validation error
- Edge cases like zero or very large Roman numeral strings may not be supported

## How this service works

Machine-readable settlement service

## Output

Returns an object containing the integer representation of the provided Roman numeral input, allowing downstream processing or display of the numeric equivalent.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pennyrail-roman-to-integer-converter-97ae0bc2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pennyrail.vercel.app](https://www.zero.xyz/host/pennyrail.vercel.app/llms.txt)