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PennyRail ROT13 Text Encoder
x402
PennyRail ROT13 Text Encoder 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).
Applies ROT13 Caesar cipher transformation to a given input string, returning the encoded/decoded result
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns a JSON object containing the ROT13-transformed version of the input string, where each alphabetic character is shifted 13 positions in the alphabet while non-alphabetic characters remain unchanged.
Example use cases
Encoding spoiler text for forums
“Apply ROT13 to this spoiler: 'Darth Vader is Luke's father' so I can post it without ruining things for others.”
Decoding a ROT13 mystery message
“Someone sent me this ROT13-encoded message and I need it decoded: 'Uryyb, jbeyq!' — can you run it through ROT13?”
Obfuscating sensitive config values
“Take this API key placeholder 'MySecretKey123' and ROT13-encode it so it's not sitting in plaintext in my notes.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/nano/text.rot13--rot-13When to prefer
Choose this endpoint when you need a quick, paid, machine-readable ROT13 transformation as part of an automated pipeline that already uses x402 micropayment infrastructure. It is particularly useful when you want a simple stateless cipher operation without standing up your own encoding logic and are already operating in a crypto-native payment context.
Side effects
- Missing 'input' field returns a validation error
- Non-string input type may cause a 400 or schema error
- Payment failure (402) if USDC balance is insufficient or x402 header is missing
- Empty string input may return an empty result or error
- Network timeout on vercel.app cold start
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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