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PennyRail Text Reverse
x402
PennyRail Text Reverse 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).
Reverses the characters of an input string, delivered as a paid micropayment API endpoint
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns a JSON object containing the reversed version of the input string — characters in the exact opposite order from what was submitted.
Example use cases
Palindrome check preprocessing
“Take the string 'racecar' and reverse it for me so I can compare it to the original and check if it's a palindrome.”
Obfuscated text generation
“I need to hide a short message by reversing it — can you flip 'Meet me at noon' so the characters are in reverse order?”
Data pipeline string inversion
“Reverse this identifier string 'a1b2c3d4' so I can run it through my downstream parser that expects reversed input.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/nano/text.reverse--reverse-textWhen to prefer
Choose this endpoint when you need a simple, deterministic, pay-per-call text reversal over the x402 micropayment protocol — useful in agent workflows where you want metered, trustless string transformation without setting up a full backend service.
Side effects
- Missing 'input' field in request body returns a validation error
- Empty string input may return an empty string or an error
- Very long strings may time out or be rejected
- Payment of $0.001 USDC must be settled via x402 protocol before the response is delivered; insufficient payment returns a 402 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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