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PennyRail URL Decode / Percent Decode
x402
PennyRail URL Decode / Percent Decode 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).
Decodes a percent-encoded (URL-encoded) string back into its original, human-readable form
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
A decoded plain-text string with all percent-encoded sequences (e.g. %20, %2F, %3D) converted back to their original characters, returned as a JSON object.
Example use cases
Decode encoded query parameter
“I have this encoded URL parameter value — 'search%3Dflight%26from%3DNYC%26to%3DLAX' — can you decode it so I can read what it actually says?”
Unescape encoded file path
“This file path came back percent-encoded: '%2Fhome%2Fuser%2Fmy%20documents%2Freport%202024.pdf' — can you decode it into a normal readable path?”
Recover readable text from encoded form submission
“I captured a form POST body that looks like 'name%3DJohn%20Doe%26email%3Djohn%40example.com%26message%3DHello%20there' — decode it for me so I can see what was submitted.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/nano/encoding.url-decode--percent-decodeWhen to prefer
Choose this endpoint when you need a simple, pay-per-call percent/URL decoding operation without setting up server infrastructure. Ideal for agents that only occasionally need URL decoding as part of a larger workflow, or when running in environments where a native decode function is unavailable.
Side effects
- Malformed percent sequences (e.g. incomplete %2) may cause decoding errors or partial results
- Input that is not actually percent-encoded may be returned as-is or produce unexpected output
- Overly long strings may hit payload size limits
- Missing required 'input' field returns a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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