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PennyRail Sort JSON Keys
x402
PennyRail Sort JSON Keys 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).
Sorts all keys in a JSON object alphabetically, returning a new object with keys in canonical sorted order
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
A JSON object identical in values to the input but with all top-level (and potentially nested) keys sorted in ascending alphabetical order, enabling deterministic serialization and canonical comparison.
Example use cases
Canonical JSON before cryptographic signing
“Before I sign this JSON payload, sort all its keys alphabetically so the serialization is deterministic: {"userId":"abc123","amount":50,"currency":"USD","timestamp":1700000000}.”
Normalizing API response for diffing
“I have two API responses that should be identical but the key order differs — sort the keys of this one alphabetically so I can do a clean comparison: {"status":"ok","data":{"name":"Alice","id":42}}.”
Consistent config file key ordering
“Alphabetize all the keys in my config JSON so it's easier to read and version-control diffs are cleaner: {"timeout":30,"retries":3,"host":"localhost","port":8080}.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/nano/json.sort-keys--sort-json-keysWhen to prefer
Choose this endpoint when you need a quick, pay-per-call JSON key sorting operation without standing up your own infrastructure — ideal for agents that occasionally need canonical JSON ordering for hashing, signing, diffing, or config normalization, and want a hosted microservice rather than inline code.
Side effects
- Input is not a valid JSON object — returns an error or empty response
- Input object is empty — returns an empty object
- Deeply nested keys may or may not be recursively sorted depending on implementation
- Network or payment failure returns a 402 or 5xx status
- Malformed input schema (missing 'input' wrapper) causes a 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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