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PennyRail JSON Field Omission Service
x402
PennyRail JSON Field Omission Service is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-21).
Accepts a JSON object and returns it with specified fields omitted, delivered as a machine-readable settlement response
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
A JSON object identical to the input but with the specified fields removed; the response schema is an open object with any remaining key-value pairs from the original input.
Example use cases
Sanitize API response before logging
“I have this user record JSON and I need to strip out the 'token' and 'creditCard' fields before we log it — can you send it through PennyRail's omit service and give me the cleaned object?”
Remove internal metadata from output
“Before we return this product JSON to the client, remove the 'internalCost' and 'vendorId' fields from it using the JSON omit service.”
Filter PII from dataset record
“Take this customer record and drop the 'dateOfBirth', 'phoneNumber', and 'address' fields from it so we have a privacy-safe version to share with the analytics team.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/nano/json.omit--omit-json-fields?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, pay-per-call JSON field omission operation without standing up your own transformation service. It is ideal for agents that occasionally need to strip sensitive or unwanted keys from small JSON payloads as part of a pipeline, and where the $0.001 USDC micropayment cost per call is acceptable.
Side effects
- Missing or malformed 'input' field returns a validation error
- Non-object input value causes a schema rejection
- Payment failure (402) if x402 micropayment is not settled before the call
- Unrecognized field names to omit may be silently ignored rather than flagged
- Vercel cold-start latency on first invocation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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