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PennyRail URL Domain Lookup
x402
PennyRail URL Domain Lookup is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status down (last checked 2026-10-22).
Resolves and processes a URL's domain through a machine-readable settlement service, returning operation result data for the given URL input
Price / call$0.001
Success—
StatusDown
How this service works
Machine-readable settlement service
Output
Returns a JSON object containing an 'operation' string describing what was performed, and a 'result' field with the domain-level data resolved for the given URL. Additional fields may be present.
Example use cases
Brand domain verification check
“I need to verify the domain details for https://acmecorp.io — can you pull the machine-readable domain data for that URL?”
URL domain audit for security
“Run a domain lookup on https://suspicious-link.net and tell me what you get back about its domain.”
Domain metadata enrichment pipeline
“For this URL — https://shop.mybrand.com — fetch the domain-level data so I can enrich my records with the resolved domain information.”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/f/url.domain?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, pay-per-call ($0.001 USDC) machine-readable domain lookup for a given URL and want x402 micropayment-compatible infrastructure without a subscription. Prefer over heavier DNS APIs when cost-per-call efficiency and agent-native payment rails matter.
Side effects
- Invalid or malformed URL input returns an error
- Unreachable or nonexistent domain may return empty or null result
- Missing required 'input' field causes request rejection
- Payment failure (insufficient USDC) blocks the call
- Timeout if the domain resolution takes too long
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string | string URL |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| resultrequired | — | |
| operationrequired | string |
Tags
x402
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