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PennyRail URL Domain Extractor
x402
PennyRail URL Domain Extractor is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-31).
Extracts the domain from a given URL via a machine-readable, pay-per-call settlement endpoint
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns a JSON object containing the extracted domain from the provided URL string, representing just the hostname or root domain portion of the input URL.
Example use cases
Normalize URLs for deduplication
“I have a list of URLs from our crawl logs and I need to group them by domain — can you pull the domain out of this URL: https://shop.acme.co/products/widget-blue?ref=email”
Identify referral traffic sources
“We're analyzing referral links and need the domain for each one — extract the domain from https://blog.techcrunch.com/2024/05/01/ai-startup-funding so I can tally sources”
Sanitize user-submitted links
“A user just submitted this link in our form: https://www.malicious-site.net/phishing/page — can you extract the domain so I can check it against our blocklist”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/nano/url.domain--domain-from-url?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call domain extraction with no API key setup, particularly in agentic or automated pipelines using x402 micropayment rails. Prefer it when integrating with Coinbase-compatible payment flows or when you want a simple, stateless URL-to-domain transformation without standing up your own parsing logic.
Side effects
- Malformed or non-URL input string may return an error or empty result
- Missing required 'input' field causes a 400-level validation error
- Ambiguous inputs (e.g. bare domain without scheme) may produce unexpected output
- Service unavailability on Vercel hosting could cause 5xx errors
- Payment failure or insufficient USDC balance blocks the call
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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