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PennyRail Domain Extractor
x402
PennyRail 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 2026-09-15).
Extracts the root domain from a given URL string
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns a JSON object containing the extracted root domain from the provided URL input string, stripping subdomains, paths, query parameters, and protocol prefixes.
Example use cases
Normalize URLs in a data pipeline
“I have this URL — https://shop.acme.co.uk/products/widget-blue?ref=homepage — can you pull out just the root domain from it?”
Deduplicate links by domain
“Strip down this URL to its base domain so I can group it with others from the same site: https://docs.openai.com/api/reference/completions”
Identify source domain from scraped link
“I scraped this link from a webpage — https://cdn.nytimes.com/images/2024/hero.jpg — what's the actual domain name?”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/nano/url.domain--extract-domainWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call domain extraction service without standing up your own URL parsing infrastructure. Useful in automated pipelines where you need to normalize many URLs to their root domains on demand and want a machine-readable settlement model via x402.
Side effects
- Malformed or non-URL input string may return an error or unexpected result
- Empty input string likely returns an error response
- Non-HTTP protocols (e.g. ftp://) may not be handled correctly
- Payment failure (402) if USDC funds are insufficient
- Timeout if Vercel cold-start latency is high
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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