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PennyRail URL Normalize – Canonical URL
x402
PennyRail URL Normalize – Canonical URL 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).
Normalizes a raw URL string into its canonical form, resolving inconsistencies in scheme, casing, trailing slashes, and query parameter ordering.
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-readable settlement service
Output
Returns a JSON object containing the canonical (normalized) version of the submitted URL, with scheme lowercased, host lowercased, redundant path segments resolved, query parameters consistently ordered, and other normalization rules applied.
Example use cases
Deduplicating crawled web links
“I have a list of URLs from my web crawler and many are duplicates written differently — can you canonicalize 'https://WWW.Example.com/blog/post-1/?utm_source=twitter' so I can compare it consistently against others?”
Standardizing URLs before database insert
“Before I save this URL to my database, normalize 'http://mysite.com/../products/shoes/' so it's in a clean canonical form without any path traversal or trailing slashes.”
Comparing two seemingly different URLs
“Are 'HTTPS://shop.example.com/item?color=red&size=M' and 'https://shop.example.com/item?size=M&color=red' actually the same page? Can you canonicalize the first one so I can check?”
Technical details
Endpoint
POSThttps://pennyrail.vercel.app/api/p/nano/url.normalize--canonical-urlWhen to prefer
Choose this endpoint when you need a lightweight, pay-per-call URL canonicalization step — especially useful in deduplication pipelines, web crawlers, or data normalization workflows where you need consistent URL comparison without standing up your own normalization logic. At $0.001 USDC per call it is cost-effective for moderate volumes.
Side effects
- Malformed or non-URL input string may return an error or unexpected output
- Relative URLs without a base may not resolve correctly
- Very long URLs may be truncated or rejected
- Ambiguous query parameter encoding edge cases may produce inconsistent results
- Network or cold-start latency on Vercel serverless may cause occasional timeouts
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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