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Agent402 URL Normalizer
x402
Agent402 URL Normalizer is a paid API for AI agents from agent402.co.uk, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).
Normalizes a URL to its canonical form by lowercasing the host, stripping default ports, and sorting query parameters.
Price / call$0.001
Success—
StatusDown
How this service works
Don't burn tokens on deterministic work. Go/no-go jobs first: payout preflight, text firewall (PII/secrets), budget check — then rails, calendars, finmath. x402 USDC on Base. UK + global. agent402.co.uk — not agent402.tools. $0.001–$0.002 USDC on Base. No API keys.
Output
A JSON object with a 'valid' boolean indicating whether the input is a well-formed URL, and a 'canonical' string containing the normalized URL with lowercased host, default ports removed, and query parameters sorted alphabetically.
Example use cases
Deduplication before link storage
“Before I save these URLs to my database, normalize each one so duplicates with different casing or query param ordering get collapsed — start with https://Example.COM:80/page?z=3&a=1”
Consistent cache key generation
“I need a canonical URL to use as a cache key — can you normalize https://WWW.MYSITE.COM:443/search?q=hello&lang=en so the host is lowercase and the query params are sorted?”
URL validation in an agent pipeline
“Check whether this URL is valid and give me its canonical form so I can use it safely downstream: https://API.Example.ORG:443/v1/data?token=abc&limit=10”
Technical details
Endpoint
POSThttps://agent402.co.uk/v1/normalize/urlWhen to prefer
Use this endpoint when you need a deterministic, cheap ($0.001) canonical form of a URL — especially for deduplication, cache key generation, or pre-storage normalization. Prefer it over rolling your own normalization logic when you need a consistent, spec-compliant result without implementing URL parsing yourself.
Side effects
- Invalid or malformed URL input returns valid:false with no canonical field
- Missing 'url' field in request body causes a 400-level error
- Non-HTTP/HTTPS schemes may not be supported and could return valid:false
- Extremely long URLs may be rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | URL |
Output
Schema · Response
{
"type": "json",
"example": {
"valid": true,
"canonical": "https://example.com/path?a=1&b=2"
}
}Tags
x402
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