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SiteCheck Web Intel – Referrer-Policy Audit
x402
SiteCheck Web Intel – Referrer-Policy Audit is a paid API for AI agents from api.webintel-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-25).
Fetches a domain's Referrer-Policy HTTP header and meta referrer tag, resolves the effective browser policy, and classifies how much URL information is leaked to third parties (strict, moderate, or leaky).
Price / call$0.002
Success—
StatusUnknown
How this service works
Reads a site's Referrer-Policy header and its <meta name=referrer> tag from the home page, works out the policy a browser would apply, and rates how much of the URL it sends to other sites (strict, moderate or leaky). One GET; links on other pages can set their own policy.
Output
Returns the raw Referrer-Policy HTTP header value, the content of any <meta name=referrer> tag found on the home page, the effective policy a browser would apply (resolving precedence between header and meta tag), and a human-readable leakage rating: strict, moderate, or leaky.
Example use cases
Privacy audit for a SaaS product
“We're doing a privacy review — can you check what referrer policy stripe.com has in place and whether it's leaking any URL data to external services?”
Security check before vendor onboarding
“Before we integrate with this vendor, can you audit the referrer-policy header on acmepayments.com and tell me if it's strict, moderate, or leaky?”
Competitor privacy posture comparison
“I want to compare privacy hygiene — can you check the referrer policy on shopify.com and tell me how much URL info it sends to other sites?”
Technical details
Endpoint
GEThttps://api.webintel-api.workers.dev/api/security/referrer-policy-audit?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, pay-per-call check on a domain's referrer privacy posture without setting up your own headless browser or header-inspection tooling. Ideal for security audits, vendor due diligence, compliance reviews, or privacy assessments where you need to know whether a site leaks URL paths and query strings to third-party domains. Not suitable for auditing referrer policies on subpages or links other than the home page.
Side effects
- Domain not reachable or DNS failure — no header or tag data returned
- Domain has no Referrer-Policy header or meta tag — defaults to browser fallback policy noted in response
- Invalid domain format input — validation error returned
- Timeout fetching the home page — partial or error response
- Only the home page is audited; individual page links may have different policies
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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