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SiteCheck Web Intel – Crossdomain XML Test
x402
SiteCheck Web Intel – Crossdomain XML Test 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 2026-10-24).
Fetches and parses a domain's crossdomain.xml and clientaccesspolicy.xml files, listing allowed origins and flagging wildcard ('*') grants.
Price / call$0.002
Success—
StatusUnknown
How this service works
Reads a site's public crossdomain.xml (Adobe Flash) and clientaccesspolicy.xml (Silverlight) if they exist, lists the origins they allow, and flags wildcard grants ('*'). Old policies are rarely needed now, so a wildcard here mostly means leftovers; absence is the normal case.
Output
Returns the parsed contents of crossdomain.xml and/or clientaccesspolicy.xml if they exist on the target domain, including a list of permitted origins and a boolean or flag indicating whether any wildcard ('*') grants are present. If neither file exists, the response indicates their absence (which is the normal, expected case for modern sites).
Example use cases
Legacy policy security audit
“I'm auditing our company's domain example.com — can you check if it still has a crossdomain.xml or clientaccesspolicy.xml hanging around, and flag it if there's a wildcard '*' grant in there?”
Competitor security posture check
“Does shopify.com have a crossdomain.xml file, and if so, what origins does it allow? I want to know if there are any wildcard permissions.”
Bulk domain cleanup triage
“We're doing a cleanup of legacy Flash-era files — check if oldsite.mycompany.com still has a crossdomain.xml and list whatever origins it allows so I know if it needs to be removed.”
Technical details
Endpoint
GEThttps://api.webintel-api.workers.dev/api/security/crossdomain-xml-test?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to specifically inspect Adobe Flash cross-domain policy (crossdomain.xml) or Microsoft Silverlight client access policy (clientaccesspolicy.xml) for a given domain. It is the right choice for security audits targeting legacy cross-origin access controls, particularly when checking for dangerously permissive wildcard grants. Prefer this over general security scanners when you only need cross-domain policy file inspection without broader port or vulnerability scanning.
Side effects
- Domain does not exist or is unreachable — network error or DNS failure
- Neither crossdomain.xml nor clientaccesspolicy.xml present — returns absence indicator (normal case)
- Domain returns non-XML or malformed content at the expected paths — parse error
- Rate limiting or timeout from target server — request may fail
- Invalid domain format provided — validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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