# SiteCheck Web Intel – Crossdomain XML Test

> 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.

## Facts

- Endpoint: GET https://api.webintel-api.workers.dev/api/security/crossdomain-xml-test?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-web-intel-crossdomain-xml-test-e8e32711
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_z4HdwnjB9jXCmWSqgnebf

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sitecheck-web-intel-crossdomain-xml-test-e8e32711
```

Example prompt: Check adobe.com for a crossdomain.xml or clientaccesspolicy.xml file and tell me if it has any wildcard origin grants that could be a security concern.

## When to prefer this

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.

## Known failure modes

- 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

## 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).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string",
       "description": "Domain name such as www.adobe.com (required)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-web-intel-crossdomain-xml-test-e8e32711/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.webintel-api.workers.dev](https://www.zero.xyz/host/api.webintel-api.workers.dev/llms.txt)