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ScrapeCheck XML Verification
x402
ScrapeCheck XML Verification is a paid API for AI agents from scrapecheck.fly.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Verifies that a claimed value exists at a specified element or attribute path in a public XML document, using deterministic double re-fetch with no LLM involvement
Price / call$0.002
Success—
StatusUnknown
How this service works
XML tier (deterministic, no LLM): verifies a claimed value lives at a named path in a public XML document, by independent double re-fetch. Use it for feeds and sitemaps; for JSON use /verify-json, for HTML use /verify. Paths address elements and @attributes (urlset.url[0].loc). String-exact; ambiguous or volatile values return unverifiable, never a guess. First 100 checks per client are free: resend with header X-Use-Free-Allowance: yes and no payment to use them.
Output
Returns a structured result indicating whether the claimed value was verified as present at the specified XML path in the live document, or marked as 'unverifiable' if the path is ambiguous or the content is volatile. Never guesses — only confirms exact string matches or reports inability to confirm.
Example use cases
Sitemap URL presence check
“I was told our sitemap at https://mysite.com/sitemap.xml lists https://mysite.com/new-product as the first URL — can you verify that urlset.url[0].loc actually says that by fetching it independently?”
RSS feed item title validation
“Someone shared a news article claiming it's the top item in the BBC RSS feed at https://feeds.bbci.co.uk/news/rss.xml — can you verify the value at rss.channel.item[0].title matches what they claimed?”
XML config attribute audit
“Our deployment pipeline claims the config file at https://releases.example.com/config.xml has the attribute version set to '3.4.1' at the path configuration.release.@version — can you do an independent double-fetch to confirm that's actually what's there?”
Technical details
Endpoint
POSThttps://scrapecheck.fly.dev/verify-xmlWhen to prefer
Use this endpoint when you need deterministic, LLM-free verification of a specific value inside an XML document such as an RSS feed, Atom feed, or XML sitemap. Prefer this over the HTML tier (/verify) when the source is structured XML, and over the JSON tier (/verify-json) when the document is XML rather than JSON. Ideal when you need provable, auditable double-fetch confirmation with no probabilistic inference.
Side effects
- Path does not exist in the XML document — returns unverifiable
- Value at path does not match the claimed value — returns not verified
- URL is not publicly accessible or returns non-200 — fetch error
- Document is not valid XML — parse failure
- Volatile or frequently changing values may return unverifiable across double-fetch
- Ambiguous path expressions that match multiple nodes return unverifiable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | public HTTPS URL |
| claim | object | see the route description; there is no asked field - this tier adjudicates exactly what it accepts |
Output
Schema · Response
{
"type": "json",
"example": {
"engine": "web_field_v1/0.2.0+2ae28205cac4",
"key_id": "k2",
"reasons": [
"claimed value found at path \"urlset.url[0].loc\" (matched element: url)"
],
"verdict": "pass",
"evidence": {
"lens_votes": {},
"refetched_at": "2026-08-28T00:00:00.000Z",
"refetch_excerpt": "{\"urlset.url[0].loc\":\"https://scrapecheck.fly.dev/\"}",
"second_fetch_at": "2026-08-28T00:00:01.000Z"
},
"signature": "ed25519:…",
"check_type": "xml_field_v1",
"confidence": 0.95,
"verdict_id": "00000000-0000-0000-0000-000000000000",
"source_hash": "sha256:…",
"verifier_url": "https://scrapecheck.fly.dev"
}
}Tags
x402
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