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ProofDesk Launch QA API — Metadata Endpoint
x402
ProofDesk Launch QA API — Metadata Endpoint is a paid API for AI agents from proofdesk-audit-api.konstanta-work-x.chatgpt.site, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).
Fetches and returns deterministic HTML metadata (title, Open Graph, Twitter cards, robots, canonical, etc.) for a given URL hosted on a supported managed-hosting platform
Price / call$0.01
Success—
StatusUnknown
How this service works
A deterministic launch report for supported managed-hosting pages. Pay $0.04 USDC per request with x402 on Base or Solana.
Output
A JSON object containing the fetched page's full metadata snapshot: source rendering method, final and requested URLs, HTTP status, redirect chain, elapsed fetch time, a structured metadata object (title, description, canonical, language, viewport, favicon, robots, Open Graph fields, Twitter card fields), a list of missing fields, a unique metadataId, fetchedAt timestamp, and a disclaimer noting that JavaScript rendering and social-platform preview behavior are not evaluated.
Example use cases
Pre-launch SEO metadata audit
“Before I publish my new landing page at https://acme.chatgpt.site/launch, can you check all its metadata — Open Graph tags, Twitter card, canonical URL, robots, favicon — and tell me what's missing or wrong?”
Social sharing preview verification
“I'm about to share https://mybrand.chatgpt.site/product on Twitter and LinkedIn — can you fetch the page's Twitter card and Open Graph metadata so I can see exactly what the preview will look like and whether any fields are blank?”
Automated post-deploy metadata validation
“We just deployed https://storefront.chatgpt.site/home — can you run a metadata check on it and flag any missing fields like og:image, og:description, or twitter:card so we know if it's ready to go live?”
Technical details
Endpoint
POSThttps://proofdesk-audit-api.konstanta-work-x.chatgpt.site/api/metadata?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a deterministic, structured audit of a web page's static HTML metadata — specifically Open Graph tags, Twitter card fields, canonical URL, robots directives, and basic SEO signals — for pages hosted on supported managed-hosting platforms. It is ideal for pre-launch QA workflows, automated post-deploy checks, or social-sharing preview verification. Prefer it over general-purpose scrapers when you need a structured missing-fields report and a consistent metadata schema rather than raw HTML. Not suitable for JavaScript-heavy SPAs where metadata is injected client-side, or for arbitrary URLs outside supported hosting environments.
Side effects
- Unsupported hosting platform — only managed-hosting pages on supported domains are auditable
- URL is unreachable or returns a non-200 HTTP status — httpStatus field reflects the error
- Page uses heavy client-side JavaScript rendering — metadata may be incomplete since only server-rendered HTML is parsed
- Missing or malformed URL input — request rejected with validation error
- Rate limiting or payment failure via x402 — request not processed
- Redirect loops or chains that exceed limits — may result in fetch failure
Output
Schema · Response
{
"type": "json",
"example": {
"source": "server-rendered-html",
"finalUrl": "https://example.com/",
"metadata": {
"title": "Example Domain",
"robots": null,
"favicon": "/favicon.ico",
"twitter": {
"card": "summary_large_image",
"image": null,
"title": null,
"description": null
},
"language": "en",
"viewport": "width=device-width, initial-scale=1",
"canonical": "https://example.com/",
"openGraph": {
"url": "https://example.com/",
"type": "website",
"image": "/preview.png",
"title": "Example Domain",
"siteName": null,
"description": "A public example page."
},
"description": "A public example page."
},
"elapsedMs": 120,
"fetchedAt": "2026-07-30T00:00:00.000Z",
"redirects": [],
"disclaimer": "Declared values from the fetched HTML source only; JavaScript rendering and social-platform preview behavior are not evaluated.",
"httpStatus": 200,
"metadataId": "pdm_example",
"requestedUrl": "https://example.com/",
"missingFields": [
"robots",
"openGraph.siteName",
"twitter.title",
"twitter.description",
"twitter.image"
]
}
}Tags
x402
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