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URL HTML Head Metadata Extractor
x402
URL HTML Head Metadata Extractor is a paid API for AI agents from well-006-url-metadata.mmelnyk2000.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-20).
Fetches a public HTTPS URL and extracts structured HTML head metadata including title, description, Open Graph, and Twitter card tags
Price / call$0.005
Success—
StatusUnknown
How this service works
Fetch a public https URL and extract HTML head metadata ($0.005 USDC via x402). https only — http, file, data, localhost, and private IPs are rejected. Caps: 1 MB body, ~10s timeout, max 5 redirects. Returns JSON { url, final_url, content_type, title?, description?, canonical?, lang?, open_graph, twitter, warnings }. Provided as is, with no warranty or guarantee of accuracy or fitness. Nothing is stored.
Output
A JSON object containing the original URL, final URL (after redirects), content type, optional page title, meta description, canonical URL, language, Open Graph tag map, Twitter card tag map, and any warnings encountered during fetch
Example use cases
Social preview card inspection
“I'm about to share https://openai.com/blog on LinkedIn — can you pull the Open Graph metadata so I know what title, description, and image will show up in the preview?”
SEO metadata audit for a page
“Can you check https://stripe.com and tell me what title, meta description, canonical URL, and language are set in the HTML head? I want to audit their on-page SEO basics.”
Enriching links with page context
“I have this article link https://www.nytimes.com/2024/01/01/technology/ai-trends.html — can you extract the title, description, and any Open Graph data so I can summarize what it's about before I open it?”
Technical details
Endpoint
POSThttps://well-006-url-metadata.mmelnyk2000.workers.dev/api/url-metadata?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to quickly extract structured HTML head metadata (title, description, Open Graph, Twitter cards) from a single public HTTPS URL without storing any data. It is ideal for enriching links, building social preview cards, auditing SEO metadata, or surfacing page context. It is not suitable for scraping page body content, crawling multiple pages, or accessing non-public or authenticated resources.
Side effects
- Non-HTTPS URLs (http, file, data, localhost, private IPs) are rejected with an error
- URLs with bodies exceeding 1 MB are truncated or rejected
- Requests timing out after ~10 seconds return a timeout error
- Pages returning non-HTML content types may have empty metadata fields
- URLs requiring authentication or behind paywalls may return empty or partial metadata
- More than 5 redirects causes the request to fail
- Pages with no HTML head metadata return mostly empty fields with warnings
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urlrequired | string | https URL to fetch and extract HTML head metadata from. http/file/data/localhost/private IPs rejected. |
Output
Schema · Response
{
"type": "object",
"additionalProperties": true
}Tags
x402
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