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x402 Gateway Metadata Single
x402
x402 Gateway Metadata Single is a paid API for AI agents from x402-gateway-production-1f21.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-10).
Extracts metadata (title, description, Open Graph tags, and other head-level properties) from a single public webpage URL
Price / call$0.001
Success—
StatusUnknown
How this service works
Extract webpage metadata, OpenGraph and JSON-LD for one public URL. Scalar single-URL contract for MCP and autonomous buyer runtimes.
Output
Returns a JSON object with structured metadata extracted from the target webpage's HTML head, including title, meta description, Open Graph properties (og:title, og:description, og:image, og:url), Twitter card tags, canonical URL, and other relevant head-level metadata fields found on the page.
Example use cases
Link preview card generation
“Pull the metadata from https://openai.com so I can generate a link preview card with the title, description, and og:image.”
SEO audit for competitor page
“Grab the metadata from https://competitor.com/landing-page — I want to see their page title, meta description, and any Open Graph properties they're using.”
Content ingestion enrichment
“Before I store this article in my knowledge base, extract the metadata from https://techcrunch.com/2024/01/01/some-article so I can tag it properly with title and description.”
Technical details
Endpoint
POSThttps://x402-gateway-production-1f21.up.railway.app/metadata-single?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need fast, lightweight metadata extraction from a single public URL without needing full page content or Markdown conversion. It is ideal for link preview generation, SEO auditing, content tagging, and enriching records with page titles and descriptions. Prefer this over full-page extraction endpoints when you only need head-level metadata and want minimal cost and latency.
Side effects
- URL is not publicly accessible or returns a non-200 status — extraction fails
- Timeout exceeded (max 60 seconds) if the page loads slowly
- Malformed or non-URI input causes validation error
- Page has no meaningful metadata in the HTML head — returns empty or sparse results
- JavaScript-rendered pages may not expose full metadata since the extractor likely fetches static HTML
- CORS or bot-blocking mechanisms on target site may prevent fetching
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"status": "ready"
}
}Tags
x402
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