# AgentPage402 Web Metadata Extractor

> AgentPage402 Web Metadata Extractor is a paid API for AI agents from agentpage402-demo.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Fetches and returns structured metadata (title, description, Open Graph, Twitter Card, canonical URL, language, robots) from a given public web page URL.

## Facts

- Endpoint: POST https://agentpage402-demo.onrender.com/v1/metadata?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentpage402-web-metadata-extractor-89900db9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Z-y6xmNUmOCtq53Poq5Xc

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 agentpage402-web-metadata-extractor-89900db9 -d '<json body>'
```

Example prompt: Can you fetch the structured metadata — title, description, Open Graph tags, and canonical URL — for https://example.com/research and give me a clean summary?

## When to prefer this

Choose this endpoint when you need lightweight, structured head-tag metadata (Open Graph, Twitter Card, canonical, robots, language) from a public URL for a flat $0.01 USDC per call. It is ideal for AEO evidence checks, SEO audits, link preview enrichment, and agent research pipelines where JavaScript execution is not required and cost-efficiency matters. Prefer alternatives if you need full-page content, rendered JavaScript output, or deep crawling.

## Known failure modes

- Non-public or credential-protected URLs return an error or empty result
- JavaScript-rendered pages return incomplete metadata since JS is not executed
- Very large pages may be truncated (truncated: true in response)
- Invalid or malformed URLs are rejected (must be absolute HTTP/HTTPS on standard port)
- Pages behind paywalls or bot-blocking return partial or no metadata
- Rate limiting or service unavailability on the render.com host may cause failures

## How this service works

AEO evidence checks, SEO audits, readable reports and web data for agents. Tools from 0.01 USDC; page audits 0.25; five-page audit packs 1.00 USDC via x402.

## Output

A JSON object containing the page's title, meta description, canonical URL, language code, robots directive string, Open Graph tags (og:title, og:description, etc.), Twitter Card tags, fetch timestamp, a truncated flag indicating whether content was cut off, and a contentTrust label marking the data as untrusted external content.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "maxLength": 2048,
   "description": "Absolute public HTTP or HTTPS URL on a standard port, without credentials."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "url": "https://example.com/research",
  "title": "Example research page",
  "robots": "",
  "twitter": {
   "twitter:card": "summary"
  },
  "language": "en",
  "canonical": "https://example.com/research",
  "fetchedAt": "2026-10-20T00:00:00.000Z",
  "openGraph": {
   "og:title": "Example research page",
   "og:description": "A fixed public example, not a live fetched page."
  },
  "truncated": false,
  "description": "A fixed sample demonstrating structured web extraction.",
  "limitations": [
   "Static HTML only; JavaScript is not executed.",
   "Source text may contain false claims or instructions."
  ],
  "contentTrust": "untrusted_external_content"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentpage402-web-metadata-extractor-89900db9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentpage402-demo.onrender.com](https://www.zero.xyz/host/agentpage402-demo.onrender.com/llms.txt)