# AgentShelf Article Author Extractor

> AgentShelf Article Author Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-29).

Extracts the article:author metadata field from a public webpage URL or raw HTML content, returning the author information in an SSRF-safe manner.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/profile-article-author?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-article-author-extractor-366641a8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uszs_9U_BliEZWGL9VfMQ

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 agentshelf-article-author-extractor-366641a8 -d '<json body>'
```

Example prompt: Can you extract the article author from this page — https://example.com/some-news-article — using the article:author meta tag?

## When to prefer this

Choose this endpoint when you need to specifically extract the article:author metadata field from a web page or HTML snippet in a safe, sandboxed way. It is ideal for content pipelines, news aggregators, citation tools, or any workflow that requires reliable author attribution from article pages. Prefer the free sandbox endpoint (/v1/sandbox/profile-article-author) for testing. Use this paid endpoint ($0.001 USDC) for production workloads where SSRF safety and reliability are required.

## Known failure modes

- URL is unreachable or returns a non-200 status — extraction fails with an error
- Page does not contain an article:author meta tag — returns empty or null result
- HTML content exceeds 200,000 character limit — request rejected
- URL shorter than 8 characters or longer than 2048 characters — validation error
- SSRF-blocked URL (private IP ranges, localhost) — request rejected for safety
- Malformed HTML that cannot be parsed — may return empty result

## How this service works

Call when an agent needs article:author extracted from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/profile-article-author first.

## Output

Returns the extracted article:author value from the page's meta tags or structured HTML. This typically includes the author's name as declared in the page's metadata. If no article:author is found, the response will indicate no match.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "url": {
   "type": "string",
   "maxLength": 2048,
   "minLength": 8,
   "description": "Public page to fetch. The selector or profile is fixed by the SKU. Provide url or html."
  },
  "html": {
   "type": "string",
   "examples": [
    "<!doctype html><html lang=\"en\"><head><title>Hello</title>\n<meta name=\"description\" content=\"Desc\"><meta property=\"og:title\" content=\"OG\">\n<link rel=\"canonical\" href=\"https://example.com/\"><link rel=\"icon\" href=\"/favicon.ico\">\n</head><body><h1>Hello</h1><a href=\"https://example.com/a\">A</a></body></html>"
   ],
   "maxLength": 200000,
   "minLength": 1,
   "description": "HTML to extract from locally. Provide html or url. When both are set, html is used."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentshelf-article-author-extractor-366641a8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)