# AgentShelf XPath Article Extractor

> AgentShelf XPath Article Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-02).

Extracts the main article text from a public webpage or raw HTML using XPath-based heuristics, with SSRF protection.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/xpath-article?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-xpath-article-extractor-639b9b84
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7l-CgPkfUZHPuZSwsSyYy

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-xpath-article-extractor-639b9b84 -d '<json body>'
```

Example prompt: Grab just the article text from this page — https://www.example.com/some-news-article — strip out the navigation and ads, I only want the main body content.

## When to prefer this

Prefer this endpoint when you need the main article body extracted from a public webpage URL or raw HTML and want SSRF-safe server-side fetching. Use the free sandbox POST /v1/sandbox/xpath-article first to avoid the $0.004 USDC cost during testing. Choose this over generic scraping tools when you specifically need article-body isolation (not full page HTML, metadata, or structured data).

## Known failure modes

- URL is unreachable or returns non-200 status — extraction fails with an error
- HTML is malformed or has no detectable article content — returns empty or minimal text
- SSRF-blocked URL (internal/private IP range) — request rejected for security reasons
- Input exceeds maxLength limits (URL > 2048 chars or HTML > 200,000 chars) — validation error
- Page requires JavaScript rendering — static HTML fetch may miss dynamically loaded content

## How this service works

Call when an agent needs text of //article via //article from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/xpath-article first.

## Output

Returns the extracted main article text from the provided URL or HTML, with navigational elements, ads, and boilerplate removed, leaving only the core readable article body.

## 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-xpath-article-extractor-639b9b84/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)