# AgentShelf XPath hreflang Link Extractor

> AgentShelf XPath hreflang Link Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-29).

Extracts hreflang attribute values from all <link> elements on a public webpage or raw HTML string using an XPath selector.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/xpath-link-hreflang?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-xpath-hreflang-link-extractor-86207d07
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cKoviJzhNj5-H3O6JuN-I

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-hreflang-link-extractor-86207d07 -d '<json body>'
```

Example prompt: Can you extract all the hreflang attributes from the link tags on https://www.example.com so I can see which language and region versions of the page are declared?

## When to prefer this

Use this endpoint when you specifically need to extract hreflang attributes from <link> elements on a page for internationalization auditing, SEO analysis, or locale coverage verification. It is SSRF-safe and accepts either a live URL or raw HTML. Prefer the free sandbox POST /v1/sandbox/xpath-link-hreflang first; use this paid endpoint when you need production reliability or the sandbox is unavailable.

## Known failure modes

- URL is unreachable or returns a non-200 status — extraction fails with an error
- HTML input is empty or missing valid <link> elements — returns empty list
- URL triggers SSRF protection — blocked by safety filter
- HTML exceeds 200,000 character limit — request rejected
- No hreflang attributes present in any link elements — returns empty result
- Malformed HTML may cause incomplete parsing

## How this service works

Call when an agent needs hreflang attributes of //link via //link/@hreflang from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/xpath-link-hreflang first.

## Output

A list of hreflang attribute values extracted from all <link> elements on the given page or HTML, typically returning language-region codes such as 'en', 'fr-FR', 'x-default', etc., paired with any associated href values.

## 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-hreflang-link-extractor-86207d07/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)