# AgentShelf Profile Link Hreflang Extractor

> AgentShelf Profile Link Hreflang Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-29).

Extracts hreflang attribute values from link elements on a public webpage or provided HTML, enabling internationalization and SEO analysis.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/profile-link-hreflang?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-profile-link-hreflang-extractor-f1547020
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Lvf-yC0B-INfC0HVMvYGZ

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-profile-link-hreflang-extractor-f1547020 -d '<json body>'
```

Example prompt: Can you pull all the hreflang link values from https://example.com so I can see which language and region variants they've declared?

## When to prefer this

Choose this endpoint when you need to programmatically extract hreflang link attributes from a public webpage or raw HTML for SEO auditing, internationalization verification, or localization research. It is SSRF-safe, making it suitable for agent use without risk of internal network access. Prefer the free sandbox endpoint (POST /v1/sandbox/profile-link-hreflang) for development and testing before paying $0.006 USDC per production call.

## Known failure modes

- URL is unreachable or returns non-200 status — extraction fails with an error
- HTML input exceeds 200,000 character limit — request rejected
- No hreflang link elements present on the page — returns empty result
- SSRF-blocked URLs (private/internal IPs) are rejected for security
- Malformed HTML may cause incomplete extraction
- URL shorter than 8 characters or longer than 2048 characters fails validation

## How this service works

Call when an agent needs link hreflang values extracted from a public page or HTML (SSRF-safe). Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/profile-link-hreflang first.

## Output

Returns the hreflang attribute values found in link elements of the page or HTML, typically including language codes (e.g. 'en', 'fr', 'de') and optional region subtags (e.g. 'en-US', 'fr-FR'), along with associated href URLs for each alternate language version.

## 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-profile-link-hreflang-extractor-f1547020/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)