# agentshelf.syntexa.ch XPath Meta Description Extractor

> agentshelf.syntexa.ch XPath Meta Description Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Extracts the content of the HTML meta description tag (meta[name='description']) from a public URL or raw HTML string, SSRF-safe.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/xpath-meta-description?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-syntexa-ch-xpath-meta-description-extractor-918953f6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cjSFRUjnkV1D5RoTeeup0

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-syntexa-ch-xpath-meta-description-extractor-918953f6 -d '<json body>'
```

Example prompt: Can you fetch the meta description tag from https://example.com and tell me what it says?

## When to prefer this

Use this endpoint when you need specifically the meta description tag content from a webpage, particularly for SEO auditing, link preview generation, or content cataloging workflows. Prefer this over generic scraping endpoints when you only need this one XPath-targeted field. Use the unpaid POST /v1/sandbox/xpath-meta-description for testing before incurring the $0.002 USDC charge.

## Known failure modes

- URL is unreachable or returns non-200 status — fetch fails with network error
- URL is a private/internal IP address — rejected by SSRF protection
- HTML does not contain a meta name=description tag — empty or null content returned
- HTML string exceeds 200,000 character limit — request rejected
- URL string is fewer than 8 characters or malformed — validation error
- Page requires JavaScript rendering — static HTML fetch may miss dynamically injected meta tags

## How this service works

Call when an agent needs content of meta name=description via //meta[@name='description']/@content from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/xpath-meta-description first.

## Output

Returns the string value of the content attribute from the first matching <meta name='description'> element found in the fetched or provided HTML. If no meta description tag is present, returns an empty or null result.

## 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-syntexa-ch-xpath-meta-description-extractor-918953f6/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)