# agentshelf.syntexa.ch OG Description Extractor

> agentshelf.syntexa.ch OG Description 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 og:description meta tag value from a public web page URL or raw HTML, with SSRF protection.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/profile-og-description?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-syntexa-ch-og-description-extractor-6622cef5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qJS8hVFX-3zB116o5lO3j

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-og-description-extractor-6622cef5 -d '<json body>'
```

Example prompt: Can you grab the og:description from https://www.example.com/blog/my-article so I know what text shows up when it's shared on social media?

## When to prefer this

Use this endpoint when you need to extract specifically the og:description Open Graph meta tag from a public webpage or raw HTML snippet, and you want SSRF-safe fetching without building your own scraper. Prefer the free POST /v1/sandbox/profile-og-description endpoint first; use this paid endpoint ($0.004 USDC) when the sandbox is unavailable or you need production reliability. Choose this over generic scraping tools when you only need Open Graph description metadata specifically.

## Known failure modes

- URL is unreachable or returns non-200 status — extraction fails with an error
- Page has no og:description meta tag — returns empty/null result
- URL blocked by SSRF safety rules (private IP ranges, localhost) — rejected with SSRF error
- HTML input exceeds 200,000 character limit — request rejected
- URL exceeds 2048 character limit — validation error
- Page requires JavaScript rendering — static extraction may miss dynamically injected tags

## How this service works

Call when an agent needs og:description extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-og-description first.

## Output

Returns the extracted og:description meta tag value from the target page or HTML string. If the tag is present, returns its content text; if absent, returns an empty or null value.

## 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-og-description-extractor-6622cef5/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)