# agentshelf.syntexa.ch OG Image Extractor

> agentshelf.syntexa.ch OG Image Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.007/call, status unknown (last checked 2026-10-02).

Extracts the og:image URL from the Open Graph meta tag of a public web page or raw HTML string, with SSRF protection.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/css-meta-og-image?utm_source=zero.xyz
- Price: $0.007/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-image-extractor-2d3790c4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BfE4ZCuri6sUunpL7dMkh

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-image-extractor-2d3790c4 -d '<json body>'
```

Example prompt: Can you pull the og:image URL from https://example.com/article — I need the Open Graph image meta tag value from that page?

## When to prefer this

Choose this endpoint when you need to extract the og:image value from a public web page or a raw HTML snippet without paying for a full browser render. It is SSRF-safe, making it appropriate for agent pipelines where untrusted URLs might be submitted. If a free sandbox version at POST /v1/sandbox/css-meta-og-image is available, try that first to avoid the $0.007 USDC charge.

## Known failure modes

- URL is unreachable or returns a non-200 status — fetch fails
- SSRF protection blocks private/internal IP ranges or localhost URLs
- HTML input exceeds 200,000 character limit — rejected
- No og:image meta tag present in the page — empty or null result
- Malformed URL input (under 8 or over 2048 characters) — validation error
- Page requires JavaScript rendering to populate meta tags — static fetch may miss dynamically injected tags

## How this service works

Call when an agent needs og:image content via meta[property='og:image'] from a public page or HTML (SSRF-safe). Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/css-meta-og-image first.

## Output

Returns the value of the og:image meta property found in the page's HTML — typically an absolute image URL that the page declares for social sharing previews. If the page has no og:image tag, the response will indicate its absence.

## 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 charset=\"utf-8\"><meta name=\"description\" content=\"Desc\">\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-image-extractor-2d3790c4/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)