# AgentShelf Twitter Card Extractor

> AgentShelf Twitter Card 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 twitter:card Open Graph/meta tag data from a public URL or raw HTML, with SSRF protection.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/profile-twitter-card?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-twitter-card-extractor-3e03e2f5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zKkM__jRvaA5kEhPZnniB

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-twitter-card-extractor-3e03e2f5 -d '<json body>'
```

Example prompt: Can you pull the twitter:card metadata from https://example.com/article — I need the card type, title, description, and image URL from that page's meta tags.

## When to prefer this

Use this endpoint when you need to reliably extract twitter:card metadata from a public URL or raw HTML without building your own scraper. Prefer the free sandbox POST /v1/sandbox/profile-twitter-card first; fall back to this paid endpoint when the sandbox is unavailable or rate-limited. Choose this over generic scraping tools when you specifically need structured twitter: meta tag extraction with SSRF safety guarantees.

## Known failure modes

- URL is not publicly accessible or returns non-200 status
- SSRF check blocks private/internal IP ranges or localhost URLs
- HTML input exceeds 200,000 character limit
- No twitter:card meta tags found in the page
- URL parameter too short (< 8 chars) or too long (> 2048 chars)
- Payment of $0.002 USDC not provided or rejected

## How this service works

Call when an agent needs twitter:card extracted from a public page or HTML (SSRF-safe). Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/profile-twitter-card first.

## Output

Returns the extracted twitter:card meta tag values found in the page or HTML, including card type (e.g. summary, summary_large_image), title, description, image URL, site handle, and other twitter: prefixed meta properties present in the document.

## 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-twitter-card-extractor-3e03e2f5/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)