# AgentShelf Twitter Creator Meta Tag Extractor

> AgentShelf Twitter Creator Meta Tag Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.007/call, status unknown (last checked 2026-09-29).

Extracts the twitter:creator meta tag value from a public web page or raw HTML, with SSRF protection.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/profile-twitter-creator?utm_source=zero.xyz
- Price: $0.007/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-twitter-creator-meta-tag-extractor-d5fc51a4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YBwud2mmQXjapdsDmfXa2

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-creator-meta-tag-extractor-d5fc51a4 -d '<json body>'
```

Example prompt: Can you pull the twitter:creator meta tag from https://example.com/article — I want to know which Twitter handle is credited as the author on that page?

## When to prefer this

Use this endpoint when you need to extract specifically the twitter:creator meta tag from a public page or a block of HTML, with SSRF protection. Prefer the free sandbox endpoint (/v1/sandbox/profile-twitter-creator) when available to avoid the $0.007 USDC charge. Choose this over generic scraping tools when you need a lightweight, purpose-built extractor for this single Twitter Card metadata field.

## Known failure modes

- URL is unreachable or returns a non-200 HTTP status
- SSRF-blocked URL (private/internal IP ranges rejected)
- Page does not contain a twitter:creator meta tag — returns empty/null
- HTML input exceeds 200,000 character limit
- URL exceeds 2048 character limit or is malformed
- Neither url nor html provided in request body

## How this service works

Call when an agent needs twitter:creator extracted from a public page or HTML (SSRF-safe). Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/profile-twitter-creator first.

## Output

Returns the value of the twitter:creator meta tag found in the page (e.g. a Twitter @handle such as '@johndoe'). If the tag is absent or the page cannot be fetched, returns a null or empty result indicating the tag was not found.

## 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-creator-meta-tag-extractor-d5fc51a4/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)