# AgentShelf CSS Textarea Name Extractor

> AgentShelf CSS Textarea Name Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).

Extracts the `name` attribute values of all `<textarea>` elements from a given public webpage URL or raw HTML string.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/css-textarea-name?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-css-textarea-name-extractor-c5a08951
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XpSsyIGip8NSeZqIBs3Mx

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-css-textarea-name-extractor-c5a08951 -d '<json body>'
```

Example prompt: Can you extract all the textarea `name` attribute values from this page: https://example.com/contact — I need to know what textarea fields the form uses?

## When to prefer this

Use this endpoint when you need to programmatically discover the `name` attributes of textarea inputs on a public web page or a known HTML snippet — particularly for form analysis, automation mapping, or web scraping workflows. Prefer the free sandbox POST /v1/sandbox/css-textarea-name first; use this paid endpoint when the sandbox is unavailable or rate-limited. Choose this over a general HTML parser when you want a focused, SSRF-safe single-selector extraction without building your own scraping infrastructure.

## Known failure modes

- URL is unreachable or returns non-200 response — extraction fails with an error
- HTML input exceeds 200,000 character limit — request rejected
- URL points to non-HTML content (e.g. PDF, image) — no matches returned
- Page has no textarea elements with name attributes — returns empty result
- SSRF-blocked URL (private IP range, localhost) — request rejected for security
- Malformed HTML may result in incomplete parsing and missed matches

## How this service works

Call when an agent needs textarea names via textarea[name] from a public page or HTML (SSRF-safe). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/css-textarea-name first.

## Output

Returns a list of `name` attribute values found on all `<textarea name="...">` elements in the provided URL or HTML. If no textarea names are found, returns an empty list. The response reflects what CSS selector `textarea[name]` would match on the parsed 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 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-css-textarea-name-extractor-c5a08951/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)