# agentshelf.syntexa.ch CSS Option Extractor

> agentshelf.syntexa.ch CSS Option Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-29).

Extracts the text content of an HTML option element from a public webpage or raw HTML using a CSS selector, with SSRF protection.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/css-option?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-syntexa-ch-css-option-extractor-19916481
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tj0AZOowTqlr2lHnUV1p1

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-css-option-extractor-19916481 -d '<json body>'
```

Example prompt: Can you extract the text of the first option element from the dropdown on this page: https://example.com/form — use the CSS selector 'select#country option:first-child'?

## When to prefer this

Use this endpoint when an agent needs to extract the text of a specific HTML option element from a live public URL or a raw HTML string, and SSRF safety is required. Prefer the unpaid sandbox POST /v1/sandbox/css-option first for testing; use this paid endpoint for production calls where reliability matters.

## Known failure modes

- URL is unreachable or returns non-200 response — extraction fails
- CSS selector matches no option element — empty or null result returned
- HTML content exceeds 200,000 character limit — request rejected
- SSRF-blocked URL (internal/private network addresses) — request refused
- Malformed HTML prevents proper parsing — unexpected or empty result

## How this service works

Call when an agent needs option text via option from a public page or HTML (SSRF-safe). Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/css-option first.

## Output

Returns the text content of the matched HTML option element from the provided URL or raw HTML input, extracted safely without SSRF risk.

## 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-css-option-extractor-19916481/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)