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Syntexa AgentShelf CSS Selector Extractor
x402
Syntexa AgentShelf CSS Selector Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-02).
Extracts text and attributes from a public webpage or raw HTML using user-specified CSS selectors, with SSRF protection and a node cap.
Price / call$0.004
Success—
StatusUnknown
How this service works
Call when an agent needs text and attributes extracted with CSS selectors from a public page or HTML (SSRF-safe, node cap). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/css-select first.
Output
Returns an array of results per selector, each containing matched element text content and/or the requested attribute values, respecting the specified node cap (limit).
Example use cases
Scrape product prices from listing page
“Go to https://shop.example.com/laptops and extract the text content of all elements matching '.price' and the 'data-sku' attribute of elements matching '.product-card', up to 20 results.”
Extract nav links from a website
“From the HTML I'm giving you, pull the text and 'href' attribute of every element matching 'nav a' — limit to 50 results.”
Pull structured article metadata from a blog
“Fetch https://blog.example.com/articles and extract the text from '.article-title' and the 'datetime' attribute from 'time.published', up to 15 results each.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/css-select?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to target specific elements on a webpage or within HTML using precise CSS selectors, especially when you need attribute values (e.g. href, src, data-*) alongside text. Prefer the free sandbox POST /v1/sandbox/css-select for testing before committing the $0.004 USDC paid call. Choose over heading-specific or phone-specific sibling endpoints when your extraction target is arbitrary and selector-defined.
Side effects
- URL is not publicly accessible or returns a non-200 status
- SSRF protection blocks private/internal IP ranges or localhost URLs
- HTML input exceeds 200,000 character limit
- CSS selector syntax is invalid
- No elements match the provided selectors (empty result set)
- Limit or selector array count out of allowed range
- Payment not fulfilled, request rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public page to fetch. Provide url or html. Private hosts are rejected. |
| html | string | HTML to query locally. Provide html or url. When both are set, html is used. |
| limit | integer | Maximum nodes returned per selector, from 1 to 50. Default 20. |
| selectors | array | One to eight CSS selectors. Each may name an attribute to extract. |
Tags
x402
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