# AgentShelf Stylesheet Link Extractor

> AgentShelf Stylesheet Link 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 all link[rel=stylesheet] href values from a public URL or raw HTML, in an SSRF-safe manner

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/profile-rel-stylesheet?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentshelf-stylesheet-link-extractor-5cd8f3bb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_z0jkV1bvds_08S_pCQSeO

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-stylesheet-link-extractor-5cd8f3bb -d '<json body>'
```

Example prompt: Can you extract all the stylesheet hrefs from https://example.com — I want to see every link[rel=stylesheet] the page is loading?

## When to prefer this

Use this endpoint when you need to specifically enumerate CSS stylesheet link references from a webpage or HTML blob in an SSRF-safe environment. Prefer the free sandbox variant (POST /v1/sandbox/profile-rel-stylesheet) for testing. Choose this over general HTML scrapers when you only need stylesheet hrefs and want a focused, low-cost extraction without parsing all link tags yourself.

## Known failure modes

- URL is unreachable or returns a non-200 status — no hrefs returned
- Page blocks the crawler with bot-detection or firewall — empty or error result
- SSRF-safe filter blocks private/internal IP ranges — request rejected
- HTML input exceeds 200,000 character limit — request rejected
- No link[rel=stylesheet] elements present on the page — returns empty list
- Malformed URL input (under 8 or over 2048 characters) — validation error

## How this service works

Call when an agent needs link rel=stylesheet hrefs extracted from a public page or HTML (SSRF-safe). Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/profile-rel-stylesheet first.

## Output

A list of href attribute values from all link[rel=stylesheet] elements found in the fetched page or provided HTML, representing external and inline CSS file references.

## 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-stylesheet-link-extractor-5cd8f3bb/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)