# agentshelf.syntexa.ch CSS Nofollow Link Extractor

> agentshelf.syntexa.ch CSS Nofollow Link Extractor is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-29).

Extracts all nofollow anchor hrefs (a[rel~='nofollow']) from a public URL or raw HTML, SSRF-safe

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/css-nofollow?utm_source=zero.xyz
- Price: $0.001/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-nofollow-link-extractor-37909c67
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6HYPYLJKUxEc4DrRb94Gt

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-nofollow-link-extractor-37909c67 -d '<json body>'
```

Example prompt: Can you pull all the nofollow links from https://example.com/blog — I need the hrefs of every anchor tagged with rel=nofollow on that page.

## When to prefer this

Use this endpoint when you need to specifically extract rel=nofollow anchor links from a page, either by URL or raw HTML, and want an SSRF-safe, deterministic CSS-selector-based extraction without involving an LLM. Prefer the unpaid sandbox endpoint (POST /v1/sandbox/css-nofollow) for testing. Choose this over a general scraper when you only need nofollow links and want a cheap, focused extraction at $0.001 USDC.

## Known failure modes

- URL is unreachable or returns non-200 status — fetch fails with an error
- URL is blocked by SSRF protection (private/internal IP ranges) — returns SSRF error
- HTML input exceeds 200,000 character limit — returns validation error
- No nofollow links found on the page — returns empty array
- Malformed HTML may result in incomplete or no extraction
- URL string shorter than 8 characters or longer than 2048 characters — returns validation error

## How this service works

Call when an agent needs nofollow anchor hrefs via a[rel~='nofollow'] from a public page or HTML (SSRF-safe). Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/css-nofollow first.

## Output

A list of href values extracted from all anchor elements matching a[rel~='nofollow'] found either by fetching the given URL or parsing the provided HTML string. Returns an array of URL strings representing the nofollow links on the page.

## 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-nofollow-link-extractor-37909c67/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)