# Crawlspur robots.txt Page Access Check

> Crawlspur robots.txt Page Access Check is a paid API for AI agents from crawlspur.halowerk.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-16).

Checks whether a given webpage URL is allowed to be crawled according to the site's robots.txt file

## Facts

- Endpoint: POST https://crawlspur.halowerk.com/v1/pruef/crawlspur/robots-erlaubt/seite
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crawlspur-robots-txt-page-access-check-cb9dc571
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yD1rzqRJmecah5yNKl7Ou

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 crawlspur-robots-txt-page-access-check-cb9dc571 -d '<json body>'
```

Example prompt: Can you check if https://example.com/blog/my-article is allowed to be crawled according to its robots.txt, using the Googlebot user agent?

## When to prefer this

Use this endpoint when you need to programmatically verify whether a specific page URL is permitted by the site's robots.txt before crawling or indexing it. Prefer this over manual robots.txt parsing when you need a reliable, automated per-URL check with optional user-agent specificity. Ideal for SEO audits, crawler pre-flight checks, and compliance validation pipelines.

## Known failure modes

- URL is not publicly accessible — robots.txt cannot be fetched
- Invalid or malformed URL provided in 'ziel' field
- robots.txt file is missing or returns a non-200 status
- Timeout when fetching the target page or robots.txt
- URL exceeds maximum length of 2048 characters
- CSS selector matches no element or multiple elements ambiguously

## How this service works

Prüft am Objekt seite den Befund Freigabe durch robots.txt.

## Output

Returns a finding indicating whether the specified page URL is permitted ('allowed') or blocked ('disallowed') by the site's robots.txt rules, potentially including which rule matched and for which user agent.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "ziel": {
   "oneOf": [
    {
     "type": "string",
     "maxLength": 2048,
     "minLength": 1,
     "description": "Öffentliche HTTP(S)-Adresse; bei DNS-Befunden Domain oder öffentliche IP."
    },
    {
     "type": "object",
     "required": [
      "adresse"
     ],
     "properties": {
      "adresse": {
       "type": "string",
       "maxLength": 2048,
       "minLength": 1
      },
      "selektor": {
       "type": "string",
       "maxLength": 240,
       "minLength": 1,
       "description": "CSS-Selektor: genau ein Objekt, sonst erster Treffer des Objektfilters."
      },
      "vergleich": {
       "type": "string",
       "maxLength": 2048,
       "description": "Öffentliche Vergleichsadresse für Link-, Sitemap- oder Sprachbefunde."
      },
      "user_agent": {
       "type": "string",
       "pattern": "^[A-Za-z0-9_-]{1,80}$"
      },
      "dkim_selektor": {
       "type": "string",
       "pattern": "^[A-Za-z0-9_-]{1,63}$"
      }
     },
     "additionalProperties": false
    }
   ]
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crawlspur-robots-txt-page-access-check-cb9dc571/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from crawlspur.halowerk.com](https://www.zero.xyz/host/crawlspur.halowerk.com/llms.txt)