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Robots.txt & LLMs.txt Checker
x402
Robots.txt & LLMs.txt Checker is a paid API for AI agents from tools.adamhaleworks.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-13).
Checks robots.txt crawl permissions and llms.txt presence for up to 5 URLs across configurable AI and web crawler user-agents.
Price / call$0.001
Success—
StatusUnknown
How this service works
Guides and free-to-run Apify actors for bulk tech stack lookup, sitemap URL export to CSV, TED and UK Find a Tender search, and RSS-to-JSON feed monitoring.
Output
Returns a JSON object with a count of results, success/failure counts, and per-URL details including: crawl permission (allowed/denied) and crawl delay per user-agent, robots.txt fetch status and group count, any sitemaps listed in robots.txt, and llms.txt presence with its URL, HTTP status, and first line of content.
Example use cases
AI crawler access audit for competitor sites
“Check if stripe.com, shopify.com, and squarespace.com block any AI crawlers like GPTBot or ClaudeBot in their robots.txt, and let me know if any of them have an llms.txt file.”
Pre-launch robots.txt verification for own site
“Before I launch my new site at mycompany.com, can you verify that GPTBot, Bingbot, and Googlebot are all allowed to crawl it according to robots.txt, and check if llms.txt is present?”
LLM discoverability check for content strategy
“I'm building an LLM-friendly site — can you check whether anthropic.com and mistral.ai have llms.txt files and what crawl permissions they grant to ClaudeBot and Google-Extended?”
Technical details
Endpoint
GEThttps://tools.adamhaleworks.workers.dev/x402/v1/robots-check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to programmatically verify how a website's robots.txt treats AI or web crawlers, especially when checking for llms.txt presence simultaneously. It supports batch checking of up to 5 URLs and a configurable set of up to 15 user-agent tokens, making it ideal for auditing multiple domains at once. Prefer it over manual robots.txt parsing or generic HTTP fetchers when you need structured, per-agent crawl permission data in a single call.
Side effects
- Private/internal hostnames or IP addresses are rejected
- More than 5 URLs in a single request causes an error
- Invalid URL format returns a failed result for that entry
- Site unreachable or DNS failure marks the URL as failed
- Ports other than 80 or 443 are rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 1,
"failed": 0,
"results": [
{
"ok": true,
"input": "https://github.com/about",
"result": {
"url": "https://github.com/about",
"agents": {
"*": {
"allowed": true,
"crawlDelay": null
},
"GPTBot": {
"allowed": true,
"crawlDelay": 1
},
"ClaudeBot": {
"allowed": true,
"crawlDelay": 1
}
},
"llmsTxt": {
"url": "https://github.com/llms.txt",
"status": 200,
"present": true,
"firstLine": "# GitHub"
},
"robotsTxt": {
"url": "https://github.com/robots.txt",
"state": "rules",
"groups": 8,
"status": 200,
"sitemaps": []
}
}
}
],
"succeeded": 1
}
}Tags
x402
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