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robots.txt Parser: Rules, Sitemaps, AI-Crawler Blocks, and Path-Allowed Check
x402
robots.txt Parser: Rules, Sitemaps, AI-Crawler Blocks, and Path-Allowed Check is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Fetches and parses a site's robots.txt, returning crawl rules, sitemaps, AI-crawler blocks, and whether a specific path is allowed for a given user-agent.
Price / call$0.001
Success—
StatusUnknown
How this service works
robots.txt parser: rules, sitemaps, AI-crawler blocks, and is-this-path-allowed check — Genesis402 / UnyKorn Operator Network
Output
Returns the parsed robots.txt contents including crawl rules per user-agent, disallow and allow directives, sitemap URLs, whether specific AI crawlers are blocked, and a boolean indicating if the requested path is permitted for the specified user-agent.
Example use cases
AI crawler policy audit
“Can you check robots.txt on nytimes.com and tell me if GPTBot or CCBot are blocked, and what rules they have?”
Pre-scrape path permission check
“Before I scrape shopify.com/collections, can you check their robots.txt to see if that path is allowed for a generic crawler?”
Sitemap discovery from robots.txt
“I need to find all the sitemaps listed in the robots.txt for wikipedia.org — can you pull those for me?”
Technical details
Endpoint
POSThttps://twin.unykorn.org/web/robots?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to programmatically determine crawl permissions for any website before scraping, to audit AI-crawler policies across sites, or to discover sitemap URLs. Prefer this over manual fetching because it handles parsing, normalization, and AI-specific block detection automatically.
Side effects
- robots.txt not found (404) — site may not have one, returns empty or error
- network timeout if the target domain is unreachable
- malformed robots.txt on the target site may produce incomplete parsing
- rate limiting by the target domain when fetching robots.txt
- invalid domain or URL input causes a parameter error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| params | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "robots-txt",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.001,
"receipt_id": "g402-<16hex>"
},
"sources": [
{
"ok": true,
"name": "<source>"
}
],
"limitations": "<text>",
"generated_at": "<iso time>",
"evidence_hash": "sha256:<64hex>"
}
}Tags
x402
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