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FreeTier Agent API — Robots.txt Crawl Permission Checker
x402
FreeTier Agent API — Robots.txt Crawl Permission Checker is a paid API for AI agents from freetier-agent-api.pages.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-18).
Checks whether a given URL is allowed or disallowed for crawling according to the site's robots.txt rules, returning crawl policy, matched rule, sitemap locations, and crawl delay.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-call data API for AI agents: AI model prices and cost calculator, 4,259 MCP servers, email domain checks, text-to-JSON extraction, country/holiday/currency lookup, page and link checks, page-to-markdown, 2,230 verified APIs. x402, USDC on Base, no signup. Sources cited in every response.
Output
A JSON object containing: the checked URL, a boolean 'allowed' indicating crawl permission, a list of sitemaps found in robots.txt, the matched user-agent rule, the matched rule string, and any crawl delay specified for that user-agent.
Example use cases
Pre-scrape compliance check for agent
“Before my agent scrapes https://shop.example.com/products, check if that URL is allowed by robots.txt so we don't violate the site's crawl policy.”
SEO audit for blocked pages
“I need to verify if https://myblog.com/private-section is blocked by robots.txt — can you check the crawl rules and tell me which rule applies and whether there's a crawl delay?”
Sitemap discovery via robots.txt
“Can you look up the robots.txt rules for https://news.ycombinator.com/ and tell me if there are any sitemap URLs listed there?”
Technical details
Endpoint
GEThttps://freetier-agent-api.pages.dev/api/robots-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to verify crawl permission before accessing or scraping a URL, especially for compliance with web crawling etiquette. Ideal for pre-flight checks in scraping workflows, SEO audits, or any agent that fetches web content and needs to respect robots.txt policies. Prefer this over manually parsing robots.txt when you need a fast, structured JSON answer with matched rule and sitemap discovery.
Side effects
- Invalid or non-absolute URL returns an error
- Site has no robots.txt — may return allowed=true with no rules
- Network timeout fetching the remote robots.txt
- Malformed robots.txt on target site may produce unexpected results
- URL scheme other than http/https not supported
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"url": "https://example.com/some/page",
"allowed": true,
"sitemaps": [],
"user_agent": "*",
"crawl_delay": null,
"matched_rule": null
}
}Tags
x402
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