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PennyRegWatch Robots.txt Permission Checker
x402
PennyRegWatch Robots.txt Permission Checker is a paid API for AI agents from pennyregwatch.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Checks whether a specific crawler is allowed or denied to fetch a given URL under the site's robots.txt rules, returning the ALLOW/DENY decision, the winning rule, crawl-delay, sitemap URLs, and live provenance.
Price / call$0.001
Success—
StatusUnknown
How this service works
Decide whether a specific crawler may fetch an exact public URL under robots.txt rules. Returns ALLOW/DENY, the winning rule, crawl-delay, sitemap URLs, and live provenance. Use before an AI agent or crawler fetches a page.
Output
Returns an ALLOW or DENY verdict for the specified crawler and URL, the exact robots.txt rule that produced the decision, any crawl-delay directive, a list of sitemap URLs declared in robots.txt, and live provenance metadata about where and when the robots.txt was fetched.
Example use cases
Pre-fetch compliance check for AI crawler
“Before my agent fetches https://techcrunch.com/2024/01/10/ai-news/, check whether ClaudeBot is permitted to crawl that URL under their robots.txt — I need the ALLOW or DENY decision and the specific rule that applies.”
Sitemap discovery via robots.txt
“Can you look up the robots.txt for https://shopify.com and tell me all the sitemap URLs listed there, along with any crawl-delay that applies to Googlebot?”
Block detection for custom crawler
“I'm building a crawler using the product token 'MyBot' — can you check whether https://nytimes.com/politics/ is allowed or denied for MyBot according to their robots.txt rules?”
Technical details
Endpoint
GEThttps://pennyregwatch.com/v1/robotsWhen to prefer
Use this endpoint when an AI agent or automated crawler needs to verify robots.txt compliance before fetching a page, especially in agentic pipelines where legal and ethical crawl permissions must be confirmed programmatically. Prefer this over manually parsing robots.txt when you need a structured, authoritative ALLOW/DENY decision with the winning rule surfaced — particularly useful for any agent that respects crawler directives or needs sitemap discovery as a side effect.
Side effects
- Target URL is malformed or unreachable — returns error
- robots.txt file not found at target host (404) — may return default ALLOW or error
- robots.txt fetch times out — may return error or cached result
- User-agent token not recognized — falls back to wildcard '*' rules
- robots.txt is extremely large or malformed — parsing may be incomplete
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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