TendorAITendorAI

Crawler & Robots.txt Checker

Read what your website’s robots.txt file instructs search crawlers, AI crawlers and control tokens to do at any URL you choose. Plain English, with the exact rule behind every result.

Makes one request, to your /robots.txt, identifying itself as TendorAI. It does not pretend to be any company’s crawler. Live crawler access is not tested by this tool: a CDN, firewall, bot protection or login can still refuse a crawler that robots.txt permits.

Frequently asked questions

What does this check actually tell me?
It reads the robots.txt file your website publishes and reports what that file instructs, for each crawler listed, at the one URL you submitted. That is a configuration reading: it tells you what your site asks crawlers to do.
Does an allowed result mean the crawler can definitely reach my site?
No. robots.txt is one layer. A CDN, firewall, WAF, bot-protection rule, geo-block or login can still refuse a crawler that your robots.txt permits, and this check does not test any of those. An allowed result means your published instructions do not refuse that crawler at that path — nothing more.
What is the difference between "explicitly allowed" and "no applicable rule"?
Explicitly allowed means a rule in your file names that path and permits it. No applicable rule means your file simply does not address it — the crawler is not named and no catch-all rule matches the path either. Both commonly result in the page being fetched, but only one of them is something your file actually says, so this tool reports them separately rather than calling both "allowed".
Why does it check one URL rather than my whole website?
Because robots.txt rules apply per path. A rule can permit your homepage and refuse /members, so a single whole-site verdict would be wrong. The result applies to the exact URL you submitted. Submit another path to check that path.
What if the check cannot read my robots.txt?
Then it reports that it could not read the file, and every crawler is marked undetermined. It does not report crawlers as allowed, because a file that could not be read is not evidence of permission.
Will changing my robots.txt get my business mentioned by ChatGPT or Claude?
This check cannot tell you that, and neither can your robots.txt. Crawler access is a technical configuration matter. Whether an AI assistant names a particular business in an answer depends on many things this file does not control, and no robots.txt change guarantees a citation, a mention or a recommendation.
Does this tool send requests pretending to be GPTBot or ClaudeBot?
No. It makes exactly one request, to /robots.txt, identifying itself as TendorAI Robots Checker. An earlier version of this tool sent twelve requests carrying other companies’ crawler names; that behaviour was removed because it misrepresented who was connecting to your server.

See how AI assistants currently answer questions about your business

This page reads one configuration file. The free AI Visibility Report measures what AI assistants actually say when asked about a business, and records the sources cited in those answers.

Get the free AI Visibility Report