Free tools for the AI web.

Yes. Every tool works without an account or a card. The generators and calculators run in your browser with no limit; the checks that run on our servers allow 15 a day without an account, and an account removes the daily limit.

Block the AI training crawlers if you don't want your pages used to train models; they send no visitors back. Keep AI search crawlers and assistant fetchers allowed if you want to be cited in AI answers.

Training crawlers like GPTBot and ClaudeBot collect pages that may train future models. AI search crawlers like OAI-SearchBot and PerplexityBot build the index an assistant searches before it answers, which is how your pages get cited.

It works for crawlers that follow it, which includes the big AI and search companies. Some assistant fetchers may skip it, and bad bots ignore it, so a firewall is the only way to stop those.

Check its IP, not its name. Paste the user agent and IP into the bot verifier, which compares the IP with the list the company publishes or its reverse DNS.

llms.txt is a Markdown file that lists a site's most useful pages for AI tools. It is a proposal, not a standard, so it is optional; robots.txt is still what crawlers obey.

Most AI crawlers never run JavaScript, so an analytics script in the page never sees them. They show up in server logs, or with a check that runs on the server, such as the NoirTrack server SDK.

Each check fetches only what it needs from that site, like its robots.txt or one page, and keeps the result for up to an hour so a repeat check is instant. The IPs you look up aren't stored, and nothing you check is collected into a list.