Free AI search tools
These free tools each check one part of how AI search engines and agents read your site. Every tool runs against a live URL, shows the evidence it found and links to the fix guide. None of them needs an account or an email address.
By SeenLens · Last updated
Which tool to use
| Your question | Tool |
|---|---|
| Does my robots.txt or firewall block GPTBot, ClaudeBot or PerplexityBot? | AI crawler checker |
| Is my llms.txt file valid, and what should it contain? | llms.txt checker |
| How do I tell AI systems which uses of my content I allow? | Content Signal generator |
| How visible is this page to AI search overall? | Free GEO audit |
| Is this page ready to be quoted as a direct answer? | Free AEO audit |
How the tools relate to the full scan
Each tool runs a subset of the 43 checks in the full SeenLens scan, with the same rules and the same evidence. Use a tool when you have one question. Use the full scan when you want one score for a page and a ranked list of everything that stops AI search from reading it.
The tools fetch only public URLs, at most a few requests per check, with the documented SeenLensBot user agent or the crawler user agent the check needs. They do not store the text of your pages.
Pages in this section
- AI crawler checker
Free tool: reads robots.txt for 14 crawlers (GPTBot, ClaudeBot, PerplexityBot and more) and tests for firewall blocks.
- llms.txt checker
Free tool: validates /llms.txt against the llmstxt.org format, tests linked URLs, and generates a file in the browser.
- GEO audit
Free tool: a 43-check GEO audit of one URL, scored from 0 to 100 across five dimensions, with the top three issues.
- AEO audit
Free tool: an AEO audit checklist of 12 steps, with a scan that tests ten of them on one URL.
- Content Signal generator
Free tool: builds a robots.txt block with Content-Signal values for search, ai-input and ai-train.
- Schema checker
Free tool: reads the JSON-LD on a page, reports syntax errors per block, lists schema.org types and flags common missing properties.