Free tool
llms.txt generator & checker
Paste your site's address: we check its /llms.txt against the spec, or draft one from your homepage that you can save as it is.
What is llms.txt and do I need one?
llms.txt is a Markdown file at the root of a site (/llms.txt) that gives AI assistants a title, a one-line summary and links to the site's key pages. It was proposed in 2024 at llmstxt.org; it's cheap to add, but no assistant is obliged to read it.
What it checks
Whether /llms.txt exists and is served as text, not as your app's web page
The # title and the > summary line the spec asks for
## sections of [name](url) links, and the links that don't parse
The file's size, and whether /llms-full.txt exists too
A draft built from your homepage's title, description and main links
Use it from your AI assistant
Claude, ChatGPT, Cursor and any other MCP client can run this check for you. Add the server below, then ask it to check a site: the tool is check_llms_txt. No sign-up and no key.
https://api.makerradar.io/mcpOr call the REST API, which answers the same report as JSON:
curl -X POST https://api.makerradar.io/v1/tools/llms-txt-generator \
-H "content-type: application/json" -d '{"url":"https://example.com"}'Get a page that passes, free
Every product on MakerRadar gets a permanent page with a clean title and description, structured data, an FAQ, a Markdown version for AI assistants and a place in our llms.txt — and a backlink you can earn.
Related tools
Agent readiness checker
Paste your site's address and see which of the files and signals AI agents look for it publishes: the same set this site publishes for them.
Reads the page
AI visibility checker
Find out whether AI assistants and answer engines are allowed to read your site — and can understand it when they do.
Reads the page
Sitemap checker
Paste your site's address: we find its sitemap the way search engines do, read it, and tell you what would stop them using it.
Reads the page
More free tools
Website grader
Paste a URL and get one grade for the whole site: found on Google, quoted by AI, shared well and safe to visit, with the fixes that matter most first.
Reads the page
Launch checklist
Everything a product's website needs before launch day, in order, each step with the free tool that checks it, then the steps for launch day itself.
Runs in your browser
Launch directory planner
Pick what you need (free, a dofollow link, a minimum Domain Rating) and get a short, ranked plan of where to launch, a few a week, with each directory's DR.
Answers from MakerRadar's own catalogue
Domain availability checker
Type a name and see which startup domains are free, and for the taken ones, when they were registered and with which registrar.
Looks up the domain, never visits the site
Alternatives finder
Paste a product's address and see the products listed here that do the same job, in the order its alternatives page ranks them.
Answers from MakerRadar's own catalogue
SEO checker
Paste a URL and see what Google reads on that page — and what to fix first.
Reads the page
AI citation checker
Paste a URL and see how easy that page is for ChatGPT, Perplexity and Google's AI Overviews to quote, signal by signal, with what to add first.
Reads the page
What AI sees
Paste a URL and read the page the way an AI assistant does: the HTML your server sends, turned into Markdown, with its outline, and whether your content only appears once JavaScript runs.
Reads the page
Social card preview
Paste a URL and see the card X, LinkedIn, Facebook and Slack will show when someone shares it — and why it might show no image at all.
Reads the page
Logo & favicon grabber
Paste a URL and see every icon the site declares, its real size, and the one a directory or app would pick: shown from the site's own address, never copied.
Reads the page
robots.txt tester
Paste any URL on a site and see, for Google, Bing and every major AI crawler, whether its robots.txt lets them fetch it — and which line decides.
Reads the page
Structured data checker
Paste a URL and see every schema.org type the page declares in JSON-LD, which rich results it can earn, and the fields each one is missing.
Reads the page
Broken link checker
Paste a URL and see every link on that page that's broken or redirects: up to 50 links, same-site first, each with its status and anchor text.
Reads the page
Redirect checker
Paste a URL and see every hop it takes before it lands: the status code, the address and what changed, with loops and long chains flagged.
Reads the page
SERP snippet preview
Paste a URL and see how its page would show in Google, with where the title and description would be cut and how to fit them.
Reads the page
AI crawler robots.txt generator
Choose, crawler by crawler, which AI companies may read your site for search and which for training, and copy the robots.txt lines.
Runs in your browser
Keyword generator
Start from what your product is and get the searches — and the questions people ask AI — that lead to products like it.
Runs in your browser
Domain rating checker
See how strong a domain's backlink profile is — the number launch directories are ranked by.
Looks up the domain, never visits the site
Security headers checker
See which protections a site sends with every page — and which it's missing.
Reads the page
Email DNS checker (SPF, DMARC, DKIM)
Will mail from this domain land in the inbox? Check its SPF, DMARC and DKIM in one go.
Looks up the domain, never visits the site
Domain age checker
How old is a domain, who registered it and when does it expire — straight from the registry.
Looks up the domain, never visits the site
SSL certificate checker
Who issued the site's certificate, when it expires, and whether the zone allows that issuer.
Looks up the domain, never visits the site
Hosting & CDN lookup
Where a site is served from: its platform, its edge network and the origin behind it.
Looks up the domain, never visits the site
Tech stack detector
Find out what a site is built with and which third-party scripts it loads.
Reads the page
Frequently asked questions
What is llms.txt?
A Markdown file at /llms.txt that tells AI assistants what a site is and where its most useful pages are: a title, a one-line summary, then sections of links. It's a proposal (llmstxt.org) that many assistants and agent tools read.
Will llms.txt get me into ChatGPT's answers?
Nobody can promise that. It hands an assistant a clean map of your site when it looks, at almost no cost. Letting AI crawlers in through robots.txt and putting your content in the HTML matter more.
What should go in it?
Your product's name, one sentence on what it does, and links to the pages an assistant needs to answer questions about it: features, pricing, docs, changelog, contact. MakerRadar lists every product it hosts in its own llms.txt.