Check your llms.txt against the llmstxt.org format
llms.txt is a Markdown file at the root of a site that gives AI assistants a curated map of it. Citewren fetches /llms.txt and /llms-full.txt and checks what the llmstxt.org format asks for: a # title as the first headin
llms.txt is a Markdown file at the root of a site that gives AI assistants a curated map of it. Citewren fetches /llms.txt and /llms-full.txt and checks what the llmstxt.org format asks for: a # title as the first heading, a > summary line and - Page link lists. It also catches a common mistake: a site that answers /llms.txt with its HTML home page or 404 page. Pro builds a ready llms.txt draft from your sitemap.
Who this is for
Developers and site owners publishing llms.txt, documentation teams, and SEO consultants checking clients' files.
What the output looks like
llms.txt problems Citewren reports, word for word
| Problem | Message shown |
|---|---|
| No file | No /llms.txt: AI assistants have no curated map of your site. |
| HTML catch-all | /llms.txt answers with an HTML page (probably a catch-all), not a Markdown file. |
| No title | llms.txt has no "# Title" first heading (required by the llmstxt.org format). |
| No summary | llms.txt has no "> summary" line under the title. |
| No links | llms.txt lists no "- Page" links. |
How to do it
- Open Citewren and type your site's address.
- Look at the llms.txt line: valid, has problems or missing, with the link count.
- Fix the listed problems, or use the Pro draft, then re-check.
What it costs compared with the alternatives
Published prices, read on each vendor's own pricing page (2026-10-10):
| Tool | Price | Free tier |
|---|---|---|
| Citewren | Report pass $19 once (30 days); Monitor $9/month | 3 checks a day |
| Lumind | GEO Report $19; SEO + GEO Report $49; Premium $99 (one-time) | free AI visibility audit |
| AppearAI | $250 one-time audit | free scanner preview |
Pricing pages: Lumind, AppearAI.
Why this approach
- Checks the three parts of the llmstxt.org format and reports each missing one in plain words.
- Catches the HTML catch-all: many sites answer every unknown path with a page, so /llms.txt looks present but is not a Markdown file.
- Also checks /llms-full.txt, robots.txt AI crawler rules and structured data in the same run.
- Pro writes the draft: title, summary from your meta description and a page list from your sitemap.
FAQ
Do AI assistants read llms.txt?
llms.txt is a proposed format (llmstxt.org). Support varies by tool; publishing a valid file is cheap and gives assistants a clean map of your site.
Why not just eyeball the file?
You can for the format. Citewren also catches the HTML catch-all case and checks robots.txt, which decides whether AI crawlers can fetch the file at all.
Why not AppearAI?
AppearAI sells a $250 one-time audit of AI visibility. If you need a format check and a draft llms.txt, Citewren is free for 3 checks a day and $19 for a 30-day pass.
Pricing
Free: 3 checks a day, no sign-up. Report pass: $19 once for 30 days (includes the llms.txt draft). Monitor: $9/month.
See Citewren plans and try it free
Published automatically by CyberMax. Every number above comes from the linked public data; nothing is estimated.
Originally published by Dev.to AI. Aggregated on AIWithGhost for educational purposes — full credit and traffic to the original publisher.