llms.txt

llms.txt is the emerging standard for telling LLMs in a structured way what they may read.

What we check

Checks whether an llms.txt exists at the web root.

Why it matters

llms.txt is the emerging standard for telling LLMs in a structured way what they may read.

Common causes

The file was never created, the standard is young and the most common finding is simply: missing.
An llms.txt exists but lists outdated URLs that lead nowhere.
The file sits in a subdirectory instead of the web root, where no crawler looks for it.

The fix

Add llms.txt at the web root; list relevant content for LLM retrieval (spec: llmstxt.org).

Check it yourself first

The Tracking Check tests this point along with all the others, in seconds.

Start the Tracking Check →

Related checks

robots.txt →Structured data (JSON-LD) →

Asked often

What does a failing "llms.txt" check mean?

llms.txt is the emerging standard for telling LLMs in a structured way what they may read. Add llms.txt at the web root; list relevant content for LLM retrieval (spec: llmstxt.org).

How do you fix a failing "llms.txt" check?

Add llms.txt at the web root; list relevant content for LLM retrieval (spec: llmstxt.org).

The fix, delivered

Wired up in days, not sprints.

Findings from the Tracking Check go into a ranked sequence with effort estimates in the Audit Sprint, every module with an acceptance criterion.

To the service Request an Audit Sprint