llms.txt lacks version or last-updated metadata

This check looks at your llms.txt file, a text file some sites publish specifically to guide AI systems on how to read their content, for version and last-updated fields in its header. Your llms.txt is published, but it's missing those fields. AI ingestion pipelines, such as Perplexity's publisher API and ChatGPT's memory ingest, use version and last-updated fields to work out whether a cached copy of your file is stale. Without them, an AI engine can keep serving out-of-date facts about your product long after you've updated the real page. Your developer should add '> Version: 1.0' and '> Last-updated: YYYY-MM-DD' to the top of the llms.txt file, and update the date every time the content changes. This is a 30 minute task, and worth adding to your process for whenever you next update your product copy.