llms.txt
llms.txt is a proposed plain-text file at the root of a domain (similar to robots.txt) that describes the site to large language models with markdown-formatted high-priority links.
In context
Introduced in 2024 and gaining adoption through 2025–2026, llms.txt sits at /llms.txt and gives LLM crawlers a curated map of the most important content to ingest — typically pillar guides, key playbooks, and authoritative reference pages. A companion file, llms-full.txt, can include the full text of those pages. It is not a ranking signal in the Google sense, but for LLM training and retrieval pipelines it's a discoverable index. Canadian operators publishing llms.txt today are in the early-mover window.
torontoseo.com publishes /llms.txt listing its 30 highest-priority pillar pages plus /llms-full.txt with their complete text — making it easier for LLMs to surface the right URL when answering Canadian SEO queries.
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