Fix Missing llms.txt
A missing llms.txt finding means the scanner could not fetch a useful agent-readable index from the canonical site root.
- Surface
- Fix guide
- Scope
- Public web evidence
- Auth
- None required
- Schema
- TechArticle
Answer first
What the issue means
The root /llms.txt file was missing, blocked, redirected incorrectly, or not served as plain text from the canonical production origin.
Detail 01
Exact fix
Create a short Markdown index at /llms.txt with links to the homepage, methodology or docs, tools, policies, and any longer /llms-full.txt context file.
Detail 02
Verify
Fetch the file with curl, confirm a 200 text/plain response, link it from robots.txt or response Link headers, then re-run the llms.txt checker.
FAQ
Common questions
- Is llms.txt required?
- No. It is not required by Google or general SEO, but it is a practical map for AI assistants and agent workflows.
- What should llms.txt contain?
- Keep it short: a product summary, grouped canonical links, and enough descriptions for an assistant to choose the right source quickly.