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# llms.txt checker and generator

Check a domain's llms.txt against the llmstxt.org convention with capped link checks, and generate a new file from link lists.

Check a domain's llms.txt, or generate a new file from your link lists.

llms.txt is a community convention from llmstxt.org, not a standard. A file that passes every check here gains no ranking and no guaranteed AI citation; the convention only proposes a shape for a markdown index that language models can read. The checker validates that shape: one H1 title, an optional blockquote summary, H2 sections with markdown link lists, and it probes up to 20 listed links for reachability. The proxy hands back at most the first 4,096 characters of the response, so a larger file is checked on that prefix and the report says so. The generator parses each line strictly as Title | URL | optional description and reports every line it cannot use.
Options

## More web & auth tools

- [robots.txt tester](/web/robots)
- [AI robots policy](/web/ai-bot-robots-txt-policy-builder)
[All web & auth tools](/web)

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Canonical HTML: https://nutter.tools/web/llms-txt-checker
Markdown version: https://nutter.tools/web/llms-txt-checker.md
Plain-text version: https://nutter.tools/web/llms-txt-checker.txt
Agent index: https://nutter.tools/llms.txt