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No validator exists for llms.txt — here's the manual checklist

This story is from 2026-09-09. It is preserved in the archive; the latest stories are on the live feed.

llms.txt has no official validator: the spec at llmstxt.org is a proposal, not a ratified standard shipped with a test suite. Third-party checkers exist, but they read syntax — they miss the three things that actually stop the file from working: your server returns it as an HTML page, the links are…

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  1. 2026-09-09 16:07 · DEV Community — AI
    No validator exists for llms.txt — here's the manual checklist

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