{"pageUrl":"https://promagen.com/how-to-create-llms-txt","lastModified":"2026-05-10","provenanceHash":"sha256:96f0c19cb07151fbe3d8b945336b614ee4efe124d00a52f3e1f37b591105761a","provenanceNote":"llms.txt spec is published at https://llmstxt.org/. As of 2026 no major AI engine publicly documents external llms.txt ingestion as a guaranteed crawl or retrieval signal; treat vendor support as emerging or unconfirmed unless vendor docs explicitly say otherwise.","claims":[{"id":"claim-llmstxt-root-location","statement":"The llms.txt spec at llmstxt.org defines the file location as the site root (/llms.txt) served with Content-Type: text/plain; charset=utf-8.","evidenceUrl":"https://llmstxt.org/","lastVerified":"2026-05-10","hash":"sha256:cd03d1bbda7a9fb83a6dead0605eecf0f8e6a7b04c31143d204bed13782fccd7"},{"id":"claim-vendor-support-unconfirmed-for-howto","statement":"No major AI engine publicly documents external llms.txt ingestion as a guaranteed crawl or retrieval signal as of 2026. Publishing one is a low-cost hedge with positive expected value if the format becomes canonical, not a guaranteed citation lever.","evidenceUrl":"https://support.claude.com/en/articles/8896518-does-anthropic-crawl-data-from-the-web-and-how-can-site-owners-block-the-crawler","lastVerified":"2026-05-10","hash":"sha256:c5c9d828c14dc6facd7110a60adc6a5f512897d185fb3e851a04ed2f9a011ecb"},{"id":"claim-promagen-publishes-llms-txt","statement":"Promagen serves /llms.txt at site root and per-page llms-{slug}.txt routes for each live authority page, all under aggressive CDN cache headers matching the robots.txt cache discipline.","evidenceUrl":"https://promagen.com/llms.txt","lastVerified":"2026-05-10","hash":"sha256:420220ea98c126330eafec64a44842133958c86e69cb4fefcdef986885e9a7f5"}]}