AI-native discovery
- /llms.txt text/plain (llmstxt.org spec) Curated, prose-friendly map for LLM citation. ChatGPT / Claude / Perplexity fetch this first.
- /sitemap.xml application/xml (sitemaps.org) Canonical URL list with lastmod + priority. Submitted to Google Search Console + Bing Webmaster.
- /robots.txt text/plain Open-by-default policy. Major LLM crawlers (GPTBot, ClaudeBot, PerplexityBot, etc.) explicitly allowed.