How to Make Your Website AI-Agent Readable in 2026 (llms.txt, MCP Cards, Structured Data) You ask Perplexity a question about your niche industry. It gives a clean, well-sourced answer, citing three of your competitors. Your site, which has a definitive guide on the exact topic, is nowhere to be seen. You try again with ChatGPT, then Claude. Same result. It feels like being invisible. This isn't a failure of traditional SEO. Your rankings on Google might be fine. This is a new problem: your website isn't "agent-readable." The large language models (LLMs) that power these AI agents are increasingly the first stop for users seeking information. If they can't parse, understand, and trust your content, you don't exist in this new ecosystem. Getting cited by an AI is becoming the new "page one" ranking. This guide isn't about "using AI for SEO" fluff. It's a technical, practical manual for founders and operators who manage their own websites.…