--- title: Library canonical_url: https://tkmstudio.com/library language: en last_updated: 2026-10-12 organization: TKM Studio, AI Visibility & Adoption Studio, Madrid, working worldwide --- # Library: how AI visibility actually works Reference articles on Answer Share, machine readable infrastructure and how AI engines select what they cite. Written from methodology we run in production, on our own brands and on client builds. ## Articles - [What is Answer Share?](https://tkmstudio.com/library/what-is-answer-share) -> https://tkmstudio.com/md/en/what-is-answer-share.md The visibility metric of the AI answer era: definition, measurement structure, the open-intent split and what moves the score. - [Content negotiation for AI agents: serving markdown with the Accept header](https://tkmstudio.com/library/content-negotiation-for-ai-agents) -> https://tkmstudio.com/md/en/content-negotiation-for-ai-agents.md How the same URL serves a clean markdown rendition when an agent asks, why user agent triggering breaks extraction, and why prerendered HTML stays the default. - [Why AI engines cite platforms, not websites](https://tkmstudio.com/library/ai-engines-cite-platforms-not-websites) -> https://tkmstudio.com/md/en/ai-engines-cite-platforms-not-websites.md Engines justify recommendations with review platforms, directories, press and community. What the citation source pattern means for a visibility roadmap. - [Cloudflare replaced Block AI Bots: what Disallow AI Training means for Googlebot](https://tkmstudio.com/library/cloudflare-ai-crawler-controls-september-2026) -> https://tkmstudio.com/md/en/cloudflare-ai-crawler-controls-september-2026.md What Cloudflare changed, who it affects and how to check whether its crawler controls reach your site. - [Cloudflare /crawl now enforces Content Signals: what use=reference and ai-train=no do](https://tkmstudio.com/library/content-signals-enforced-by-cloudflare-crawl) -> https://tkmstudio.com/md/en/content-signals-enforced-by-cloudflare-crawl.md Why default /crawl requests return 400, what Cloudflare enforces and what it means for AI visibility. - [Google's preferred sources button: the Search Console setting behind the AI Mode badge](https://tkmstudio.com/library/google-preferred-sources-search-generative-ai-control) -> https://tkmstudio.com/md/en/google-preferred-sources-search-generative-ai-control.md What the preferred sources button does, the Search Console setting behind the AI Mode badge, and what the JavaScript button loads before any click. - [robots.txt says yes, your server says no: why AI crawlers still get refused](https://tkmstudio.com/library/robots-txt-allows-ai-crawlers-server-blocks) -> https://tkmstudio.com/md/en/robots-txt-allows-ai-crawlers-server-blocks.md Where a robots.txt yes turns into a CDN, firewall or bot protection no, why live fetchers depend on the edge, and what each access test proves. - [Cloudflare Pay Per Use: AI companies pay for the use, not the crawl](https://tkmstudio.com/library/cloudflare-pay-per-use-ai-content) -> https://tkmstudio.com/md/en/cloudflare-pay-per-use-ai-content.md What Pay Per Use is, what the announcement leaves open and what it changes for AI visibility. - [Google's UGC Fresh Data Program: who qualifies, and why most business sites do not](https://tkmstudio.com/library/google-ugc-fresh-data-program) -> https://tkmstudio.com/md/en/google-ugc-fresh-data-program.md What the program is, the six eligibility criteria, what it does not replace, and what a business website should take from it. - [How can I check my business's AI visibility?](https://tkmstudio.com/library/how-to-check-ai-visibility) -> https://tkmstudio.com/md/en/how-to-check-ai-visibility.md Three self-checks to see whether AI tools find your business, describe it correctly and can explain your services page, plus how to read the results. - [Why isn't my business showing up on ChatGPT?](https://tkmstudio.com/library/why-isnt-my-business-on-chatgpt) -> https://tkmstudio.com/md/en/why-isnt-my-business-on-chatgpt.md You rank on Google but ChatGPT names other businesses. What OpenAI and Google actually say, and five things you can check yourself. - [Private AI for small firms: when a local LLM is worth it, and when a cloud plan is enough](https://tkmstudio.com/library/private-ai-local-llm-or-cloud) -> https://tkmstudio.com/md/en/private-ai-local-llm-or-cloud.md If you run a law office, a clinic or an accounting firm, you have to work out under which conditions client data may be processed by an AI tool at all. This guide explains three common approaches, what each one costs over three years for a five person office, and how to tell which one fits your constraints. It also says who should not buy a local system. - [Is ChatGPT GDPR compliant? How to assess your data protection obligations when using AI at work](https://tkmstudio.com/library/is-chatgpt-gdpr-compliant-ai-usage-policy) -> https://tkmstudio.com/md/en/is-chatgpt-gdpr-compliant-ai-usage-policy.md Your team already uses ChatGPT, Copilot or Gemini. There is no general ban, but data protection law sets conditions: which plan, which contract, which data, and written rules. This guide walks a non technical owner through the questions, compares what four providers state officially, and ends with a ten step checklist and a policy draft you can adapt. More articles are in preparation and will be published here. Contact: https://tkmstudio.com/contact