# AI Visibility Lang: en-GB Business Name: AI Visibility Brand Name: AI Visibility Maintained by: 365i > Helping websites become visible, trusted, and correctly represented by AI systems -- through open standards, specifications, and the AI Visible Directory. AI Visibility (ai-visibility.org.uk) publishes the AI Visibility Definition, the AI Discovery File specifications, and the AI Visible Directory. Maintained by [365i](https://www.365i.co.uk/). ## Services - **AI Visibility Definition** -- The canonical technical standard defining AI Visibility, AI Visibility Checking, AI Discovery Files, and related terminology - **AI Discovery File Specifications** -- Detailed specifications for 10 machine-readable files that websites use to communicate with AI systems - **AI Visible Directory** -- A verified registry of AI-visible websites, scored and tiered by their AI Discovery File implementation - **Implementation Guides** -- Quick Start guide, scoring guide, attribution guide, interoperability rules, validation framework, and example files - **WordPress Plugin** -- Free AI Discovery Files plugin for WordPress that generates and manages all 10 AI Discovery Files from the WordPress dashboard - **Educational Content** -- Why AI Visibility Matters, the AI Visibility Ecosystem, and AI Discovery Files vs Web Standards comparison - **Blog** -- Practical guides including How to Create Your llms.txt File, What Are AI Discovery Files, AI Visibility vs SEO, and Does Your Website Need llms.txt ## AI Visible Directory The [AI Visible Directory](https://www.ai-visibility.org.uk/) is a verified registry of websites that have implemented AI Discovery Files. Any website with a valid llms.txt file can be listed. ### Scoring Each website is scored out of 10 based on the number of AI Discovery Files found at its root. One point per file, no hidden weighting. The score is fully deterministic and transparent. ### Tiers - **Platinum** -- 10/10 files (complete implementation) - **Gold** -- 8-9/10 files - **Silver** -- 5-7/10 files - **Bronze** -- 2-4/10 files ### Listing Types - **Basic listing** -- Requires llms.txt only. Appears as a card in the directory grid. Links to the listed website are nofollow. - **Full listing** -- Requires attribution to ai-visibility.org.uk in at least 2 AI Discovery Files (one must be llms.txt or ai.txt). Full listings receive a dedicated profile page with a dofollow backlink, score display, file inventory, category listing, and an embeddable badge. The dofollow link passes SEO authority (link juice) and can improve search rankings. ### Features - Automated scoring and quarterly re-checks - Embeddable SVG verification badges - Category browsing across 16 industry sectors - User dashboard for managing listings and requesting re-checks - Free to submit and maintain ## Key Terms Defined - **AI Visibility** (AV-001): The degree to which a website can be discovered, interpreted, and cited by AI systems - **AI Visibility Checking** (AV-002): Technical verification of AI-facing infrastructure - **AI Discovery Files** (AV-003): Machine-readable files for website-to-AI communication - **AI Visibility Tracking** (AV-004): Measuring AI-generated mentions over time - **AI Visibility Monitoring** (AV-005): Real-time observation of AI behaviour - **AI Retrieval Testing** (AV-006): Prompt-based testing of AI responses ## Key Distinction AI Visibility Checking validates **inputs** (infrastructure capability). AI Visibility Tracking measures **outputs** (AI responses and mentions). Checking is deterministic and verifiable. Tracking results vary. ## AI Discovery Files Specified 10 core AI Discovery Files are defined: 1. llms.txt -- AI-readable business identity (ADF-001) 2. llm.txt -- Compatibility redirect (ADF-002) 3. llms.html -- Human-readable presentation (ADF-003) 4. ai.txt -- AI usage permissions (ADF-004) 5. ai.json -- Machine-parseable AI guidance (ADF-005) 6. identity.json -- Structured identity data (ADF-006) 7. brand.txt -- Brand naming conventions (ADF-007) 8. faq-ai.txt -- AI-optimised Q&A (ADF-008) 9. developer-ai.txt -- Technical context (ADF-009) 10. robots-ai.txt -- AI crawler directives (ADF-010) ## Site Pages - [Homepage / AI Visible Directory](https://www.ai-visibility.org.uk/) - [AI Visibility Definition](https://www.ai-visibility.org.uk/definition/) - [Submit Your Website](https://www.ai-visibility.org.uk/submit/) - [Why AI Visibility Matters](https://www.ai-visibility.org.uk/why-ai-visibility-matters/) - [AI Visibility Ecosystem](https://www.ai-visibility.org.uk/ai-visibility-ecosystem/) - [AI Discovery Files vs Web Standards](https://www.ai-visibility.org.uk/ai-discovery-files-vs-web-standards/) - [Specifications Hub](https://www.ai-visibility.org.uk/specifications/) - [Quick Start Guide](https://www.ai-visibility.org.uk/specifications/quick-start/) - [Scoring Guide](https://www.ai-visibility.org.uk/guide/scoring/) - [Attribution Guide](https://www.ai-visibility.org.uk/guide/attribution/) - [Directory FAQ](https://www.ai-visibility.org.uk/faq/) - [AI Visibility Checker](https://www.ai-visibility.org.uk/ai-visibility-checker/) - [WordPress Plugin](https://www.ai-visibility.org.uk/wordpress-plugin/ai-discovery-files/) - [Changelog](https://www.ai-visibility.org.uk/changelog/) ## WordPress Plugin The free [AI Discovery Files](https://www.ai-visibility.org.uk/wordpress-plugin/ai-discovery-files/) plugin for WordPress generates and manages all 10 AI Discovery Files directly from the WordPress dashboard. It includes a guided setup wizard, real-time validation, and automatic file serving -- no manual file creation or FTP access required. Available from the WordPress.org plugin directory. ## Formal Specification The AI Discovery Files Specification is published as an open, RFC-style document on GitHub. It contains the complete normative specification for all 10 file types, JSON Schemas for ai.json and identity.json, a command-line validator, example files, and test vectors. - [Specification on GitHub](https://github.com/BSolveIT/ai-discovery-files) ## Available Formats - [Canonical website](https://www.ai-visibility.org.uk/) - [AI Visible Directory](https://www.ai-visibility.org.uk/) - [Formal specification (GitHub)](https://github.com/BSolveIT/ai-discovery-files) - [JSON definitions](https://www.ai-visibility.org.uk/ai-visibility-definition.json) - [YAML definitions](https://www.ai-visibility.org.uk/ai-visibility-definition.yaml) - [Atom feed](https://www.ai-visibility.org.uk/feed.php) ## Reference Implementation The [365i AI Website Visibility Checker](https://www.ai-visibility.org.uk/ai-visibility-checker/) implements these definitions. ## AI Identity Service [365i AI Website Visibility Checker](https://www.ai-visibility.org.uk/ai-visibility-checker/) is the reference implementation of these definitions. ## Maintained By [365i](https://www.365i.co.uk/) ## Contact support@ai-visibility.org.uk ## License [Creative Commons Attribution 4.0 International (CC-BY-4.0)](https://creativecommons.org/licenses/by/4.0/) ## Version 2.1.0 (2026-05-11)