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Specifications Fresh
LLM-LD is a family of specifications for AI-readable websites. Each spec is independent, open, and free to implement.
Published Specifications
These specs are live, implemented across 100+ sites, and ready for adoption.
LLM-LD 1.0 -- Core Specification
Status: Draft | Published: February 2026 | License: CC BY 4.0 | Maintained by: CAPXEL
The primary standard. Defines llm-index.json -- a single file at a well-known path that gives AI systems everything they need to understand a website. Covers conformance levels, required properties, verification, and the complete data model.
Read the LLM-LD 1.0 Specification
ADP 1.0 -- AI Discovery Page
Status: Draft | Published: February 2026 | License: CC BY 4.0
Defines the HTML discovery page that bridges the human web to the AI layer. The AI Discovery Page lives on a site's main domain and directs AI crawlers to structured data, the AI subdomain, and the LLM Disco Network. The page that makes the network work.
Read the ADP 1.0 Specification
LLMs.txt 1.0 -- Plain-Text AI Manifest
Status: Draft | Published: February 2026 | License: CC BY 4.0
Defines the plain-text Markdown file that gives AI systems a concise orientation to a business website. Formalizes the llms.txt format already in widespread use across the SEO and GEO communities -- with a predictable section structure, metadata header block, and defined vocabulary optimized for business discovery.
Read the LLMs.txt 1.0 Specification
Roadmap
Future specifications currently in development.
Entities 1.0 -- In Development
Standard format for entity files -- people, products, services, locations. Structured relationships that give AI systems the connections between what you offer and how it all fits together.
Feeds 1.0 -- In Development
Real-time update feeds for AI crawlers. Notify AI systems when content changes without waiting for the next crawl cycle. Push instead of pull.
New to LLM-LD?
Start with the Guide for a conceptual overview, or jump straight to the Quick Start to implement in 5 minutes. The specs are the formal reference -- the guides are the explanation.