ADP v2.1 Compliant
AI Discovery Protocol
Endpoints
20 machine-readable endpoints that help AI assistants like ChatGPT, Claude, Perplexity, and Gemini discover, understand, and cite your content.
20
Endpoints
11
AI Crawlers Tracked
0
Auth Required
<50ms
Response Time
Key Highlights
✓
All 20 endpoints are free to access with no authentication required
✓
Full CORS support (Access-Control-Allow-Origin: *) for cross-origin requests
✓
HTTP caching headers: ETag, Content-Digest (SHA-256), X-Update-Frequency
✓
Three llms.txt variants: lite (198 tokens), standard (1,247 tokens), full (13,451 tokens)
✓
Real-time news feeds update instantly when new press releases are published
Five-Layer Optimization Stack
This page implements all 5 layers of AI discoverability
Layer 1
SEO
✓
Layer 2
AEO
✓
Layer 3
GEO
✓
Layer 4
LLMO
✓
Layer 5
ADP
✓
All 20 Endpoints
Click any endpoint to view the live response
Core ADP Endpoints
/.well-known/ai.json
Main ADP manifest with protocol version, capabilities, and endpoint discovery
/.well-known/security.txt
Security contact and vulnerability disclosure information
/robots.txt
AI-friendly crawler rules allowing all major AI crawlers
/ai-sitemap.xml
Structured sitemap optimized for AI content discovery
/opensearch.xml
Browser search plugin integration for direct site search
Content Feeds
AI-Optimized Content
/llms.txt
Standard site overview for LLM context (1,247 tokens)
/llms-full.txt
Comprehensive crawlable content (13,451 tokens)
/llms-lite.txt
Minimal site overview (198 tokens)
/ai-discovery.json
Machine-readable meta-index entry point for AI systems
/ai-discovery.md
Human-readable ADP documentation in Markdown
/knowledge-graph.json
Schema.org JSON-LD entity catalog with relationships
News-Specific Endpoints
Frequently Asked Questions
The AI Discovery Protocol (ADP) v2.1 is a set of machine-readable endpoints that help AI crawlers, LLMs, and discovery systems find and understand website content. Pressonify implements 20 ADP endpoints including llms.txt variants, knowledge graphs, JSON feeds, and real-time news APIs.
llms.txt is a plain text file that provides LLMs with a compact overview of your site's structure and key content. It helps AI assistants like ChatGPT, Claude, and Perplexity understand your site quickly. Pressonify offers three variants: llms.txt (1,247 tokens), llms-full.txt (13,451 tokens), and llms-lite.txt (198 tokens).
Yes, all 20 ADP endpoints are completely free to access. No authentication is required. They support CORS (Access-Control-Allow-Origin: *) for cross-origin requests and include caching headers (ETag, Content-Digest) for efficient polling.
The knowledge-graph.json endpoint provides a Schema.org JSON-LD catalog of all entities on the site—organizations, articles, products, and their relationships. AI systems use this to understand how content pieces connect and provide more accurate citations.
Update frequencies vary by endpoint: Realtime (news feeds, updates.json), Hourly (ai-discovery.json, knowledge-graph.json), Daily (llms.txt, ai-sitemap.xml), Weekly (changelog, robots.txt), and Monthly (security.txt, opensearch.xml). Each response includes an X-Update-Frequency header.
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