Category 1 of 9

Discover What is here, and where?

Classic-web analog: sitemap, .well-known

How an agent learns that a resource, tool or agent exists at an origin, and where to find its description.

• Agent Directory Service ADS
• Agent Discovery Protocol ADP
• Agent Identity and Discovery AID
• Agent Registration and Discovery Protocol ARDP
• Agentic Resource Discovery ARD
  • AI Catalog well-known file
• agents.txt
• api-catalog: A Well-Known URI and Link Relation to Help Discovery of APIs RFC 9727
• DNS for AI Discovery DNS-AID
• DNS-Based Agent Naming DAN
• LMOS (Language Model Operating System) LMOS
• Open Agentic Schema Framework OASF

Terms

• Agent Card
• Agentmap directive
• MCP Server Card
• Well-known URI