# Card Network Architecture Specification > Agent-readable protocol specification for card-based context networks, typed edges, and composable AI agent knowledge systems. ## Key URLs - Specification home: https://cardnetwork.org/ - Card schema: https://cardnetwork.org/spec/v1.1/card-schema.json - Edge schema: https://cardnetwork.org/spec/v1.1/edge-schema.json - API reference: https://cardnetwork.org/spec/v1.1/api-reference.md - Whitepaper: https://cardnetwork.org/docs/whitepaper.md - Cards manifest: https://cardnetwork.org/.well-known/cards.json - MCP manifest: https://cardnetwork.org/.well-known/mcp.json - Sitemap: https://cardnetwork.org/sitemap.xml ## Core concepts - Atomic cards with compact, agent-readable bodies - Typed graph edges: stack, link, embed, branch, sync, depends, produces - Context graph traversal for low-power and edge AI - Open schema definitions for interoperable card networks