advanced~4h
Agent Protocols: A2A, AG-UI, and the Protocol Landscape
How agents talk to other agents (A2A) and to user interfaces (AG-UI) — plus the emerging '3 protocols, one stack' landscape alongside MCP.
4
Subtopics
1
Exercises
1
Projects
5
Quiz Qs
4
Flashcards
▶📚 Prerequisites(2)
🎓 Learning objectives
- •Distinguish what MCP, A2A, and AG-UI each standardize (tool access, agent-to-agent, agent-to-UI)
- •Explain how AgentCards enable capability discovery in A2A
- •Describe the AG-UI event types that stream agent state to a frontend over SSE
- •Explain why these three protocols are complementary layers of one stack rather than competing standards
Agent Protocols: A2A, AG-UI, and the Protocol Landscape is a Pro topic
Sign in, then upgrade to Pro or Power to unlock this topic and the full AI Engineering curriculum.