Tour of Agent Protocols: MCP, A2A, AG-UI, A2UI

This session explores emerging agent protocols: MCP for tool/resource access, A2A for inter-agent communication, A2UI for UI generation, and AG-UI for frontend interaction. It explains how they work together and demonstrates practical use in frameworks like ADK for building interoperable agents.

talk.summaryAiDisclaimer

Mete AtamelGoogle

talks.description

There are many emerging protocols around agents. Model Context Protocol (MCP) standardizes how models and agents access external tools and resources. Agent2Agent Protocol (A2A) defines how agents running on diverse frameworks and platforms communicate. Agent to User Interface Protocol (A2UI) defines how agents generate UI and Agent-User Interaction Protocol (AG-UI) defines how agents communicate with frontends. In this session, we’ll deep-dive into each protocol and show how they complement each other. As a bonus, we’ll also see demos on how to use these protocols in agent frameworks such as Agent Development Kit (ADK) to give you practical knowledge to start building your own interoperable agents.

mcp

a2a

ag-ui

a2ui

talks.speakers

Mete Atamel

Google

I’m a Software Engineer and a Developer Advocate at Google in London. I build tools, demos, tutorials, and give talks to educate and help developers to be successful on Google Cloud.