A2A protocol
A protocol for a client agent to discover and exchange task-related messages with a remote agent.
What A2A protocol does not show
It complements tool protocols but does not make autonomous delegation trustworthy.
Terms this definition uses
Related terms in Agents and protocols
How autonomous agents plan, remember, call tools and talk to each other, including MCP and A2A, and where each step can go wrong.
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Questions about A2A protocol
What is A2A protocol?
A protocol for a client agent to discover and exchange task-related messages with a remote agent.
What does A2A protocol not show or guarantee?
It complements tool protocols but does not make autonomous delegation trustworthy.
Which area of the glossary does A2A protocol belong to?
Agents and protocols: How autonomous agents plan, remember, call tools and talk to each other, including MCP and A2A, and where each step can go wrong.
← JSON-RPC · A2A client →
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