Engineering Glossary

What is Agent-to-Agent (A2A) Protocol?

The network standard for machine-to-machine discovery and negotiation.

Definition

A decentralized protocol utilizing /.well-known/agent.json manifests that allows autonomous AI systems to discover business capabilities, negotiate pricing, and execute multi-turn verification across the open web.

Key Benefits

Decentralized discovery
Asynchronous negotiation
Cryptographic verification