Verified project record

a2aproject/A2A

An open protocol that enables AI agents built with diverse, separate frameworks to communicate and collaborate without exposing their internal state, memory, or tools. It uses JSON-RPC 2.0 over HTTP(S) to standardize interactions between opaque agentic applications.

Project overview

Project type: AI Agent · Infrastructure
Use cases: Automation
Deployment: Refer to project documentation
License: Apache-2.0

Best for

Developers building multi-agent systems who need a standardized API protocol for inter-agent communication.
Enterprise teams integrating opaque agents from different vendors without exposing internal memory or tools.

Key capabilities

Defines agent communication using JSON-RPC 2.0 over HTTP(S).
Defines exchange of text, files, and structured JSON data between agents.
Enables agents to collaborate securely on long-running tasks without exposing their internal state, memory, or tools.

Limitations and risks

GPU needs, minimum hardware, operating systems, and external service dependencies are not documented.
Telemetry, data boundary policies, and cost dependencies are not documented.

Getting started

The repository points users to protocol documentation, a specification, separate SDK repositories, and samples, but does not document a coherent first-success setup route for the repository itself.

Evidence and sources

GitHub project description: Agent2Agent (A2A) is an open protocol enabling communication and interoperability between opaque agentic applications.
README: The Agent2Agent (A2A) protocol addresses a critical challenge in the AI landscape: enabling gen AI agents, built on diverse frameworks by different companies running on separate s…
README: With A2A, agents can: - Discover each other's capabilities. - Negotiate interaction modalities (text, forms, media). - Securely collaborate on long-running tasks. - Operate withou…
README: - **Standardized Communication:** JSON-RPC 2.0 over HTTP(S). - **Agent Discovery:** Via "Agent Cards" detailing capabilities and connection info. - **Flexible Interaction:** Suppo…
Release: v1.0.1

Reviewed at: 2026-07-17T10:45:56Z