A2A protocol roadmap¶
Last updated: Sep 15, 2026
Near-term initiatives¶
- v1.1 Protocol Enhancements & Core Robustness (#1991): Advance protocol version 1.1 features by refining task timeline specifications, standardizing event filtering mechanisms for backward compatibility, and establishing clear guidelines for handling agent messages received during working states.
- Bidirectional (BiDi) Streaming (#1995): Introduce robust streaming capabilities to support real-time artifact updates, role management, and continuous multi-turn messaging while agents are actively executing tasks.
- A2A CLI and Coding Harness Integration (#1929): Deliver the new A2A CLI tool to bridge the adoption gap in coding harness tools. The CLI's client interface provides a seamless balance for exchanging messages between intelligence agents and A2A instances.
- Elicitation & Multi-Turn Workflows (#2149, #2143): Explore structured human-in-the-loop interaction models (#2149) and multi-round negotiation patterns informed by telecom industry use cases (#2143) to support complex, multi-turn agent collaboration.
Longer term (3-6 month period) roadmap¶
Governance¶
The TSC looks to streamline opportunities for contribution through A2A extensions, Samples and participation.
Validation¶
As the A2A ecosystem matures, it becomes critical for the A2A community to have tools to validate their agents. The community has launched two efforts to help with validation. Learn more about A2A Inspector and the A2A Protocol Technology Compatibility Kit (TCK).
SDKs¶
A2A Project currently hosts SDKs in six languages (Python, Go, JS, Java, .NET, and Rust).
Community best practices¶
As companies and individuals deploy A2A systems at an increasing pace, we are looking to accelerate the learning of the community by collecting and sharing the best practices and success stories that A2A enabled.