A2A Protocol
An open protocol and reference implementation for interoperable communication and task exchange between independently built agents.
Editorial research profile
What problem does this project address?
Focuses on how independent agents discover one another, exchange work, route messages, and coordinate state.
An open protocol and reference implementation for interoperable communication and task exchange between independently built agents.
Multi-agent core
How do the agents coordinate?
Protocol
Protocol is recorded as a coordination characteristic in this project's reviewed taxonomy.
Interoperability
Interoperability is recorded as a coordination characteristic in this project's reviewed taxonomy.
Application fit
Where can it be useful?
Representative use cases
- Connect agents implemented by different teams, runtimes, or model stacks.
- Introduce explicit routing, discovery, or interoperability into an existing agent platform.
- Separate communication infrastructure from domain-specific agent logic.
Why it may be worth examining
- Addresses a cross-cutting runtime or operational concern that can support several agent applications.
- The project exposes 2 recorded coordination characteristics, making their combination easier to examine.
- Its self-hosting classification supports code inspection, internal experiments, and tighter data boundaries.
Engineering adoption guide
What should you verify before adoption?
Project-level trade-offs
- Infrastructure value depends on integration quality and operational reliability, not only feature breadth.
- The project was active at the latest editorial review, but release cadence and issue health should still be checked.
- Multi-agent results depend heavily on models, prompts, tools, data, and evaluation design; revalidate with representative tasks.
Technical and licensing facts
- Recorded as self-hostable; verify model, storage, and external service dependencies before adoption.
- The primary implementation language is TypeScript; assess extension and maintenance cost against your team's stack.
- The recorded license is Apache-2.0; confirm the repository's full license text and dependency licenses before formal use.
Recommended evaluation checklist
- 1 Inspect delivery guarantees, identity, authorization, and failure recovery.
- 2 Verify protocol compatibility and the maturity of available SDKs.
- 3 Test behavior under partial failure, duplicate messages, and network delay.
Traceable information
Research basis and freshness
Sources used for this profile
- Official GitHub repository and public metadata
- Official project website or documentation when available
- Repository-verifiable multi-agent mechanism and project scope
- This directory's normalized taxonomy, status, and adoption dimensions
- Last reviewed
- 2026-07-20
- Status
- Active
- GitHub Stars
- Not synced
- Archived
- No
Note: This page supports open-source discovery and engineering evaluation. It is not security, medical, legal, or financial advice. Capabilities and maintenance status may change after review; verify the official repository and documentation before adoption.
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