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ProtocolReferenceA2A
ra2a
by qntx
Rust SDK implementing the Agent2Agent (A2A) protocol
Rust
Updated Jul 17, 2026
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How It Works
Implements a Rust SDK for the Agent2Agent (A2A) protocol to enable direct agent-to-agent communication. Provides type-safe message structures, connection handling, and helpers for signing and verifying messages so Rust agents can speak the A2A wire format. Includes examples and utilities for building A2A-compatible agents and gateways. (See the A2A Protocol Pattern for integration guidance, and the Agent-to-Agent Protocol reference to align with the standard.)
Key Benefits
As agents coordinate and delegate, a standard A2A transport is required to reason about who said what and to capture trust signals at the protocol layer. A Rust reference SDK makes it easier to build performant agents and gateways that emit verifiable interaction logs useful for reputation and post-hoc evaluation. Making the protocol accessible in a systems language helps integrate agent interaction tracing into production stacks where reliability and signing matter. See the Agent-to-Agent Protocol term for foundational concepts.
When to Use
Developers building Rust agents, gateways, or infrastructure that need a reference A2A implementation with message signing and typed payloads. For a formal reference, see the Agent-to-Agent Protocol.
Applications
- Implementing a Rust agent that speaks the A2A protocol with signed messages
- Building gateways or proxies that translate between local agent APIs and A2A wire format
- Capturing verifiable interaction logs for downstream reputation or evaluation systems
Topics
a2aa2a-protocolrustx402
Keywords
multi-agent trusta2aagent-to-agent evaluationrust