A2A Java SDK

The A2A Java SDK is an official Java library for building and running agentic applications as Agent2Agent protocol servers and clients, with JSON-RPC, gRPC and REST transport support.

Agent frameworks

Visit website a2aproject.github.io

The A2A Java SDK is a multi-module Maven library implementing the Agent2Agent (A2A) protocol for Java. It provides server support for running a Java agentic application as an A2A server, and client support for talking to any A2A-compliant agent, over JSON-RPC, gRPC and REST transports.

Community-contributed integrations wire the SDK into Quarkus, which holds the project's reference implementations for all three transports, and into Jakarta EE runtimes supporting the Web Profile. Extra modules add OpenTelemetry tracing, a JPA-backed task store, a Kafka-based replicated queue manager, and Vert.x and Android HTTP clients. It requires Java 17 or later and builds with Maven; gRPC classes are regenerated from a copy of the A2A protobuf specification kept in the spec-grpc module.

More in Agent frameworks

See all 902

Recurse
recurse.run
A serverless harness that lets a coding agent design, test, and deploy its own specialist sub-agents as tools, MCP servers, or bots, defined by a schema-validated manifest.
- Agent frameworks
ProofForge
shulgin.is-a.dev
An AI-agent pipeline that decomposes a mathematics problem, proves each piece, and formalizes the result in Lean 4 and Mathlib until the Lean kernel accepts it, with six of its proofs already merged into Google DeepMind's formal-conjectures repository.
- Agent frameworks
local-coder
github.com
Builds a local coding-agent team on top of Ollama and OpenCode by detecting the machine's hardware, recommending models for seven specialist roles, and testing whether each assigned model can actually use tools, edit a repository and pass verification.
- Coding agents
- Agent frameworks

More in Agent frameworks

Recurse

ProofForge

local-coder

Cookies