ProtocolExperimentalA2A

agent-to-agent-ts

Name: agent-to-agent-ts
Rating: 3.0 (33 reviews)
Author: A2A-tools

by A2A-tools

TypeScript gRPC implementation of the A2A protocol with AgentCard and CLI

TypeScript

Updated May 21, 2026

Stars

187

Forks

View on GitHub

Overview

Implements an agent-to-agent (A2A) protocol in TypeScript with gRPC transport, AgentCard identities, task primitives, and a CLI. Provides a Node 22+ SDK and reference runtime that serializes agent messages over grpc-js and exposes task lifecycle hooks for delegation and result exchange. Includes command-line tools and example flows so teams can run multi-agent interactions locally or in CI as a starting point for production integrations. This reference runtime aligns with the Open Agent Specification, serving as a runnable reference for Open Agent tooling and interoperability Open Agent Specification.

Key Benefits

As agents coordinate and delegate, a consistent A2A protocol is essential to reason about trust, provenance, and failure modes. This implementation gives teams a concrete, TypeScript-native stack to capture agent identities (Agent Registry Pattern), task handoffs, and message traces that are essential signals for multi-agent trust and agent-to-agent evaluation. Until A2A becomes standardized, having a runnable reference helps teams instrument interaction logging and build reproducible evaluation pipelines for agent track record and RepKit-style reputation tooling.

Ideal For

Teams prototyping or standardizing agent-to-agent messaging in Node.js who need a runnable reference stack for identity, delegation, and tracing.

Real-World Examples

Prototyping secure agent-to-agent message flows and task delegation in Node.js
Instrumenting agent interactions to capture provenance for agent track record and evaluation
Running local multi-agent integration tests and CI-driven A2A scenarios via the included CLI

Explore evaluation patterns

Methods to assess this tool