Mozcode Blog

1. What is the Agent‑to‑Agent (A2A) protocol?

Originating from Google’s open specification, A2A defines a lean JSON‑RPC envelope that lets autonomous agents share intents, stream partial results and report progress in real time. By speaking A2A, you can mix and match agents written in any language or framework without inventing yet another bespoke API.

2. Why pair A2A with Microsoft Semantic Kernel?

Semantic Kernel (SK) gives C# developers a first‑class toolkit for wrapping LLM prompts as skills, composing them into pipelines and injecting traditional .NET code where it still shines. When you bolt A2A on top, each SK instance becomes a portable micro‑agent whose skills are instantly discoverable and callable by its peers.

What is Semantic Kernel?

Semantic Kernel is a lightweight and modular open-source SDK from Microsoft that helps developers integrate large language models (LLMs) into their applications in a seamless and extensible way.

Why Use Semantic Kernel?

While many SDKs enable chat or text generation, Semantic Kernel goes further by offering a framework to define and organise your app's capabilities as plugins, which the AI can invoke. It’s designed with enterprise needs in mind—telemetry, logging, and modular design come built-in. It supports automatic function calling, multi-turn dialogue, and integration with tools like Microsoft 365 Copilot.