From eeafde6f34c4ef4243953490c3f7a2d7a0ca6503 Mon Sep 17 00:00:00 2001
From: Ivan Shimko <vana.shimko@gmail.com>
Date: Wed, 11 Feb 2026 08:30:05 +0100
Subject: [PATCH] docs: explicitly mention supported spec version and
 transports

Re #677
---
 README.md | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/README.md b/README.md
index d7c24cbf8..050894356 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,18 @@
 
 ---
 
+## 🧩 Compatibility
+
+This SDK implements the A2A Protocol Specification [`v0.3.0`](https://a2a-protocol.org/v0.3.0/specification).
+
+| Transport | Client | Server |
+| :--- | :---: | :---: |
+| **JSON-RPC** | ✅ | ✅ |
+| **HTTP+JSON/REST** | ✅ | ✅ |
+| **GRPC** | ✅ | ✅ |
+
+---
+
 ## 🚀 Getting Started
 
 ### Prerequisites