diff --git a/litellm/llms/a2a/chat/transformation.py b/litellm/llms/a2a/chat/transformation.py
index 3f1f3296cab..0a3b5f877ea 100644
--- a/litellm/llms/a2a/chat/transformation.py
+++ b/litellm/llms/a2a/chat/transformation.py
@@ -108,9 +108,14 @@ class A2AConfig(BaseConfig):
         """
         Map OpenAI parameters to A2A parameters.
         
-        For A2A protocol, we don't need to map most parameters since
-        they're handled in the transform_request method.
+        For A2A protocol, we need to map the stream parameter so
+        transform_request can determine which JSON-RPC method to use.
         """
+        # Map stream parameter
+        for param, value in non_default_params.items():
+            if param == "stream" and value is True:
+                optional_params["stream"] = value
+        
         return optional_params
     
     def validate_environment(
@@ -222,8 +227,9 @@ class A2AConfig(BaseConfig):
         
         # Build JSON-RPC 2.0 request
         # For A2A protocol, the method is "message/send" for non-streaming
-        # and "message/stream" for streaming (handled by optional_params["stream"])
-        method = "message/stream" if optional_params.get("stream") else "message/send"
+        # and "message/stream" for streaming
+        stream = optional_params.get("stream", False)
+        method = "message/stream" if stream else "message/send"
         
         request_data = {
             "jsonrpc": "2.0",
diff --git a/litellm/llms/a2a/common_utils.py b/litellm/llms/a2a/common_utils.py
index d45f2251462..116e1205409 100644
--- a/litellm/llms/a2a/common_utils.py
+++ b/litellm/llms/a2a/common_utils.py
@@ -114,6 +114,7 @@ def extract_text_from_a2a_response(
     # 2. Nested message: {"result": {"message": {"parts": [...]}}}
     # 3. Task with artifacts: {"result": {"kind": "task", "artifacts": [{"parts": [...]}]}}
     # 4. Task with status message: {"result": {"kind": "task", "status": {"message": {"parts": [...]}}}}
+    # 5. Streaming artifact-update: {"result": {"kind": "artifact-update", "artifact": {"parts": [...]}}}
     
     # Check if result itself has parts (direct message)
     if "parts" in result:
@@ -124,6 +125,13 @@ def extract_text_from_a2a_response(
     if message:
         return extract_text_from_a2a_message(message, depth=0, max_depth=max_depth)
     
+    # Check for streaming artifact-update (singular artifact)
+    artifact = result.get("artifact")
+    if artifact and isinstance(artifact, dict):
+        return extract_text_from_a2a_message(
+            artifact, depth=0, max_depth=max_depth
+        )
+    
     # Check for task status message (common in Gemini A2A agents)
     status = result.get("status", {})
     if isinstance(status, dict):
@@ -133,7 +141,7 @@ def extract_text_from_a2a_response(
                 status_message, depth=0, max_depth=max_depth
             )
     
-    # Handle task result with artifacts
+    # Handle task result with artifacts (plural, array)
     artifacts = result.get("artifacts", [])
     if artifacts and len(artifacts) > 0:
         first_artifact = artifacts[0]