doc: Update API doc for MCP tool to include installation instructions (#5482)

python/packages/autogen-ext/src/autogen_ext/tools/mcp/_factory.py

@@ -12,6 +12,14 @@ async def mcp_server_tools(
     This factory function connects to an MCP server and returns adapters for all available tools.
     The adapters can be directly assigned to an AutoGen agent's tools list.
 
+    .. note::
+
+        To use this function, you need to install `mcp` extra for the `autogen-ext` package.
+
+        .. code-block:: bash
+
+            pip install -U "autogen-ext[mcp]"
+
     Args:
         server_params (McpServerParams): Connection parameters for the MCP server.
             Can be either StdioServerParams for command-line tools or

python/packages/autogen-ext/src/autogen_ext/tools/mcp/_sse.py

@@ -25,6 +25,14 @@ class SseMcpToolAdapter(
     with AutoGen agents. Common use cases include integrating with remote MCP services,
     cloud-based tools, and web APIs that implement the Model Context Protocol (MCP).
 
+    .. note::
+
+        To use this class, you need to install `mcp` extra for the `autogen-ext` package.
+
+        .. code-block:: bash
+
+            pip install -U "autogen-ext[mcp]"
+
     Args:
         server_params (SseServerParameters): Parameters for the MCP server connection,
             including URL, headers, and timeouts

python/packages/autogen-ext/src/autogen_ext/tools/mcp/_stdio.py

@@ -24,6 +24,15 @@ class StdioMcpToolAdapter(
     with AutoGen agents. Common use cases include wrapping command-line tools and local services
     that implement the Model Context Protocol (MCP).
 
+    .. note::
+
+        To use this class, you need to install `mcp` extra for the `autogen-ext` package.
+
+        .. code-block:: bash
+
+            pip install -U "autogen-ext[mcp]"
+
+
     Args:
         server_params (StdioServerParams): Parameters for the MCP server connection,
             including command to run and its arguments