Create a developer folder and add samples.

PiperOrigin-RevId: 755885332

contributing/samples/mcp_agent/__init__.py

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+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from . import agent

contributing/samples/mcp_agent/agent.py

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+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+import os
+
+from google.adk.agents.llm_agent import LlmAgent
+from google.adk.tools.mcp_tool.mcp_toolset import MCPToolset, StdioServerParameters
+
+
+async def create_agent():
+  """Gets tools from MCP Server."""
+  tools, exit_stack = await MCPToolset.from_server(
+      connection_params=StdioServerParameters(
+          command='npx',
+          args=[
+              '-y',  # Arguments for the command
+              '@modelcontextprotocol/server-filesystem',
+              os.path.dirname(os.path.abspath(__file__)),
+          ],
+      )
+  )
+
+  agent = LlmAgent(
+      model='gemini-2.0-flash',
+      name='enterprise_assistant',
+      instruction='Help user accessing their file systems',
+      tools=tools,
+  )
+  return agent, exit_stack
+
+
+root_agent = create_agent()