Agent Development Kit(ADK)

An easy-to-use and powerful framework to build AI agents.

src/google/adk/tools/retrieval/base_retrieval_tool.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 google.genai import types
+from typing_extensions import override
+
+from ..base_tool import BaseTool
+
+
+class BaseRetrievalTool(BaseTool):
+
+  @override
+  def _get_declaration(self) -> types.FunctionDeclaration:
+    return types.FunctionDeclaration(
+        name=self.name,
+        description=self.description,
+        parameters=types.Schema(
+            type=types.Type.OBJECT,
+            properties={
+                'query': types.Schema(
+                    type=types.Type.STRING,
+                    description='The query to retrieve.',
+                ),
+            },
+        ),
+    )