diff --git a/google/genai/_gaos/resources/interactions/tool/__init__.py b/google/genai/_gaos/resources/interactions/tool/__init__.py
index 4f63f2c5c..fd9decc4c 100644
--- a/google/genai/_gaos/resources/interactions/tool/__init__.py
+++ b/google/genai/_gaos/resources/interactions/tool/__init__.py
@@ -23,6 +23,7 @@
 from ....types.interactions.googlesearch import GoogleSearch
 from ....types.interactions.mcpserver import MCPServer
 from ....types.interactions.retrieval import Retrieval
+from ....types.interactions.toolsearch import ToolSearch
 from ....types.interactions.urlcontext import URLContext
 from . import retrieval
 
@@ -34,6 +35,7 @@
     "GoogleSearch",
     "MCPServer",
     "Retrieval",
+    "ToolSearch",
     "URLContext",
     "retrieval",
 ]
diff --git a/google/genai/_gaos/types/interactions/__init__.py b/google/genai/_gaos/types/interactions/__init__.py
index 011881a31..2ee8968bd 100644
--- a/google/genai/_gaos/types/interactions/__init__.py
+++ b/google/genai/_gaos/types/interactions/__init__.py
@@ -361,6 +361,7 @@
     from .tool import Tool, ToolParam, UnknownTool
     from .toolchoiceconfig import ToolChoiceConfig, ToolChoiceConfigParam
     from .toolchoicetype import ToolChoiceType
+    from .toolsearch import ToolSearch, ToolSearchParam
     from .transcriptionconfig import TranscriptionConfig, TranscriptionConfigParam
     from .turn import Turn, TurnContent, TurnContentParam, TurnParam
     from .urlcitation import URLCitation, URLCitationParam
@@ -709,6 +710,8 @@
     "ToolChoiceParam",
     "ToolChoiceType",
     "ToolParam",
+    "ToolSearch",
+    "ToolSearchParam",
     "TranscriptionConfig",
     "TranscriptionConfigParam",
     "Transform",
@@ -1092,6 +1095,8 @@
     "ToolChoiceConfig": ".toolchoiceconfig",
     "ToolChoiceConfigParam": ".toolchoiceconfig",
     "ToolChoiceType": ".toolchoicetype",
+    "ToolSearch": ".toolsearch",
+    "ToolSearchParam": ".toolsearch",
     "TranscriptionConfig": ".transcriptionconfig",
     "TranscriptionConfigParam": ".transcriptionconfig",
     "Turn": ".turn",
diff --git a/google/genai/_gaos/types/interactions/tool.py b/google/genai/_gaos/types/interactions/tool.py
index edc5ffcd7..e13a82749 100644
--- a/google/genai/_gaos/types/interactions/tool.py
+++ b/google/genai/_gaos/types/interactions/tool.py
@@ -27,6 +27,7 @@
 from .googlesearch import GoogleSearch, GoogleSearchParam
 from .mcpserver import MCPServer, MCPServerParam
 from .retrieval import Retrieval, RetrievalParam
+from .toolsearch import ToolSearch, ToolSearchParam
 from .urlcontext import URLContext, URLContextParam
 from functools import partial
 from pydantic import ConfigDict
@@ -40,6 +41,7 @@
     Union[
         CodeExecutionParam,
         URLContextParam,
+        ToolSearchParam,
         GoogleSearchParam,
         FunctionParam,
         FileSearchParam,
@@ -72,6 +74,7 @@ class UnknownTool(BaseModel):
     "file_search": FileSearch,
     "google_maps": GoogleMaps,
     "retrieval": Retrieval,
+    "tool_search": ToolSearch,
 }
 
 
@@ -86,6 +89,7 @@ class UnknownTool(BaseModel):
         FileSearch,
         GoogleMaps,
         Retrieval,
+        ToolSearch,
         UnknownTool,
     ],
     BeforeValidator(
diff --git a/google/genai/_gaos/types/interactions/toolsearch.py b/google/genai/_gaos/types/interactions/toolsearch.py
new file mode 100644
index 000000000..7ad0850c6
--- /dev/null
+++ b/google/genai/_gaos/types/interactions/toolsearch.py
@@ -0,0 +1,48 @@
+# Copyright 2026 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.
+#
+# pyformat: disable
+
+"""Code generated by Speakeasy (https://speakeasy.com). DO NOT EDIT."""
+
+from __future__ import annotations
+from .. import BaseModel
+from ...utils import validate_const
+import pydantic
+from pydantic.functional_validators import AfterValidator
+from typing import Literal
+from typing_extensions import Annotated, TypedDict
+
+
+class ToolSearchParam(TypedDict):
+    r"""Tool search configuration."""
+
+    type: Literal["tool_search"]
+
+
+class ToolSearch(BaseModel):
+    r"""Tool search configuration."""
+
+    type: Annotated[
+        Annotated[
+            Literal["tool_search"], AfterValidator(validate_const("tool_search"))
+        ],
+        pydantic.Field(alias="type"),
+    ] = "tool_search"
+
+
+try:
+    ToolSearch.model_rebuild()
+except NameError:
+    pass