feat: Add ExecuteSkillScriptTool for running skill scripts

contributing/samples/skill_script_demo/__init__.py

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+# 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.
+
+from . import agent

contributing/samples/skill_script_demo/agent.py

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+# 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.
+
+"""Sample agent with multiple skills and script execution.
+
+This agent loads the Anthropic mcp-builder skill and a python-helper
+skill, exercising all skill tools: list_skills, load_skill,
+load_skill_resource, and execute_skill_script.
+"""
+
+import pathlib
+
+from google.adk import Agent
+from google.adk.code_executors.unsafe_local_code_executor import UnsafeLocalCodeExecutor
+from google.adk.skills import load_skill_from_dir
+from google.adk.tools.skill_toolset import SkillToolset
+
+_SKILLS_DIR = pathlib.Path(__file__).parent / "skills"
+
+mcp_builder_skill = load_skill_from_dir(_SKILLS_DIR / "mcp-builder")
+python_helper_skill = load_skill_from_dir(_SKILLS_DIR / "python-helper")
+
+my_skill_toolset = SkillToolset(
+    skills=[mcp_builder_skill, python_helper_skill],
+    code_executor=UnsafeLocalCodeExecutor(),
+)
+
+root_agent = Agent(
+    model="gemini-2.5-flash",
+    name="skill_script_demo_agent",
+    description=(
+        "An agent that demonstrates skill script execution using"
+        " the mcp-builder and python-helper skills."
+    ),
+    tools=[my_skill_toolset],
+)