feat(web): Add /health and /version endpoints to ADK web server

These endpoints provide basic health checks and version information for the running ADK server, including the ADK version and Python runtime details. The version information will be used to generate ADK conformance test report.

Co-authored-by: Liang Wu <wuliang@google.com>
PiperOrigin-RevId: 868283421

Author: wuliang229

src/google/adk/cli/adk_web_server.py

@@ -20,6 +20,7 @@
 import json
 import logging
 import os
+import sys
 import time
 import traceback
 import typing
@@ -88,6 +89,7 @@
 from ..sessions.base_session_service import BaseSessionService
 from ..sessions.session import Session
 from ..utils.context_utils import Aclosing
+from ..version import __version__
 from .cli_eval import EVAL_SESSION_ID_PREFIX
 from .utils import cleanup
 from .utils import common
@@ -757,6 +759,18 @@ async def internal_lifespan(app: FastAPI):
           allow_headers=["*"],
       )
 
+    @app.get("/health")
+    async def health() -> dict[str, str]:
+      return {"status": "ok"}
+
+    @app.get("/version")
+    async def version() -> dict[str, str]:
+      return {
+          "version": __version__,
+          "language": "python",
+          "language_version": f"{sys.version_info.major}.{sys.version_info.minor}.{sys.version_info.micro}",
+      }
+
     @app.get("/list-apps")
     async def list_apps(
         detailed: bool = Query(

tests/unittests/cli/test_fast_api.py

@@ -1530,5 +1530,23 @@ def test_builder_save_rejects_traversal(builder_test_client, tmp_path):
   assert not (tmp_path / "app" / "tmp" / "escape.yaml").exists()
 
 
+def test_health_endpoint(test_app):
+  """Test the health endpoint."""
+  response = test_app.get("/health")
+  assert response.status_code == 200
+  assert response.json() == {"status": "ok"}
+
+
+def test_version_endpoint(test_app):
+  """Test the version endpoint."""
+  response = test_app.get("/version")
+  assert response.status_code == 200
+  data = response.json()
+  assert "version" in data
+  assert "language" in data
+  assert data["language"] == "python"
+  assert "language_version" in data
+
+
 if __name__ == "__main__":
   pytest.main(["-xvs", __file__])