Add ADK zero code example

examples/README.md

@@ -20,6 +20,7 @@ The OTLP receiver runs on port 4318 (standard OTLP HTTP port) and accepts both `
 |---------|-----------|-------------|
 | [zero-code-examples/langchain/](./zero-code-examples/langchain/) | LangChain | OpenAI |
 | [zero-code-examples/strands/](./zero-code-examples/strands/) | Strands | OpenAI |
+| [zero-code-examples/adk/](./zero-code-examples/adk/) | Google ADK | Gemini |
 
 This approach works with any framework that has OTel instrumentation: LangChain, Strands, Google ADK, etc. If your framework already emits OTel spans, you only need to add `OTLPSpanExporter` (and `OTLPLogExporter` if it uses GenAI log-based content delivery).
 
@@ -92,6 +93,7 @@ Detection checks for `gen_ai.request.model` / `gen_ai.input.messages` (GenAI sem
 |---------|-----------|-------------|-----------------|-----------------|
 | [zero-code-examples/langchain/](./zero-code-examples/langchain/) | LangChain | OpenAI | GenAI semconv (logs) | Standard OTLP export |
 | [zero-code-examples/strands/](./zero-code-examples/strands/) | Strands | OpenAI | GenAI semconv (events) | Standard OTLP export |
+| [zero-code-examples/adk/](./zero-code-examples/adk/) | Google ADK | Gemini | ADK built-in | Standard OTLP export |
 | [langchain_agent](./langchain_agent/) | LangChain | OpenAI | GenAI semconv (logs) | SDK WebSocket |
 | [strands_agent](./strands_agent/) | Strands | OpenAI | GenAI semconv (events) | SDK WebSocket |
 | [dice_agent](./dice_agent/) | Google ADK | Gemini | ADK built-in | SDK WebSocket |
@@ -190,6 +192,7 @@ cd ui && npm run dev
 # Zero-code OTLP (recommended):
 python examples/zero-code-examples/langchain/run.py
 python examples/zero-code-examples/strands/run.py
+python examples/zero-code-examples/adk/run.py
 
 # SDK examples:
 python examples/sdk_example/context_manager_example.py

examples/zero-code-examples/adk/requirements.txt

@@ -0,0 +1,5 @@
+google-adk>=1.0.0
+
+opentelemetry-sdk>=1.36.0
+opentelemetry-exporter-otlp-proto-http>=1.36.0
+python-dotenv>=1.0.0

examples/zero-code-examples/adk/run.py

@@ -0,0 +1,88 @@
+"""Run the ADK dice agent with standard OTLP export -- no agentevals SDK.
+
+Demonstrates zero-code integration: ADK auto-instruments itself through
+the global TracerProvider, so the only setup needed is a standard
+OTLPSpanExporter pointing at the agentevals receiver.
+
+Unlike the LangChain and Strands zero-code examples, ADK needs no
+instrumentor call, no LoggerProvider, and no special environment variables.
+ADK puts message content directly on span attributes (gcp.vertex.agent.*).
+
+Prerequisites:
+    1. pip install -r requirements.txt
+    2. agentevals serve --dev
+    3. export GOOGLE_API_KEY="your-key-here"
+
+Usage:
+    python examples/zero-code-examples/adk/run.py
+"""
+
+import asyncio
+import os
+import sys
+
+from dotenv import load_dotenv
+from google.adk.runners import InMemoryRunner
+from google.genai import types
+from opentelemetry import trace
+from opentelemetry.exporter.otlp.proto.http.trace_exporter import OTLPSpanExporter
+from opentelemetry.sdk.resources import Resource
+from opentelemetry.sdk.trace import TracerProvider
+from opentelemetry.sdk.trace.export import BatchSpanProcessor
+
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "..", "dice_agent"))
+from agent import dice_agent
+
+load_dotenv(override=True)
+
+
+async def main():
+    if not os.getenv("GOOGLE_API_KEY"):
+        print("GOOGLE_API_KEY not set.")
+        return
+
+    endpoint = os.environ.get("OTEL_EXPORTER_OTLP_ENDPOINT", "http://localhost:4318")
+    print(f"OTLP endpoint: {endpoint}")
+
+    os.environ.setdefault(
+        "OTEL_RESOURCE_ATTRIBUTES",
+        "agentevals.eval_set_id=dice_agent_eval,agentevals.session_name=adk-zero-code",
+    )
+
+    resource = Resource.create()
+
+    tracer_provider = TracerProvider(resource=resource)
+    tracer_provider.add_span_processor(BatchSpanProcessor(OTLPSpanExporter(), schedule_delay_millis=1000))
+    trace.set_tracer_provider(tracer_provider)
+
+    app_name = "dice_agent_app"
+    user_id = "demo_user"
+
+    runner = InMemoryRunner(agent=dice_agent, app_name=app_name)
+    session = await runner.session_service.create_session(app_name=app_name, user_id=user_id)
+
+    test_queries = [
+        "Hi! Can you help me?",
+        "Roll a 20-sided die for me",
+        "Is the number you rolled prime?",
+    ]
+
+    for i, query in enumerate(test_queries, 1):
+        print(f"\n[{i}/{len(test_queries)}] User: {query}")
+
+        content = types.Content(role="user", parts=[types.Part.from_text(text=query)])
+
+        agent_response = ""
+        async for event in runner.run_async(user_id=user_id, session_id=session.id, new_message=content):
+            if event.content.parts and event.content.parts[0].text:
+                agent_response = event.content.parts[0].text
+
+        print(f"     Agent: {agent_response}")
+
+    print()
+    tracer_provider.force_flush()
+    print("All traces flushed to OTLP receiver.")
+
+
+if __name__ == "__main__":
+    asyncio.run(main())

tests/integration/test_live_agents.py

@@ -4,7 +4,7 @@
 exercising the full pipeline including BatchSpanProcessor/BatchLogRecordProcessor
 flush timing, session grouping, and invocation extraction.
 
-Requires API keys (OPENAI_API_KEY for LangChain/Strands).
+Requires API keys (OPENAI_API_KEY for LangChain/Strands, GOOGLE_API_KEY for ADK).
 Skipped when keys are not available.
 
 Tests are synchronous because:
@@ -33,6 +33,11 @@
     reason="OPENAI_API_KEY not set",
 )
 
+_skip_no_google = pytest.mark.skipif(
+    not os.environ.get("GOOGLE_API_KEY"),
+    reason="GOOGLE_API_KEY not set",
+)
+
 
 def _run_agent(
     script: str,
@@ -186,6 +191,63 @@ def test_session_visible_via_api(self, live_servers):
         assert session_name in session_ids
 
 
+@_skip_no_google
+class TestAdkZeroCode:
+    """Run the ADK zero-code OTLP example and verify session grouping."""
+
+    def test_session_created_spans_only(self, live_servers):
+        main_port, otlp_port, mgr = live_servers
+        session_name = "e2e-adk"
+
+        result = _run_agent(
+            "examples/zero-code-examples/adk/run.py",
+            otlp_port,
+            session_name,
+        )
+        assert result.returncode == 0, f"Agent failed:\nstdout: {result.stdout}\nstderr: {result.stderr}"
+
+        wait_for_session_complete_sync(mgr, session_name, timeout=30)
+        session = mgr.sessions[session_name]
+
+        assert session.is_complete
+        assert session.source == "otlp"
+        assert len(session.spans) > 0, "Expected spans from ADK agent"
+
+    def test_invocations_extracted(self, live_servers):
+        main_port, otlp_port, mgr = live_servers
+        session_name = "e2e-adk-inv"
+
+        result = _run_agent(
+            "examples/zero-code-examples/adk/run.py",
+            otlp_port,
+            session_name,
+        )
+        assert result.returncode == 0, f"Agent failed:\nstdout: {result.stdout}\nstderr: {result.stderr}"
+
+        wait_for_session_complete_sync(mgr, session_name, timeout=30)
+        session = mgr.sessions[session_name]
+
+        assert len(session.invocations) > 0, "Expected extracted invocations"
+
+    def test_session_visible_via_api(self, live_servers):
+        main_port, otlp_port, mgr = live_servers
+        session_name = "e2e-adk-api"
+
+        result = _run_agent(
+            "examples/zero-code-examples/adk/run.py",
+            otlp_port,
+            session_name,
+        )
+        assert result.returncode == 0
+
+        wait_for_session_complete_sync(mgr, session_name, timeout=30)
+
+        resp = httpx.get(f"http://127.0.0.1:{main_port}/api/streaming/sessions")
+        assert resp.status_code == 200
+        session_ids = [s["sessionId"] for s in resp.json()["data"]]
+        assert session_name in session_ids
+
+
 @_skip_no_openai
 class TestAgentRerun:
     """Verify that re-running an agent with the same session_name creates