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Basic — Single Agent, One Model Call

The minimal Google ADK + Temporal sample: an ordinary ADK Agent whose model=TemporalModel("gemini-2.5-flash"), driven by an InMemoryRunner inside a workflow. No tools, no streaming — just one model turn.

It demonstrates that GoogleAdkPlugin's deterministic runtime and Pydantic payload converter let an unmodified ADK agent run durably in a workflow, with every LLM call surfaced as an invoke_model activity.

Before running, review the prerequisites in the suite README (Temporal dev server, uv sync --group google-adk, and export GOOGLE_API_KEY=...).

Running

Start the worker in one terminal:

uv run python -m google_adk_agents.basic.run_worker

Then start the workflow in another terminal:

uv run python -m google_adk_agents.basic.run_hello_world_workflow

What to expect

The starter prints the agent's response — a haiku about recursion. The agent is instructed to respond only in haikus.

In the Temporal UI

Open the workflow google-adk-agents-basic-workflow-id. In the history you will see one invoke_model activity for the single model turn. That activity is where the call to Gemini actually happens — the workflow itself stays deterministic and replay-safe.