> ## Documentation Index
> Fetch the complete documentation index at: https://docs.agno.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Synchronize Shared State over AG-UI

> Give an AG-UI agent a recipe-shaped session state and let its update_session_state tool emit state snapshots and JSON Patch deltas.

```python shared_state.py theme={null}
"""
Synchronize Shared State over AG-UI
===================================

Give an AG-UI agent a recipe-shaped session state and let its
update_session_state tool emit state snapshots and JSON Patch deltas.

Prerequisites: OPENAI_API_KEY
Run: .venvs/demo/bin/python cookbook/05_agent_os/16_agui/shared_state.py
Try: POST state and ask for a tomato soup at http://localhost:7777/shared-state/agui
"""

from agno.agent import Agent
from agno.db.sqlite import SqliteDb
from agno.models.openai import OpenAIResponses
from agno.os import AgentOS
from agno.os.interfaces.agui import AGUI

# ---------------------------------------------------------------------------
# Create Stateful Agent
# ---------------------------------------------------------------------------

db = SqliteDb(
    id="agui-shared-state-db",
    db_file="tmp/agui_shared_state.db",
)

INITIAL_RECIPE = {
    "recipe": {
        "title": "Untitled recipe",
        "skill_level": "Beginner",
        "cooking_time": "30 min",
        "special_preferences": [],
        "ingredients": [],
        "instructions": [],
    }
}

recipe_agent = Agent(
    id="agui-recipe-agent",
    name="AG-UI Recipe Agent",
    model=OpenAIResponses(id="gpt-5.5"),
    db=db,
    session_state=INITIAL_RECIPE,
    add_session_state_to_context=True,
    enable_agentic_state=True,
    instructions=[
        "Help the user build one recipe in the shared session state.",
        (
            "When the user requests a recipe change, call update_session_state "
            "with the complete updated recipe object under the recipe key."
        ),
        "Use plain ingredient names; do not use icons or emoji.",
        "After updating state, summarize the change in one sentence.",
    ],
)

agent_os = AgentOS(
    id="agui-shared-state-os",
    description="AgentOS emitting AG-UI state snapshots and deltas.",
    agents=[recipe_agent],
    interfaces=[AGUI(agent=recipe_agent, prefix="/shared-state")],
)
app = agent_os.get_app()

# ---------------------------------------------------------------------------
# Run Shared-State Server
# ---------------------------------------------------------------------------

if __name__ == "__main__":
    agent_os.serve(app=app)
```

## Run the Example

<Steps>
  <Snippet file="create-venv-step.mdx" />

  <Step title="Install dependencies">
    ```bash theme={null}
    uv pip install -U "agno[agui,os]" openai
    ```
  </Step>

  <Step title="Export your OpenAI API key">
    <CodeGroup>
      ```bash Mac/Linux theme={null}
      export OPENAI_API_KEY="your_openai_api_key_here"
      ```

      ```bash Windows theme={null}
      $Env:OPENAI_API_KEY="your_openai_api_key_here"
      ```
    </CodeGroup>
  </Step>

  <Step title="Run the example">
    Save the code above as `shared_state.py`, then run:

    ```bash theme={null}
    python shared_state.py
    ```
  </Step>
</Steps>

Full source: [cookbook/05\_agent\_os/16\_agui/shared\_state.py](https://github.com/agno-agi/agno/blob/v3.0.4/cookbook/05_agent_os/16_agui/shared_state.py)