shared_state.py
"""
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
1
Set up your virtual environment
uv venv --python 3.12
source .venv/bin/activate
uv venv --python 3.12
.venv\Scripts\activate
2
Install dependencies
uv pip install -U "agno[agui,os]" openai
3
Export your OpenAI API key
export OPENAI_API_KEY="your_openai_api_key_here"
$Env:OPENAI_API_KEY="your_openai_api_key_here"
4
Run the example
Save the code above as
shared_state.py, then run:python shared_state.py