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This example demonstrates how to inject session_state variables directly into the agent’s instructions using add_state_in_messages.

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Code

cookbook/agent_concepts/state/state_in_prompt.py
from agno.agent import Agent
from agno.models.openai import OpenAIChat

agent = Agent(
    model=OpenAIChat(id="gpt-4o-mini"),
    # Initialize the session state with a variable
    session_state={"user_name": "John"},
    # You can use variables from the session state in the instructions
    instructions="Users name is {user_name}",
    show_tool_calls=True,
    add_state_in_messages=True,
    markdown=True,
)

agent.print_response("What is my name?", stream=True)

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Usage

1

Create a virtual environment

Open the Terminal and create a python virtual environment.
python3 -m venv .venv
source .venv/bin/activate
2

Set your API key

export OPENAI_API_KEY=xxx
3

Install libraries

pip install -U openai agno
4

Run Example

python cookbook/agent_concepts/state/state_in_prompt.py