Last N Session Messages

This example demonstrates how to configure agents to search through previous sessions and limit the number of historical sessions included in context. This helps manage context length while maintaining relevant conversation history.

Code

last_n_session_messages.py

import os

from agno.agent import Agent
from agno.db.sqlite import SqliteDb
from agno.models.openai import OpenAIChat

# Remove the tmp db file before running the script
os.remove("tmp/data.db")

agent = Agent(
    model=OpenAIChat(id="gpt-5-mini"),
    user_id="user_1",
    db=SqliteDb(db_file="tmp/data.db"),
    add_history_to_context=True,
    num_history_runs=3,
    search_session_history=True,  # allow searching previous sessions
    num_history_sessions=2,  # only include the last 2 sessions in the search to avoid context length issues
)

session_1_id = "session_1_id"
session_2_id = "session_2_id"
session_3_id = "session_3_id"
session_4_id = "session_4_id"
session_5_id = "session_5_id"

agent.print_response("What is the capital of South Africa?", session_id=session_1_id)
agent.print_response("What is the capital of China?", session_id=session_2_id)
agent.print_response("What is the capital of France?", session_id=session_3_id)
agent.print_response("What is the capital of Japan?", session_id=session_4_id)
agent.print_response(
    "What did I discuss in my previous conversations?", session_id=session_5_id
)  # It should only include the last 2 sessions

Usage

1. Create a virtual environment

   Open the Terminal and create a python virtual environment.

   Mac

   python3 -m venv .venv
   source .venv/bin/activate
   
2. Install libraries

   pip install -U agno openai
   
3. Export your OpenAI API key

   Mac/Linux

     export OPENAI_API_KEY="your_openai_api_key_here"
   
4. Create a Python file

   Create a Python file and add the above code.

   touch last_n_session_messages.py
   
5. Run Agent

   Mac

   python last_n_session_messages.py
   
6. Find All Cookbooks

   Explore all the available cookbooks in the Agno repository. Click the link below to view the code on GitHub:

   Agno Cookbooks on GitHub