Basic Telegram Agent

Minimal Telegram bot that responds to messages in private chats and when mentioned in groups.

Minimal Telegram bot that responds to messages in private chats and when mentioned in groups. Uses SQLite for session persistence so the agent remembers conversation history across restarts.

basic.py

"""
Basic Telegram Agent
====================

Minimal Telegram bot that responds to messages in private chats and
when mentioned in groups. Uses SQLite for session persistence so the
agent remembers conversation history across restarts.

Key concepts:
  - ``reply_to_mentions_only=True`` ignores regular group messages and
    only responds when the bot is mentioned with @.
  - ``add_history_to_context=True`` feeds the last N runs back into the prompt.

Setup: Set TELEGRAM_TOKEN env var from @BotFather.
"""

from agno.agent import Agent
from agno.db.sqlite import SqliteDb
from agno.models.google import Gemini
from agno.os.app import AgentOS
from agno.os.interfaces.telegram import Telegram

# ---------------------------------------------------------------------------
# Create Example
# ---------------------------------------------------------------------------

agent_db = SqliteDb(session_table="telegram_sessions", db_file="tmp/telegram_basic.db")

telegram_agent = Agent(
    name="Telegram Bot",
    model=Gemini(id="gemini-2.5-pro"),
    db=agent_db,
    instructions=[
        "You are a helpful assistant on Telegram.",
        "Keep responses concise and friendly.",
        "When in a group, you respond only when mentioned with @.",
    ],
    add_history_to_context=True,
    num_history_runs=3,
    add_datetime_to_context=True,
    markdown=True,
)

agent_os = AgentOS(
    agents=[telegram_agent],
    interfaces=[
        Telegram(
            agent=telegram_agent,
            reply_to_mentions_only=True,
        )
    ],
)
app = agent_os.get_app()

# ---------------------------------------------------------------------------
# Run Example
# ---------------------------------------------------------------------------

if __name__ == "__main__":
    """Run your AgentOS.

    You can see the configuration and available apps at:
    http://localhost:7777/config

    """
    agent_os.serve(app="basic:app", reload=True)

Run the Example

1. Set up your virtual environment

   Mac

   uv venv --python 3.12
   source .venv/bin/activate
   
2. Install dependencies

   uv pip install -U "agno[os,telegram]" google-genai
   
3. Export environment variables

   Mac/Linux

   export GOOGLE_API_KEY="your_google_api_key_here"
   export TELEGRAM_TOKEN="your_telegram_token_here"
   
4. Run the example

   Save the code above as basic.py, then run:

   python basic.py
   

Full source: cookbook/05_agent_os/18_telegram/basic.py