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

# Multi-Platform Agent

> Serve one agent across Telegram, Discord, and Slack simultaneously.

Deploy a single agent to multiple messaging platforms with shared memory and identity resolution.

<Steps>
  <Step title="Create the agent">
    ```python multi_platform.py theme={null}
    import asyncio
    import os
    from definable.agent import Agent
    from definable.agent.interface import TelegramInterface, DiscordInterface, SlackInterface
    from definable.memory import Memory, SQLiteStore
    from definable.tool.decorator import tool

    @tool
    def get_weather(city: str) -> str:
        """Get the current weather for a city."""
        return f"Sunny, 24C in {city}"

    agent = Agent(
        model="gpt-4o",
        instructions="You are a helpful assistant available on multiple platforms.",
        tools=[get_weather],
        memory=Memory(store=SQLiteStore("./shared_memory.db")),
    )

    telegram = TelegramInterface(
        agent=agent,
        bot_token=os.environ["TELEGRAM_BOT_TOKEN"],
    )

    discord = DiscordInterface(
        agent=agent,
        bot_token=os.environ["DISCORD_BOT_TOKEN"],
    )

    slack = SlackInterface(
        agent=agent,
        bot_token=os.environ["SLACK_BOT_TOKEN"],
        app_token=os.environ["SLACK_APP_TOKEN"],
    )

    # Serve all interfaces with agent.serve()
    agent.serve(telegram, discord, slack, port=8000)
    ```
  </Step>

  <Step title="Install dependencies">
    ```bash theme={null}
    pip install 'definable[interfaces]'
    ```
  </Step>

  <Step title="Set environment variables">
    ```bash theme={null}
    export TELEGRAM_BOT_TOKEN="..."
    export DISCORD_BOT_TOKEN="..."
    export SLACK_BOT_TOKEN="xoxb-..."
    export SLACK_APP_TOKEN="xapp-..."
    export OPENAI_API_KEY="sk-..."
    ```
  </Step>

  <Step title="Run">
    ```bash theme={null}
    python multi_platform.py
    ```

    The agent is now live on all three platforms simultaneously with shared memory.
  </Step>
</Steps>

See [Multi-Interface](/interfaces/multi-interface) for identity resolution and shared session management.