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Clear History

Remove all messages while preserving session: 
import asyncio
from upsonic import Agent, Chat


async def main():
    agent = Agent("openai/gpt-4o")
    chat = Chat(session_id="session1", user_id="user1", agent=agent)

    await chat.invoke("Hello")
    await chat.invoke("How are you?")
    print(f"Messages before: {len(chat.all_messages)}")

    chat.clear_history()
    print(f"Messages after: {len(chat.all_messages)}")


if __name__ == "__main__":
    asyncio.run(main())

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Reset Session

Delete the entire session and start fresh: 
import asyncio
from upsonic import Agent, Chat


async def main():
    agent = Agent("openai/gpt-4o")
    chat = Chat(session_id="session1", user_id="user1", agent=agent)

    await chat.invoke("Hello")

    chat.reset_session()
    print("Session reset complete")


if __name__ == "__main__":
    asyncio.run(main())

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Delete a Message

Remove a specific message by index: 
import asyncio
from upsonic import Agent, Chat


async def main():
    agent = Agent("openai/gpt-4o")
    chat = Chat(session_id="session1", user_id="user1", agent=agent)

    await chat.invoke("Message one")
    await chat.invoke("Message two")

    print(f"Before: {len(chat.all_messages)} messages")

    chat.delete_message(0)

    print(f"After: {len(chat.all_messages)} messages")


if __name__ == "__main__":
    asyncio.run(main())

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Remove Attachment by Path

Remove attachments matching a path from all messages: 
import asyncio
from upsonic import Agent, Chat


async def main():
    agent = Agent("openai/gpt-4o")
    chat = Chat(session_id="session1", user_id="user1", agent=agent)

    await chat.invoke("Analyze", context=["doc.pdf", "image.png"])

    removed = chat.remove_attachment_by_path("doc.pdf")
    print(f"Removed {removed} attachments")


if __name__ == "__main__":
    asyncio.run(main())