Trajectory Saving Callback

The TrajectorySaverCallback records complete agent conversations including messages, actions, and screenshots for debugging and analysis.

Callbacks Example

from agent.callbacks import TrajectorySaverCallback

agent = ComputerAgent(
    model="anthropic/claude-3-5-sonnet-20241022",
    tools=[computer],
    callbacks=[
        TrajectorySaverCallback(
            trajectory_dir="my_trajectories",
            save_screenshots=True
        )
    ]
)

Shorthand

agent = ComputerAgent(
    model="anthropic/claude-3-5-sonnet-20241022",
    tools=[computer],
    trajectory_dir="trajectories"  # Auto-adds TrajectorySaverCallback
)

View Trajectories Online

View trajectories in the browser at: trycua.com/trajectory-viewer

The viewer provides:

• Interactive conversation replay
• Screenshot galleries
• No data collection

Trajectory Structure

Each trajectory contains:

• metadata.json: Run info, timestamps, usage stats (total_tokens, response_cost)
• turn_000/: Turn-by-turn conversation history (api calls, responses, computer calls, screenshots)