---
title: Telemetry
description: How telemetry works in Cua and how to control it
---

# Telemetry

Cua collects anonymized usage and error statistics. We follow [Posthog's ethical telemetry approach](https://posthog.com/blog/open-source-telemetry-ethical). To opt out, set `telemetry_enabled` to false.

## What we collect

### Enabled by default (opt-out)

- System info: OS, OS version, Python version
- Module initialization: When modules are imported and their versions
- Performance: Agent run durations, step counts, token usage, API costs
- Session tracking: Anonymous session IDs and run IDs

### Disabled by default (opt-in)

**Trajectory logging** captures full conversation history:
- User messages and agent responses
- Computer actions and outputs
- Agent reasoning traces

Must be explicitly enabled.

### We don't collect

- Personal information or user identifiers
- API keys or credentials
- File contents or application data
- Files being accessed
- Screenshots or screen contents (unless trajectory logging is enabled)
- Text being typed, user inputs, model outputs, computer outputs, or tool call outputs (unless trajectory logging is enabled)

## How to disable

### Environment variable (global)

Set `CUA_TELEMETRY_ENABLED` to a falsy value (`0`, `false`, `no`, or `off`):

```bash
export CUA_TELEMETRY_ENABLED=false
```

Or in Python:

```python
import os
os.environ["CUA_TELEMETRY_ENABLED"] = "false"
```

### Per instance

**Computer SDK:**

```python
from computer import Computer

computer = Computer(telemetry_enabled=False)
```

**Agent SDK:**

```python
from agent import ComputerAgent
import os

# Basic telemetry - performance metrics only (opt-out, enabled by default)
agent = ComputerAgent(
    model="claude-sonnet-4-5-20250929",
    telemetry_enabled=True  # Default is True
)

# Enable telemetry with full conversation trajectory logging (opt-in)
agent = ComputerAgent(
    model="claude-sonnet-4-5-20250929",
    telemetry_enabled={
        "log_trajectory": True  # Logs full conversation items
    }
)

# Disable completely
agent = ComputerAgent(
    model="claude-sonnet-4-5-20250929",
    telemetry_enabled=False
)

# Enable trajectory logging (opt-in)
agent = ComputerAgent(
    model="claude-sonnet-4-5-20250929",
    telemetry_enabled={"log_trajectory": True}
)
```

Check status:

```python
print(computer.telemetry_enabled)  # True or False
print(agent.telemetry_enabled)     # True, False, or dict
```

Telemetry settings are configured at initialization and can't be changed afterward.

## Events collected

### Computer SDK

| Event Name               | Data Collected                                                                                                                        | Trigger Notes                                                           |
| ------------------------ | ------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------- |
| **computer_initialized** | • `os`: Operating system (e.g., 'windows', 'darwin', 'linux')<br />• `os_version`: OS version<br />• `python_version`: Python version | Triggered when a Computer instance is created                           |
| **module_init**          | • `module`: "computer"<br />• `version`: Package version<br />• `python_version`: Full Python version string                          | Triggered once when the computer package is imported for the first time |

### Agent SDK

| Event Name              | Data Collected                                                                                                                                                                                                                                                                                                        | Trigger Notes                                                         |
| ----------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------- |
| **module_init**         | • `module`: "agent"<br />• `version`: Package version<br />• `python_version`: Full Python version string                                                                                                                                                                                                             | Triggered once when the agent package is imported for the first time  |
| **agent_session_start** | • `session_id`: Unique UUID for this agent instance<br />• `agent_type`: Class name (e.g., "ComputerAgent")<br />• `model`: Model name (e.g., "claude-3-5-sonnet")<br />• `os`: Operating system<br />• `os_version`: OS version<br />• `python_version`: Python version                                              | Triggered when TelemetryCallback is initialized (agent instantiation) |
| **agent_run_start**     | • `session_id`: Agent session UUID<br />• `run_id`: Unique UUID for this run<br />• `start_time`: Unix timestamp<br />• `input_context_size`: Character count of input messages<br />• `num_existing_messages`: Count of existing messages<br />• `uploaded_trajectory`: Full conversation items (opt-in)             | Triggered at the start of each agent.run() call                       |
| **agent_run_end**       | • `session_id`: Agent session UUID<br />• `run_id`: Run UUID<br />• `end_time`: Unix timestamp<br />• `duration_seconds`: Total run duration<br />• `num_steps`: Total steps taken in this run<br />• `total_usage`: Accumulated token usage and costs<br />• `uploaded_trajectory`: Full conversation items (opt-in) | Triggered at the end of each agent.run() call                         |
| **agent_step**          | • `session_id`: Agent session UUID<br />• `run_id`: Run UUID<br />• `step`: Step number (incremental)<br />• `timestamp`: Unix timestamp<br />• `duration_seconds`: Duration of previous step                                                                                                                         | Triggered on each agent response/step during a run                    |
| **agent_usage**         | • `session_id`: Agent session UUID<br />• `run_id`: Run UUID<br />• `step`: Current step number<br />• `prompt_tokens`: Tokens in prompt<br />• `completion_tokens`: Tokens in response<br />• `total_tokens`: Total tokens used<br />• `response_cost`: Cost of this API call                                        | Triggered whenever usage information is received from LLM API         |

## Questions

Questions about telemetry? Open an issue on our [GitHub repository](https://github.com/trycua/cua).
