Telemetry

Why is telemetry collected?

Telemetry helps us understand which features are used, identify performance issues, and prioritize development. Without this data, we would be building in the dark. We believe in transparency about what we collect and give you full control to opt out.

What is being collected?

Extension (via Azure Application Insights)

• Extension version number
• Commands invoked (e.g., open visualizer, create board)
• Feature usage events (e.g., switching views, expanding nodes)
• Performance metrics (e.g., sync duration, file count, symbol count)
• Workspace size category (small, medium, large, not actual file names)
• Session duration (how long the visualizer was open)
• Anonymized error reports (error type and context only)

CLI (via PostHog)

• CLI version and operating system
• Anonymous machine identifier (a cryptographic hash, not your actual machine name)
• Command events (e.g., login, init, sync completion status)
• Sync metrics (file count, symbol count, duration)
• Error events (error type only, no stack traces or file paths)

Here is an example of the data sent for a typical event:

{
  "eventName": "sync.completed",
  "properties": {
    "extensionVersion": "1.2.0"
  },
  "measurements": {
    "durationMs": 1523,
    "fileCount": 127,
    "symbolCount": 842
  }
}

Nogic follows VS Code's telemetry guidelines and uses the official extension telemetry API.

What about sensitive data?

We do not collect:

• Source code or file contents
• File names or file paths
• Usernames or any personally identifiable information
• Repository names or project names
• Any data that could identify you or your codebase

All file paths and usernames are stripped before any data leaves your machine. Only aggregate counts (e.g., “127 files”) are transmitted, never the actual names.

How do I opt out?

You can disable telemetry in two ways:

1. VS Code Settings

Nogic respects the global VS Code telemetry setting:

"telemetry.telemetryLevel": "off"

2. CLI

Disable CLI telemetry by running:

nogic telemetry disable

3. Extension Settings

Or disable telemetry specifically for Nogic:

"nogic.telemetry.enabled": false

Extension telemetry is stored in Azure Application Insights and retained for 90 days. CLI telemetry is stored in PostHog.