Demo

Vantmetry includes a fully self-contained demo that runs everything in a single Docker container. All data stays on your machine. No external services or accounts needed.

What is Demo?

Demo packages the tracker, ingestor, dashboard, and a test error-generation page into one image. It's designed for trying out Vantmetry without any setup:

docker run --rm -p 48043:8080 vantmetry/demo

Then visit http://localhost:48043/demo to trigger test errors, and http://localhost:48043/app to view them in the dashboard.

Generating Test Errors

The demo site includes an error generator page to simulate real errors:

• Fire single error: Click "Fire" to throw a typical JavaScript error (TypeError, ReferenceError, etc.)
• PII masking demo: Click "Mask Test" to see how the tracker automatically redacts sensitive data like emails, credit card numbers, and JWTs
• Error burst: Click "Stress Test" to simulate an error spike and trigger the spike detection feature

Errors appear in the dashboard and are grouped on the overview page when viewing a single error.

Limitations

Demo trades features for simplicity. Some parts of the UI are disabled:

Feature	Status	Reason
Email signup/login	Disabled	Dashboard is pre-authenticated, no authentication needed
Magic link email	Disabled	No email sending in demo
Password settings	Disabled	No user account management
Account settings	Disabled	Single hardcoded account only
API key management	Disabled	Only the demo public key works
Project management	Disabled	Single hardcoded project only
Multi-user access	Disabled	All users see the same demo account
Persistent storage	Limited	Data persists across restarts but is lost if the volume is deleted

When to Use Demo

Demo is perfect for:

• Learning: No account signup, see Vantmetry working immediately
• Testing: Generate sample errors, explore the dashboard, test spike detection

Demo is not suitable for:

• Production use (no data persistence)
• Sharing across a team (no multi-user, no accounts)
• Storing real error data (reset on restart)

Data Persistence

Error logs are stored in DuckDB and persist across container restarts. Dashboard settings like API keys and project configuration reset on each restart.