DevPulse is a self-hosted error tracking and performance monitoring plugin for WordPress, similar to Sentry but free and running on your own server.

Features:

Captures PHP errors, warnings, notices, and fatal errors
Captures unhandled exceptions automatically
Frontend Core Web Vitals (LCP, INP, CLS, TTFB, page load) — real-user Lighthouse metrics
Lightweight — the backend handler has zero JS footprint; the vitals bundle is ~4 KB deferred
Configurable via the WordPress admin or wp-config.php constants
Works with any self-hosted DevPulse server

Privacy: All error data is sent to your own server. Nothing leaves your infrastructure.

Configuration

You can configure the plugin via Settings DevPulse in the WordPress admin, or by defining constants in wp-config.php:

define( 'DEVPULSE_DSN',     'http://your-server:8000/api/ingest/YOUR_API_KEY' );
define( 'DEVPULSE_ENV',     'production' );
define( 'DEVPULSE_ENABLED', true );

Constants take precedence over admin settings.

Running the DevPulse server:

docker compose up -d

See the DevPulse GitHub repository for full server setup instructions.