SSE Client
Disconnected
Events: 0 Last Event: -
Event Filters
Events
Connect to an SSE endpoint to start receiving events
CORS Proxy Setup
To bypass CORS restrictions, run Holy CORS locally:
# macOS (Homebrew)
brew install bugdays-com/tap/holy-cors
holy-cors
# Docker
docker run -p 2345:2345 ghcr.io/bugdays-com/holy-cors
The proxy will be available at http://localhost:2345/
Free Online Server-Sent Events Tester
Test Server-Sent Events (SSE) streams in real-time. Connect to any SSE endpoint, filter events by type, and view incoming data with timestamps. Supports custom event types and automatic reconnection. Perfect for debugging real-time APIs and event-driven applications.