Sonar
by Thiago Fernandes
Inspect and debug webhooks
Broad permissions
Verified creator
GPL-3.0-or-later
v2.5.0
Support the creators
Flatsonar is just the shop window. The people below made Sonar.
About
Sonar is a native tool for debugging webhooks. It captures incoming requests and lets you inspect headers, body content, and query parameters in real-time.
Core Features:
- Instant public URLs via ngrok integration for webhook testing
- Real-time capture of incoming webhook requests as they arrive
- Detailed inspection of headers, body content, query parameters, and metadata
- Quick copy functionality including JSON, cURL, and HTTP formats
- Clean Libadwaita interface that integrates perfectly with GNOME
- Fast and lightweight native application with minimal resource usage
Advanced Features:
- Request bookmarking and starring for quick access
- Request replay to resend webhooks to custom URLs
- Side-by-side request comparison to spot differences
- Request templates for saving and reusing webhook patterns
- Automatic webhook forwarding to multiple URLs
- Advanced filtering by method, content-type, time range, and search
- Persistent history with JSON storage
Permissions
2 permissions weaken the sandbox. Flatsonar asks before installing.
- X11 display: X11 lets apps read input and windows of other apps
--socket=x11 - your keyring / saved passwords
--talk-name=org.freedesktop.secrets - network
--share=network - inter-process communication (needed for X11)
--share=ipc - Wayland display
--socket=wayland - X11 display, only when Wayland is unavailable
--socket=fallback-x11 - GPU acceleration
--device=dri
Who publishes this
The creator demonstrably controls this app id: Flathub verification, the hosting account owns the namespace, or a well-known file on their domain.
- verified on Flathub: the developer proved they control this app id
publisher:flathub
Maintenance
Recent activity on the upstream repository, or built and reviewed by Flathub.
No staleness signals: recent activity, or built and reviewed by Flathub.