Webhook Tester

Webhook Tester is a self-hosted application for receiving, inspecting and debugging HTTP requests and webhooks. It generates unique session URLs, records incoming requests, and provides a lightweight web UI with real-time notifications.

Key Features

• Generate unique, randomly created session URLs to capture HTTP requests
• Customize response code, headers, body and response delay for testing integrations
• Built-in React-based UI compiled into the binary with WebSocket-driven real-time updates
• Multiple storage drivers: memory (ephemeral), Redis (persistent / multi-instance), and filesystem (fs)
• Pub/Sub drivers: memory and Redis to support real-time notifications across instances
• Optional tunneling driver to expose local instances to the public internet (requires external tunnel auth)
• Distributed-friendly: multi-architecture Docker images and single-binary releases; includes CLI and health endpoints
• Binary view of recorded requests and configurable logging formats

Use Cases

• Debug incoming webhook payloads from external services and inspect headers, bodies and timing
• Test API integrations by simulating different response codes, headers and delays
• Capture requests from CI, local development or remote services using a tunnel to a local instance

Limitations and Considerations

• Default memory storage is ephemeral; use Redis or filesystem storage for persistence or multi-instance deployments
• The tunneling feature relies on a third-party tunnel provider and requires an authentication token
• README does not describe built-in access control or authentication; consider fronting with an auth/reverse proxy for public deployments

Webhook Tester is focused on low-oversight, high-performance request capture and inspection. It is suitable for development and staging environments and can be extended for more durable production use by enabling Redis or filesystem storage and adding external access controls.