Hook0

Hook0 is an open-source Webhooks-as-a-Service (WaaS) platform that lets your application deliver webhook events to your users through a single API call. It provides a backend service plus a web dashboard to manage subscriptions, delivery, and debugging.

Key Features

• JSON REST API to publish events and manage webhook resources
• Fine-grained webhook subscriptions so users can choose which event types to receive
• Automatic request retries when endpoints are unreachable
• Event scoping to control which events are delivered to which subscribers
• Persistence of events and webhook delivery responses for auditing and debugging
• Modern web dashboard designed for self-serve, non-technical users

Use Cases

• Add webhook capabilities to a SaaS product without building a full delivery system
• Replace polling with real-time push updates to external customers or internal services
• Asynchronous notifications for long-running jobs (e.g., processing pipelines)

Limitations and Considerations

• Licensed under SSPLv1, which restricts offering Hook0 as a managed service to others

Hook0 is a practical choice for teams that want robust webhook delivery, retries, and observability packaged into a single platform. It helps standardize webhook management while keeping event delivery reliable and debuggable as your product scales.