Svix

Svix provides a self‑hostable webhook service that abstracts delivery, retries, security and monitoring into a single API call. API providers can offload the complexities of event fan‑out, automatic retry logic and endpoint health tracking, while the open‑source implementation is released under the MIT license and includes a free tier without subscription requirements.

The platform offers official client libraries for Go, Python, TypeScript/JavaScript, Java, Kotlin and other languages, enabling developers to integrate webhook creation and management with minimal code. Features include built‑in verification to prevent replay and SSRF attacks, detailed logs and monitoring of delivery attempts, and an embeddable portal for users to add, remove and inspect their webhook endpoints.

Designed for enterprise use, Svix scales from low‑volume testing to billions of messages, supporting compliance‑focused security controls and a developer‑friendly experience that reduces operational overhead for both providers and consumers of webhooks.