Svix
Webhooks-as-a-service: send webhooks with retries, signing, and a customer portal.
About
Svix is a webhooks-as-a-service platform that lets developers add production-grade webhook delivery to their product in minutes instead of building the infrastructure themselves. It handles the unglamorous parts of webhooks: automatic retries with backoff, message signing and verification, per-endpoint filtering, and idempotency.
Founded in 2021 by Tom Hacohen and backed by Y Combinator (W21), Svix has raised about $11M from investors including Andreessen Horowitz, per company-reported figures. Customers get SDKs in Python, Go, Java, Kotlin, TypeScript, and JavaScript, plus a pre-built app portal so their own users can manage, debug, monitor, and test webhook endpoints from the browser. An open-source self-hostable server is available alongside the managed cloud.
What it can do
- Reliable webhook delivery with automatic retries and backoff
- Message signing and signature verification for security
- Customer-facing app portal for endpoint management and debugging
- SDKs in six languages plus an open-source self-hostable server
Setup
Sign up at svix.com for the managed cloud, or self-host the open-source server. Install an SDK and create a message type, then send events with a few API calls.
Prerequisites
An application that needs to notify external systems of events; API keys for the dashboard or server.
Use cases
Works with
Trust score — 8/10
Scored 8/10 (verified tier, metrics-v1). Evidence: Verified via vendor site/docs/GitHub and reputable coverage, wave 98; Trending score 82/100 from researcher assessment.
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.