A web app that gives SaaS teams a drop-in outgoing webhook delivery engine with retries, signing, and a customer-facing endpoint portal

Small SaaS teams spend weeks building outgoing webhook infrastructure from scratch: reliable delivery, exponential backoff retries, HMAC signing, delivery logs, and per-customer endpoint management. Svix solves this but is a fully managed third-party service that adds vendor dependency and per-event pricing that compounds at scale. This is a self-hosted, embeddable webhook engine teams drop into their existing stack in under a day, giving their customers a first-class webhook experience without writing the undifferentiated plumbing themselves.

Demand Breakdown

384

Social Proof 2 sources

Show HN: Svix Open-Source Webhooks Service Written in Rust

@Svix · 2022-02-15

204 HN

Launch HN: Svix (YC W21) Webhooks as a Service

@Svix · 2021-06-16

180

Gap Assessment

CompetitiveMultiple tools exist but differentiation opportunities remain

3 tools exist (Svix, Hookdeck, Hook0) but gaps remain: Vendor lock-in on event volume pricing; requires routing all webhook traffic through Svix infrastructure; not embeddable in air-gapped or compliance-constrained environments; pricing escalates with event volume.; Inbound-focused, not a solution for sending outgoing webhooks to your own customers' endpoints. Different problem surface entirely..

Features8 agent-ready prompts

Drop-in SDK with a single-function send API

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Per-endpoint HMAC signing and secret rotation

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Customer-facing endpoint self-management portal

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Delivery logs and retry management API

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Event catalog and type filtering

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Self-hosted deployment with a single Docker Compose file

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Rate limiting and backpressure per endpoint

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Usage metering and plan enforcement

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Competitive LandscapeFREE

Product	Does	Missing
Svix	Fully managed webhooks-as-a-service with retries, signing, delivery logs, and a customer portal. Open-source core exists but production use pushes teams to the hosted SaaS. YC W21.	Vendor lock-in on event volume pricing; requires routing all webhook traffic through Svix infrastructure; not embeddable in air-gapped or compliance-constrained environments; pricing escalates with event volume.
Hookdeck	Webhook gateway focused on inbound webhook receiving, buffering, routing, and retries. Strong for consuming third-party webhooks reliably.	Inbound-focused, not a solution for sending outgoing webhooks to your own customers' endpoints. Different problem surface entirely.
Hook0	Open-source outbound webhook server for self-hosting. Handles sending, retries, and basic management.	Very early-stage; sparse documentation; no embeddable SDK path; no built-in customer-facing portal; minimal adoption and community support.