Outpost – OSS infra for outbound webhooks and event destinations
Hey HN, we're launching Outpost, an open-source, self-hostable component designed to handle outbound event delivery for SaaS/API platforms. If you're building a platform, you eventually need to send events to your users (think payment success, resource updates, workflow changes). Implementing this reliably—handling retries, monitoring, scaling, providing a decent dev experience for consumers, and managing tenants—becomes a significant, recurring engineering task that distracts from core product development. We built Outpost to offload that complexity. Outpost delivers events via…
In plain words
Outpost is an open-source, self-hostable infrastructure component for SaaS and API platforms to deliver outbound events to users. It handles webhooks and direct event destination delivery to message queues and buses, managing retries, monitoring, scaling, and multi-tenant operations. Designed for platform builders, Outpost reduces engineering overhead by centralizing event delivery reliability and developer experience, allowing teams to focus on core product features rather than building delivery infrastructure from scratch.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hey HN, we're launching Outpost, an open-source, self-hostable component designed to handle outbound event delivery for SaaS/API platforms. If you're building a platform, you eventually need to send events to your users (think payment success, resource updates, workflow changes). Implementing this reliably—handling retries, monitoring, scaling, providing a decent dev experience for consumers, and managing tenants—becomes a significant, recurring engineering task that distracts from core product development. We built Outpost to offload that complexity. Outpost delivers events via traditional webhooks and also directly to event destinations like message queues and buses. While webhooks are ubiquitous, they have limitations at scale regarding cost, reliability patterns, and security posture. We observed platforms like Stripe, Shopify, and Twilio offering direct bus/queue integrations for these reasons—it's often cheaper and more resilient. It offers a better DX for consumers who prefer programmatic consumption. Outpost provides this flexibility out of the box as a core feature. Key features: - Multiple Delivery Methods: Webhooks + native Event Destinations (SQS, Kinesis, GCP Pub/Sub, RabbitMQ, Hookdeck, etc.). - Guaranteed Delivery: At-least-once guarantee with configurable automatic retries. - Observability: Built-in event log & OpenTelemetry support. - Management: API for destination (endpoint) management; optional User Portal for end-user self-service (debugging, destination management). - Multi-tenancy, topics, webhook security best practices (signatures, timestamps), etc. Given you most likely already have a system in place, Outpost is backward compatible with your existing payload format, HTTP headers, and signatures. It's written in Go and licensed under Apache 2.0. It's still early days, and we'd love your feedback – especially on the architecture, desired event destinations, or any rough edges you find. GitHub: https://github.com/hookdeck/outpost Docs: https://outpost.hookdeck.com/docs Thanks for checking it out!
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