How Hookdeck Solves the Hardest Webhook Challenges

Webhooks look simple on the surface — an HTTP POST from one system to another. But in production, that simplicity breaks down fast. Payloads arrive out of order, endpoints go down, retries create duplicates, and debugging a failed delivery across two systems with no shared logging is a nightmare.

Most teams discover this the hard way. They build a basic webhook handler, ship it, and then spend weeks patching reliability gaps they didn't anticipate. And when the time comes to send webhooks to their own customers, they find the same set of problems waiting on the other side.

Hookdeck is webhook infrastructure with two core products:

  • Event Gateway — managed infrastructure for receiving, routing, and delivering inbound webhooks. It handles ingestion, retries, observability, and error recovery so you don't have to build it yourself.
  • Outpost — open-source infrastructure for sending outbound webhooks to your customers. Available self-hosted or as a managed service, with multi-tenant delivery, retries, and a customer-facing portal included.

Below are the most common webhook challenges, why they're harder than they seem, and how Hookdeck solves each one.

Receiving webhooks with Event Gateway

Reliability and retries

Webhooks fail. Destination servers go down, deploy windows cause brief outages, and network issues drop requests. Without automatic retries, those events are lost.

But retries introduce their own problems. Retry too aggressively and you overwhelm a server that's already struggling. Retry without backoff and you amplify the failure. Don't track what's been retried and you lose visibility into what actually succeeded.

Most teams start with a basic retry loop and then discover they need exponential backoff, failure tracking, dead letter handling, and manual replay — essentially building a delivery pipeline from scratch.

Learn more:

How Event Gateway solves this: Event Gateway automatically retries failed deliveries with configurable backoff strategies. When failures occur, it groups them into Issues — so you can see the root cause, review all affected events, and bulk retry them with one click once the problem is resolved. Rate limiting on destinations prevents retries from overwhelming your servers.

Observability and debugging

When a webhook fails, the first question is always: what happened? Was the payload malformed? Did the destination return an error? Was the request even sent?

Without dedicated tooling, answering these questions means correlating logs across the webhook provider, your infrastructure, and your application — systems that don't share request IDs, timestamps, or log formats. Most teams don't build webhook-specific observability because the upfront investment seems disproportionate to the problem. Then something breaks in production and they're debugging blind.

Learn more:

How Event Gateway solves this: Every webhook that flows through Event Gateway gets a complete trace — from the inbound request to the outbound event delivery, including headers, payloads, response codes, and timing. Metrics give you trend data across all your connections. When something goes wrong, you can search, filter, and inspect any delivery without touching a log aggregator.

Security and verification

Webhook endpoints are public URLs. Anyone who discovers the URL can send requests to it, which means every webhook endpoint is a potential attack vector for spoofed payloads.

The standard defence is HMAC signature verification — the provider signs the payload with a shared secret and you verify the signature on receipt. But each provider implements signing differently (different algorithms, different header names, different payload encoding), and getting verification wrong means either rejecting legitimate webhooks or accepting forged ones.

Learn more:

How Event Gateway solves this: Event Gateway handles signature verification for you, with pre-configured support for 120+ webhook providers. Each provider's signing method is already implemented — you select the provider, enter the signing secret, and Event Gateway verifies every inbound request before it reaches your server. Unverified requests are rejected automatically.

Ordering and idempotency

Webhooks are not guaranteed to arrive in order. A payment.completed event can arrive before the payment.created event that preceded it. Processing them in the wrong order can corrupt your application state.

Similarly, at-least-once delivery means you will receive duplicates. Without idempotent processing, a retried order.placed webhook could create two orders instead of one. Building ordering and deduplication logic is straightforward for a single webhook source — but it compounds in complexity as you add more providers, each with their own event ID formats and delivery guarantees.

Learn more:

How Event Gateway solves this: Event Gateway provides built-in deduplication that detects and suppresses duplicate deliveries before they reach your server. You can also use filters to route events based on payload content or headers, and transformations to normalise payloads from different providers into a consistent format your application expects.

Scaling under load

Webhook volume is unpredictable and outside your control. A flash sale on Shopify, a batch operation on Stripe, or a deployment triggering hundreds of GitHub webhooks can send a burst of traffic that overwhelms your server.

Without backpressure controls, your application either drops webhooks or degrades under load. Building a queueing layer to absorb spikes means introducing message brokers, worker processes, and all the operational overhead that comes with them.

Learn more:

How Event Gateway solves this: Event Gateway acts as a managed queue between your webhook providers and your application. Inbound webhooks are ingested immediately and delivered to your destinations at a rate you control. You set the maximum delivery rate per destination, and Event Gateway handles the buffering. Your servers never see more traffic than they can handle, and no webhooks are lost during spikes.

Testing and local development

Testing webhooks locally is painful. You need a tunnel tool to expose your local server, a new URL every session, and you have to trigger real events in the provider to generate test payloads. Replaying a specific edge case means reproducing the exact conditions that caused it — which may not be possible in a test environment.

This friction slows down development cycles and makes webhook integrations harder to iterate on than regular API integrations.

Learn more:

How Event Gateway solves this: The Hookdeck CLI gives you a permanent webhook URL that doesn't change between sessions and proxies events to your local server. Past events are preserved — you can replay any historical webhook with one click, without regenerating it in the provider. Bookmarks let you pin specific payloads for repeated testing.

Sending webhooks with Outpost

The challenges above apply when you're consuming webhooks from other services. But if you're building a platform that needs to send webhooks to your customers, you face an entirely different set of problems.

Learn more:

Delivery and retries

Your customers' endpoints will go down — deploys, misconfigurations, infrastructure issues. When that happens, you need to retry deliveries without losing events or overwhelming their servers. You also need to sign every payload so customers can verify it came from you, and you need to support different signing secrets per customer.

Building this yourself means implementing retry queues with backoff, HMAC signing, per-customer secret management, and delivery logging — a significant investment before you've sent a single webhook.

Learn more:

How Outpost solves this: Outpost provides at-least-once delivery with configurable retry strategies, HMAC signing with per-tenant secret rotation, and topic-based pub/sub routing. It supports delivery beyond HTTP — including Amazon SQS, Google Cloud Pub/Sub, and Amazon EventBridge — so your customers can receive events wherever they need them. Outpost is available self-hosted for full control, or as a managed service starting at $10 per million events.

Multi-tenancy

Every customer needs their own endpoints, their own signing secrets, and their own delivery state. One customer's failing endpoint can't create backpressure that delays deliveries to everyone else. As you scale from tens to thousands of tenants, the isolation and management overhead grows fast.

Most teams start by storing endpoints in a database column and looping through them to send events. That works at small scale, but falls apart when you need per-tenant retry state, isolated failure tracking, and the ability to onboard new customers without code changes.

Learn more:

How Outpost solves this: Multi-tenancy is a first-class concept in Outpost. Each tenant gets isolated delivery tracking and independent retry state, so one customer's failing endpoint never affects another. Tenants are created and managed programmatically via the API or SDKs, and each tenant's events are tracked independently with full delivery history.

Customer self-service

When a webhook delivery fails, your customers need to know about it — and they need to be able to fix it themselves. Without a self-service portal, every failed delivery becomes a support ticket. Your team ends up debugging your customer's endpoint configuration, replaying events manually, and answering questions about payloads you've already delivered.

Building a customer-facing webhook dashboard — with delivery logs, retry controls, and endpoint management — is a full product feature that diverts engineering time from your core product.

Learn more:

How Outpost solves this: Outpost includes a built-in tenant portal that your customers can use to manage their own destinations, view delivery history, and debug failed deliveries — without filing support tickets. The portal is themeable and can be embedded in your application via iframe or accessed as a standalone page. If you need more control, you can build your own UI using the same API the portal is built on.

Try Hookdeck for free

Whether you're receiving webhooks or sending them, Hookdeck has a free tier so you can evaluate with real traffic before committing — no credit card required.

Or if you want to see a webhook in action first, open the Hookdeck Console to inspect a real webhook payload in your browser (no account needed).

FAQs

What is Hookdeck?

Hookdeck is webhook infrastructure with two core products. Event Gateway is managed infrastructure for receiving, routing, and delivering inbound webhook events. Outpost is open-source infrastructure for sending outbound webhooks to your customers — available self-hosted or as a managed service.

How does Hookdeck handle webhook retries?

Hookdeck automatically retries failed webhooks with configurable retry strategies. It also tracks failures as Issues, groups related failures together, and lets you bulk retry all affected events once the underlying problem is fixed.

Can I use Hookdeck for local webhook development?

Yes. The Hookdeck CLI proxies webhook events to your local server with a permanent URL that doesn't change between sessions. It also preserves event history so you can replay past webhooks without regenerating them.

How much does Hookdeck cost?

Hookdeck offers a free tier with core features. Paid plans use usage-based pricing starting at $39/month, scaling with your event volume. All paid tiers include a 99.999% uptime SLA.

Fetch Before Process Pattern Cost of Multiple Providers