inbound webhook listener service

An inbound webhook listener service is a service that exposes an HTTP endpoint to receive webhook events from external systems (like GitHub, Stripe, Twilio, Slack, etc.), then validates, processes, and routes those events to the rest of your application.

Typical responsibilities

• Receive HTTP POST requests from third parties
• Verify authenticity
  • signature validation
  • secret/token checks
  • IP allowlists if needed
• Parse and normalize payloads
• Deduplicate retries / duplicate deliveries
• Queue or forward events for async processing
• Log and monitor deliveries, failures, and latency
• Return fast responses to avoid sender retries/timeouts

Common architecture

1. External provider sends webhook to /webhooks/...
2. Listener authenticates and validates request
3. Listener stores raw event and/or enqueues job
4. Worker processes event business logic
5. Service returns 200 OK quickly once accepted

Good practices

• Make handlers idempotent
• Keep request handling fast
• Use retries and a dead-letter queue
• Store raw payloads for debugging/auditing
• Separate ingress from business logic
• Protect endpoints with TLS, signatures, and rate limiting

Example use cases

• Payment events: payment_succeeded, invoice_failed
• Git events: push, pull_request
• Messaging events: delivery, read, incoming_message
• IoT/device callbacks

If you want, I can also help with any of these:

1. designing an inbound webhook listener service,
2. building one in a specific stack (Node.js, Python, Go, Java, etc.),
3. or writing an API spec / architecture diagram for it.