HubSpot Webhooks & Events

Overview

Set up HubSpot webhook subscriptions for CRM events (contact/company/deal creation, updates, deletions) with v3 signature verification and idempotent event handling.

Prerequisites

• HubSpot public app (webhooks require a public app, not a private app)
• Client secret from your app settings (for signature verification)
• HTTPS endpoint accessible from the internet
• Optional: Redis or database for idempotency

Instructions

Step 1: Understand HubSpot Webhook Events

HubSpot sends webhook events as batches of CRM change notifications: