HubSpot Webhooks

When to Use This Skill

• Setting up HubSpot webhook handlers
• Verifying X-HubSpot-Signature-v3 headers
• Debugging signature verification failures
• Handling CRM events like contact creation, property changes, or deal events
• Migrating from HubSpot signature v1/v2 to v3

Essential Code (USE THIS)

HubSpot does not provide an SDK helper for webhook signature verification, so verification is implemented manually with HMAC-SHA256 and base64 across all frameworks.

HubSpot Signature Verification (JavaScript)

const crypto = require('crypto');