HubSpot form → Webhook → Clay enrichment → Slack notifications

HubSpot changed their developer platform on August 25, 2025, making webhook setup more complex. The new standard method requires CLI tools and directory configuration, while Legacy apps (no longer actively maintained) remain much simpler to use. HubSpot Automation workflows are the easiest option but require an $800 Professional Plan.

Instructions for all three methods are below.

1. Go to HubSpot Developer Dashboard
2. Legacy Apps → Create → Private → Fill out Basic info
3. Scopes → Add crm.objects.contacts.write
4. Webhooks → Set Target URL to your Val Town endpoint from ./webhook.ts
5. Create subscription:
   • Object: Contact
   • Event: Property changed → email
   • Subscribe

Read HubSpot docs →

1. Install CLI: npm install -g @hubspot/cli@latest
2. Run: hs account auth
3. Run: hs project create (choose App, Private, Static Auth, Webhooks)
4. Add src/app/webhooks/webhook-hsmeta.json:

{
  "uid": "webhooks",
  "type": "webhooks",
  "config": {
    "settings": {
      "targetUrl": "YOUR_VAL_TOWN_URL",
      "maxConcurrentRequests": 10
    },
    "subscriptions": {
      "crmObjects": [{
        "subscriptionType": "object.propertyChange",
        "objectType": "contact",
        "propertyName": "email",
        "active": true
      }]
    }
  }
}

5. Run: hs project upload to upload the HubSpot project
6. Your project and the associated webhook are now in HubSpot under Development > deployed build > webhooks

Read HubSpot docs →

Requires HubSpot Professional plan - $800/month

If you'd like, or even just for testing purposes, you can host HubSpot forms on Val Town - instructions // example URL

1. Submit HubSpot form
2. Webhook triggers → Clay enriches → Slack notifies