# Webhook trigger

**URL:** <https://community.hubspot.com/t/webhook-trigger/71789>\
**Category:** APIs & Integrations\
**Created:** [December 23, 2022, 6:01pm UTC](https://community.hubspot.com/t/webhook-trigger/71789 "2022-12-23T18:01:07Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sync2sys](https://avatars.discourse-cdn.com/v4/letter/s/ba8739/32.png) [@sync2sys](https://community.hubspot.com/u/sync2sys)\
**Post date:** [December 23, 2022, 6:01pm UTC](https://community.hubspot.com/t/webhook-trigger/71789/1 "2022-12-23T18:01:07Z")

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Hi,

Is there a way to add a new custom property as trigger for webhooks?

I noticed there are only a handfull of them listed in the Create Subscription(property change).

Thank you!

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<div class="post-metadata">

**Author:** ![caio-pizzol](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/caio-pizzol/32/33348_2.png) [@caio-pizzol](https://community.hubspot.com/u/caio-pizzol)\
**Post date:** [December 24, 2022, 12:23pm UTC](https://community.hubspot.com/t/webhook-trigger/71789/2 "2022-12-24T12:23:47Z")

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Hey @sync2sys!

This is a great question.

To solve this, I’ve created a service that checks for new properties every day and add the Webhooks subscriptions that are missing.

**1) List all properties for a specific object**

curl --request GET \

--url ‘[https://api.hubapi.com/crm/v3/properties/{OBJECT\_TYPE}?archived=false](https://api.hubapi.com/crm/v3/properties/%7BOBJECT_TYPE%7D?archived=false)’ \

--header ‘authorization: Bearer YOUR\_ACCESS\_TOKEN’

(at this point you will need a Developer API Key to fetch information from your OAuth app)

**2) Get all active Webhook subscriptions**

**curl --request GET \  
--url ’**

[https://api.hubapi.com/webhooks/v3/{HUBSPOT\_DEVELOPER\_APP\_ID}/subscriptions](https://api.hubapi.com/webhooks/v3/%7BHUBSPOT%5C_DEVELOPER%5C_APP%5C_ID%7D/subscriptions)?

hapikey={HUBSPOT\_DEVELOPER\_API\_KEY} **’**

**3) Diff existing properties from already active Webhook subscriptions**

**4) Create new subscriptions for missing properties**

**curl --request POST \  
--url ‘[https://api.hubapi.com/webhooks/v3/{HUBSPOT\_DEVELOPER\_APP\_ID}/subscriptions?hapikey={HUBSPOT\_DEVELOPER\_API\_KEY}](https://api.hubapi.com/webhooks/v3/%7BHUBSPOT%5C_DEVELOPER%5C_APP%5C_ID%7D/subscriptions?hapikey=%7BHUBSPOT%5C_DEVELOPER%5C_API%5C_KEY%7D)’ \**

**--data '{** “active”: true, “eventType”: “{OBJECT\_TYPE}.propertyChange”, “propertyName”: “{PROPERTY\_NAME}” }’