Is it possible to grab the values from custom fields using the API?

[ricky23]

We have created some custom fields under Deals. Is it possible to grab the values from these fields using the API?

[IsaacTakushi]

Hi @a_hubspot_api_user,

Yes, you would use this Contacts API endpoint (or the email version) and include &property=your_custom_property's_internal_name as a query parameter.

[a_hubspot_api_u]

Hi @Derek_Gervais, is there a similiar way to get custom contact properties?

[Derek_Gervais · Accepted solution]

Hi @ricky23,

Yes:

• If you're looking to get the property definitions, you'll want the Deal Properties API:
  • https://developers.hubspot.com/docs/methods/deals/get_deal_properties
• If you're looking to get the value of these properties for particular deal records, you'll want the Deals API:
  • https://developers.hubspot.com/docs/methods/deals/get_deal

[colinlongworth]

Late to the party on this one, but is there a way to determine if the field was created by a user and is a custom field? We may not know in advance the name of the fields they created.

Is it safe to assume that if createdUserId is not null, then it's a custom, user created field?