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The Custom Fields V2 API lets you define and manage custom field schemas attached to standard objects — such as companies — and custom objects within your HoopAI Platform sub-account. You can create fields of many data types (text, numeric, date, file upload, selection options, and more), organize them into folders, and retrieve or delete them programmatically.

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Base URL

https://services.leadconnectorhq.com

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Authentication

Every request must include a bearer token in the Authorization header and the API version in the Version header. 
Authorization: Bearer <access_token>
Version: 2021-07-28
Use an access token generated for a Sub-Account user type, or a Private Integration Token scoped to the sub-account.

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OAuth scopes

ScopeAccess
locations/customFields.readonlyRead custom fields and folders
locations/customFields.writeCreate, update, and delete custom fields and folders

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Quick start

Retrieve all custom fields for a custom object: 
curl -X GET "https://services.leadconnectorhq.com/custom-fields/object-key/custom_objects.pet?locationId=ve9EPM428h8vShlRW1KT" \
  -H "Authorization: Bearer <access_token>" \
  -H "Version: 2021-07-28"

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Endpoints

MethodPathDescription
POST/custom-fields/Create Custom Field
GET/custom-fields/{id}Get Custom Field / Folder By Id
PUT/custom-fields/{id}Update Custom Field By Id
DELETE/custom-fields/{id}Delete Custom Field By Id
GET/custom-fields/object-key/{objectKey}Get Custom Fields By Object Key
POST/custom-fields/folderCreate Custom Field Folder
PUT/custom-fields/folder/{id}Update Custom Field Folder Name
DELETE/custom-fields/folder/{id}Delete Custom Field Folder
Last modified on March 4, 2026