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# customObjectListFieldDefinitions

List field definitions for a custom object type.

Returns all field definitions configured for a specific custom object type. Use this to understand the schema of a custom object type — what fields it has,
their types, validation rules, and options. **Required:** `entity_id` must be provided to scope fields to a specific object type.

## Parameters

| Name        | Type    | Required | Description                                      |
| ----------- | ------- | -------- | ------------------------------------------------ |
| `entity_id` | integer | Yes      | The object type ID to get field definitions for. |