# List Custom Object Types

GET https://api.close.com/api/v1/custom_object_type/

The response will include all Custom Object Types, including Custom Field metadata for your organization.

Each Custom Object Type has two lists of Custom Fields. The `fields` property contains the list of fields that belong to the Custom Object Type. The `back_reference_fields` property contains the list of any objects (Leads, Contacts, Opportunities, Custom Activities, Custom Objects) that reference the Custom Object Type.

Reference: https://developer.close.com/api/resources/custom-object-types/list

## OpenAPI Specification

```yaml
openapi: 3.1.0
info:
  title: Close API
  version: 1.0.0
paths:
  /custom_object_type/:
    get:
      operationId: list
      summary: List Custom Object Types
      description: >-
        The response will include all Custom Object Types, including Custom
        Field metadata for your organization.


        Each Custom Object Type has two lists of Custom Fields. The `fields`
        property contains the list of fields that belong to the Custom Object
        Type. The `back_reference_fields` property contains the list of any
        objects (Leads, Contacts, Opportunities, Custom Activities, Custom
        Objects) that reference the Custom Object Type.
      tags:
        - subpackage_customObjectTypes
      parameters:
        - name: Authorization
          in: header
          description: Basic authentication
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/custom_object_types_list_Response_200'
        '400':
          description: Bad request
          content:
            application/json:
              schema:
                description: Any type
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                description: Any type
        '404':
          description: Not found
          content:
            application/json:
              schema:
                description: Any type
servers:
  - url: https://api.close.com/api/v1
components:
  schemas:
    custom_object_types_list_Response_200:
      type: object
      properties: {}
      description: Empty response body
      title: custom_object_types_list_Response_200
  securitySchemes:
    ApiKeyAuth:
      type: http
      scheme: basic
    OAuth2:
      type: http
      scheme: bearer

```