Create a custom property

Creates a new custom property for a work item type.

POST /api/v1/workspaces/{workspace_slug}/projects/{project_id}/work-item-types/{type_id}/work-item-properties

Create a custom property

cURL

curl --request POST \
  --url https://api.plane.so/api/v1/workspaces/{workspace_slug}/projects/{project_id}/work-item-types/{type_id}/work-item-properties/ \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "display_name": "<string>",
  "description": "<string>",
  "property_type": "<string>",
  "relation_type": "<string>",
  "default_value": [
    "<string>"
  ],
  "validation_rules": {},
  "is_required": true,
  "is_active": true,
  "is_multi": true,
  "options": [
    {}
  ]
}
'

Path parameters

workspace_slug · string · required

The workspace_slug represents the unique workspace identifier for a workspace in Plane. It can be found in the URL. For example, in the URL https://app.plane.so/my-team/projects/, the workspace slug is my-team.

project_id · string · required

The unique identifier of the project.

type_id · string · required

The unique identifier for the work item type.

Body parameters

display_name · string · required

Display name shown in the UI.

description · string

Description of the custom property.

property_type · string

Type of the property. Possible values: TEXT, DATETIME, DECIMAL, BOOLEAN, OPTION, RELATION.

relation_type · string

Relation type if the property links to other entities. Possible values: null, USER.

default_value · string[]

Default value(s) for the property.

validation_rules · object

Validation rules applied to property values.

is_required · boolean

Whether this property is required when creating work items.

is_active · boolean

Whether this property is currently active.

is_multi · boolean

Whether this property allows multiple values.

options · object[]

Array of option objects for OPTION type properties. This field can be used while creating a property with type OPTION to set options on the custom property during creation itself. Each option object can contain:

• name (string): Name of the option
• description (string): Description of the option
• is_active (boolean): Whether the option is active
• sort_order (number): Sort order for the option
• parent (string): Parent option ID for hierarchical options
• is_default (boolean): Whether this is the default option
• logo_props (object): Logo properties for the option

To add or update options on an OPTION property after creation, you can use the APIs from issue-types/options/add-dropdown-options.