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POST
Create list
Requires the lists:write scope. Viewers cannot create lists.

Request body

string
required
Numeric ID of the workspace to create the list in.
string
Numeric ID of the folder this list belongs to. The folder must exist in the same workspace. Unlike the Arca app, this field is required when creating a list via the API.
string
required
List name.
string
Optional icon identifier slug (e.g., "folder-1", "chart", "code").
string
Optional color label. Defaults to "gray" if not provided.

Response

Returns the created list. The position is automatically assigned as one greater than the current maximum position in the workspace.
number
required
New list identifier.
number
required
Workspace this list belongs to.
number|null
required
Parent folder ID.
string
required
List name.
string | null
Icon. null if not provided.
string | null
Color. Defaults to "gray".
number
required
Auto-assigned sort position.
string
required
UTC ISO-8601 creation timestamp.