New ability to create mirror and connect board columns

🏷️ API version: 2025-10

Using the existing create_column mutation, you can now create connect board and mirror columns via the API. You can query the new get_column_type_schema object to retrieve the available properties for each column type.

mutation { create_column( board_id: 1234567890 title: "Related items (Board 9876543210)" column_type: board_relation defaults: { boardIds: [9876543210] allowMultipleItems: true allowCreateReflectionColumn: true } ) { id title type } }

mutation { create_column( board_id: 1234567890 title: "Test Column" column_type: mirror defaults: { relation_column: { board_relation: true } displayed_linked_columns: [ { board_id: "9876543210" column_ids: ["status"] } ] } ) { id title type } }