List Kaiten tasks (cards), optionally filtered by board, column, space, or text search.

Args: board_id: Only return cards on this board. column_id: Only return cards in this column. space_id: Only return cards in this space. query: Free-text search over card titles/descriptions. archived: If set, filter to archived (True) or active (False) cards. limit: Max cards to return (capped at 100).

List Kaiten boards, optionally scoped to a single space.

Args: space_id: If given, only return boards in this space; otherwise return boards across all spaces you have access to.

List the columns on a given Kaiten board.

Args: board_id: Board to list columns for.

Create a new Kaiten task (card) on a given board.

Args: title: Card title. board_id: Board to create the card on. column_id: Column to create it in (optional; defaults to the board's first column). lane_id: Lane to create it in (optional). description: Card description (optional). owner_id: User ID to set as responsible person (optional).

Move a Kaiten task (card) to a given board (and optionally a specific column/lane).

Args: card_id: ID of the card to move. board_id: Destination board ID. column_id: Destination column ID on that board (optional). lane_id: Destination lane ID on that board (optional).

Set the responsible person (owner) for a Kaiten task.

Args: card_id: ID of the card to update. user_id: Kaiten user ID to set as the card's responsible person.

Add a comment to a Kaiten task.

Args: card_id: ID of the card to comment on. text: Comment text (max 4096 characters).