List accessible Kaiten spaces. Use their IDs to discover boards.

Get a space and its available board references.

List boards in a space. Pagination is applied locally.

Get board details, columns, lanes and custom property configuration.

List columns on a board in Kaiten order. Pagination is applied locally.

List lanes on a board. Pagination is applied locally.

Identify the user associated with the configured Kaiten token.

Find company users by query to obtain user IDs for ownership and membership.

List existing card types.

Find tags by name, optionally within a space.

Search cards with filters. Returns summaries and a cursor; reuse the same filters with next_cursor. Fetch details with kaiten_get_card.

Get a card with its full description, members, tags, properties and checklist references. Read comments and checklist items with their dedicated tools.

Create a card on a board. Description uses Markdown. Optional properties use Kaiten id_ keys.

Update the supplied card fields. Omitted fields remain unchanged; null clears supported fields. Description uses Markdown.

Move a card to an explicit board, column and lane. Obtain valid target IDs using the navigation tools.

Archive a card. The card can be restored with kaiten_restore_card.

Restore an archived card to its live condition.

Delete a card using the Kaiten delete endpoint. This is a destructive operation; use archive_card for archiving.

Read card comments. Full comment text is preserved; pagination is applied locally.

Add a text comment to a card.

Replace the text of an existing comment.

Delete an existing card comment.

List card memberships. Use the returned id as member_id and user_id to identify the user.

Add an existing user to a card using user_id.

Make a card member responsible with type 2. Use the membership id returned by list_card_members. Returns card_id, user_id and type.

Remove a membership from a card using its member_id.

List tags attached to a card. Pagination is applied locally.

Attach a tag by name. Kaiten may create the tag if it does not exist.

Detach a tag from a card using tag_id.

List checklist references on a card. Fetch item details with kaiten_get_checklist.

Read a card checklist and all its items.

Create an empty named checklist on a card.

Change a checklist name or order.

Delete a checklist from a card.

Add a checklist item with optional completion, order, due date and responsible user.

Change checklist item fields. checked marks completion; null clears text, due_date or responsible_id.

Delete an item from a card checklist.

Find existing custom property definitions. Inspect type, multi_select and data before assigning values.

Read a custom property definition and type-specific settings.

Find existing select options. Card values use an array of numeric option IDs, including single-select properties.

Find existing catalog values. Assign a catalog value ID as a string in card properties.

Find existing custom directories with field definitions.

Find records in an existing custom directory. Assign record UUIDs as an array in card properties.

Set existing card properties using id_ keys. Omitted properties remain unchanged; null clears a value. Use native Kaiten formats: scalar text/number, select ID arrays, catalog string ID, directory UUID arrays, or a date object with date/time/tzOffset. Definitions and options are read-only.