There is no cross-board query in the monday.com API. To find all tasks assigned to a specific person across projects in a portfolio, you need to iterate over each project's tasks board and filter by assignee.

Step 1 — Get all tasks board IDs from the portfolio

Follow Step 2 of the List All Projects in a Portfolio skill to extract all tasks board IDs from the portfolio's portfolio_project_link column:

{
  boards(ids: [PORTFOLIO_BOARD_ID]) {
    columns {
      id
      settings_str
    }
  }
}

Parse settings_str for the column with id: "portfolio_project_link" to get the boardIds array.

Step 2 — Query each tasks board for assigned items

For each tasks board ID, use items_page_by_column_values to filter by assignee:

{
  items_page_by_column_values(
    limit: 50,
    board_id: TASKS_BOARD_ID,
    columns: [{ column_id: "project_owner", column_values: ["USER_ID"] }]
  ) {
    cursor
    items {
      id
      name
      board { id name }
      column_values(ids: ["project_owner", "project_dependency"]) {
        id
        type
        text
      }
    }
  }
}

Repeat this query for each board ID. Use cursor for pagination if a single board has more than 50 tasks.

Important notes

• project_owner is the consistent column ID for the assignee on tasks boards — no per-board column inspection is needed.
• This approach requires O(n) requests where n is the number of projects in the portfolio. If you only need tasks across a known subset of projects, pass only those board IDs.
• items_page_by_column_values requires a single board_id — multi-board filtering is not supported.
• query_params rules do not work for people columns. Always use items_page_by_column_values for person-based filtering.