read_tags

The board's tags (Kanban labels, asset, research, breakdown, flowchart node, review and wireframe screen tags are one set): each with how often it is used and in which sheets (sheetId $library is the asset library). With tag, the items carrying that tag across tabs. Tags are case-insensitive; reuse an existing spelling. Details: /docs/mcp/read_tags.

List the board's tags, most used first, with per-sheet counts. Kanban card labels, asset tags, research subject tags, breakdown moment tags, flowchart node tags, review tags, wireframe screen tags, data table/column/record tags and document section tags (a heading block's attrs.tags, set with replace_block; the section runs to the next heading of the same or higher level) are the same tags. Pass tag to find everything carrying one, across tabs (kind + id + title per item, then read that tab for details). Tagging: prefer an existing spelling when tagging, since tags match case-insensitively and are coloured by name. sheetId $library is the board's asset library.