app.cnvs/whiteboard

up checked 2026-11-11T07:40:02.028Z

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Publisher-provided title

cnvs.app

Publisher-provided description

Real-time collaborative whiteboard — AI agents and humans edit the same board live over MCP.

Summary by lookupd

Lets agents and humans co-edit a live whiteboard: add text, images, links and strokes, or run kanban boards with tasks and columns.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http whiteboard https://cnvs.app/mcp

Codex, remote (streamable-http)

codex mcp add whiteboard --url https://cnvs.app/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "whiteboard": {
      "url": "https://cnvs.app/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (26 tools)

Publisher-provided text

• open_board ALWAYS call this first when given a board URL or ID. Resolves the canonical board id and auto-creates the board row if it does not exist yet. Returns a summary
• create_board Create a fresh board in ONE call — optionally pre-filled with content, auto-laid-out, and/or PIN-locked at create time. Mirrors the extended `POST /api/boards`
• get_board Full structured JSON state of a board: texts (id, x, y, content, color, width, postit, author), strokes (id, points, color, author), images (id, x, y, width, he
• get_preview Compact schematic SVG render of the board (typically a few kB even for dense boards). Returns both an image/svg+xml content block (you can SEE it) and the raw S
• add_text Create a NEW text node, or update an existing one (pass the same `id` to overwrite content/position in place — preferred over creating a duplicate). Supports cn
• add_link Drop a URL capsule onto the board — rendered as a clickable pill showing the hostname. Use this instead of `add_text` when the node is just a link; the capsule
• add_image Place a raster or SVG image on the board at (x, y) with explicit width/height in board pixels. `data_url` MUST be a `data:image/(png|jpeg|gif|webp|svg+xml);base
• draw_stroke Draw a freehand stroke on the board. Use for arrows, underlines, connector lines, annotations, or simple shapes — a straight line needs two points, a rough circ
• move Reposition an existing item to a new (x, y) without retyping its content. Works for every item kind: `text` and `link` set the top-left to (x, y); `line` transl
• erase Delete a single item by id. `kind` MUST match the item type: 'text' for text nodes, 'line' for freehand strokes, 'image' for images — the wrong kind silently ta
• wait_for_update Long-poll: blocks until the next edit lands on this board, then returns. WHEN TO CALL THIS: if your MCP client does NOT surface `notifications/resources/updat
• set_board_mode Choose whether this board is a freeform whiteboard ('draw', the default) or a kanban task board ('todo'). Mode is switchable WHENEVER the board is empty of real
• create_column Add a kanban column (swimlane) to a 'todo' board. Generates and returns a stable column id. `sort` is a float ordering key (ascending); omit to default to 0. `l
• update_column Rename, reorder, recolor or move an existing kanban column. Requires the column `id` (from `list_tasks`). Pass `title`, `sort`, `lane` and/or `color` to change
• delete_column Delete a kanban column by id. Tasks in the column are removed with it. Get the id from `list_tasks`.
• create_task Create a task (card) in a column on a 'todo' board. Generates and returns a stable task id. `column_id` must reference an existing column (see `list_tasks`). `d
• update_task Update an existing task by `id` (from `list_tasks`). Pass only the fields you want to change: `name`, `description`, `due_date`, `priority` ('H'|'M'|'L'), `assi
• move_task Move a task to a column at a given sort position — the kanban drag-and-drop primitive. `column_id` is the destination column and `sort` its float order key (asc
• delete_task Delete a task (card) by id. Get the id from `list_tasks`.
• list_tasks Read the full kanban state of a 'todo' board: `{ mode, columns, tasks }`, both ordered by their `sort` key (ascending). Each task carries its hot fields (name,
• set_lane Set (or clear) the title of a kanban row (lane). Lanes group columns into horizontal swimlanes; a lane is identified by its integer `lane` index (the same index
• set_column_width Set the shared kanban column width in pixels for a 'todo' board (all columns share one width). Clamped to [200, 480]. Read the current value as `colWidth` from
• rename_board Set the shared board name shown to every collaborator (rail label, tab title, export filenames). Works in draw and todo mode. Whitespace is collapsed; max 100 c
• create_tasks Bulk-create multiple task cards in one call — far cheaper than calling `create_task` N times. Pass `tasks`: an array of task objects, each with `column_id` (req
• query_tasks Read tasks from a 'todo' board with server-side filtering — handy for 'what's overdue?' / 'what's assigned to X?' without pulling the whole board. All filters a
• export_tasks Export a 'todo' board's columns + tasks as a single text document. `format` is 'markdown' (a checklist grouped by column, the default) or 'csv' (one row per tas

Details

• Version: 1.0.2
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 404 ms
• First indexed: 2026-11-01T08:51:23.104Z
• Last seen in registry: 2026-11-01T08:51:23.125Z
• Repository: https://github.com/lksrz/cnvs-whiteboard-skills
• Website: https://cnvs.app

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