Is the Cnvs Whiteboard MCP server down?

mcp-registry/app.cnvs/whiteboard · v0.1.0

Also listed as glama/lksrz/cnvs-whiteboard

As of 2026-10-25 08:43 UTC, the Cnvs Whiteboard MCP server is up with a Glimind reliability score of 94/100 (grade A). Over the last 30 days it answered 100% of Glimind's liveness checks. It had 1 outage in 90 days, with a median recovery of 1 minutes.

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

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

{
  "mcpServers": {
    "cnvs-whiteboard-mcp-server": {
      "type": "http",
      "url": "https://cnvs.app/mcp"
    }
  }
}

Third-party server, listed as discovered. Review its source before installing.

Agent-readiness: B (80/100)

What to fix (3)

Auto-fix: 1 corrected tool definition

Paste-ready definitions with the problems above fixed. Changes marked verify need a human look. 23 tool(s) still need parameter descriptions written by someone who knows the API. All of them as JSON: /v1/readiness/mcp-registry%2Fapp.cnvs%2Fwhiteboard/fixes

{
  "name": "draw_stroke",
  "description": "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 circle wants ~20. Stroke width is fixed at 3 px; `color` is a NAME, not hex (case-insensitive): 'auto'/''/'black'/omitted for theme-aware ink, or 'red', 'blue', 'green', 'orange', 'yellow', 'pink', 'purple', 'maroon', 'brown', 'gray', 'lightgray', 'teal', 'sage', 'sky', 'lavender' — anything else (including a literal hex like '#ff0000') silen",
  "inputSchema": {
    "type": "object",
    "required": [
      "board_id",
      "points"
    ],
    "properties": {
      "id": {
        "type": "string"
      },
      "color": {
        "type": "string"
      },
      "author": {
        "type": "string"
      },
      "points": {
        "description": "Points as [[x,y],...], flat [x1,y1,x2,y2,...], or a JSON string of either.",
        "type": "string"
      },
      "board_id": {
        "type": "string"
      },
      "access_key": {
        "type": "string",
        "description": "8-character lowercase alphanumeric board access key when the board is locked (legacy 6-character lowercase alphanumeric keys are also accepted). Equivalent to setting the `X-Board-Key` HTTP header on the JSON-RPC POST. Omit for unlocked boards. Obtain via POST /api/boards/<id>/lock."
      }
    }
  },
  "annotations": {
    "readOnlyHint": false,
    "openWorldHint": true,
    "destructiveHint": true
  },
  "title": "Draw Stroke"
}

Get alerted

Get an email or webhook when this server's readiness drops by 10+ points, tool-poisoning text appears, or a tool breaks:

curl -X POST https://glimind.com/v1/subscriptions -H 'content-type: application/json' -d '{"tools":["mcp-registry/app.cnvs/whiteboard"],"email":"[email protected]"}'

Agents: watch_tool({"toolId": "mcp-registry/app.cnvs/whiteboard"}) over MCP.

Passed

• Every tool declares whether it is read-only or destructive.
• No tool-poisoning patterns (hidden characters, instruction overrides, concealment, secret access, tool shadowing).
• Tool names are unique and portable across clients.
• Speaks MCP 2025-06-18.
• 99.98% uptime over 30 days.
• No breaking contract changes in 30 days.

Largest tool definitions

• create_board ~1,005 tokens
• add_text ~507 tokens
• create_task ~411 tokens
• create_tasks ~400 tokens
• set_board_mode ~374 tokens

Static checks of the advertised tools/list (schema, descriptions, annotations, tool-poisoning patterns, names, size) plus observed protocol, uptime, latency and contract changes. Read-only: no tool is ever called. Weights: schema 15, docs 20, safety 15, efficiency 15, compatibility 15, protocol 5, reliability 10, stability 5. Token counts are estimates (~3.6 characters per token).

Operator? Fix these, then re-check live. Embed the readiness badge:

[![MCP agent-readiness](https://glimind.com/v1/readiness/badge/mcp-registry%2Fapp.cnvs%2Fwhiteboard.svg)](https://glimind.com/server/mcp-registry%2Fapp.cnvs%2Fwhiteboard?ref=badge)

<a href="https://glimind.com/server/mcp-registry%2Fapp.cnvs%2Fwhiteboard?ref=badge"><img src="https://glimind.com/v1/readiness/badge/mcp-registry%2Fapp.cnvs%2Fwhiteboard.svg" alt="MCP agent-readiness"></a>

.. image:: https://glimind.com/v1/readiness/badge/mcp-registry%2Fapp.cnvs%2Fwhiteboard.svg
   :target: https://glimind.com/server/mcp-registry%2Fapp.cnvs%2Fwhiteboard?ref=badge
   :alt: MCP agent-readiness

Tool-definition log

Glimind records every version of this server's tool definitions in a signed, append-only transparency log. Current manifest sha256:b15887aef0aa236f…, first seen 2026-10-17, included at leaf 6781 of 64,913. Version history · verify what your client received.

Tools (25)

• add_image
• add_link
• add_text
• create_board
• create_column
• create_task
• create_tasks
• delete_column
• delete_task
• draw_stroke
• erase
• export_tasks
• get_board
• get_preview
• list_tasks
• move
• move_task
• open_board
• query_tasks
• set_board_mode
• set_column_width
• set_lane
• update_column
• update_task
• wait_for_update

Compare: most reliable media servers · most reliable communication servers · most reliable knowledge servers · most reliable productivity servers · most reliable files servers

claude mcp add --transport http glimind https://glimind.com/mcp

{
  "mcpServers": {
    "glimind": {
      "type": "http",
      "url": "https://glimind.com/mcp"
    }
  }
}

FAQ

Is the Cnvs Whiteboard MCP server down right now?

As of 2026-10-25 08:43 UTC, the Cnvs Whiteboard MCP server is up with a Glimind reliability score of 94/100 (grade A). Over the last 30 days it answered 100% of Glimind's liveness checks. It had 1 outage in 90 days, with a median recovery of 1 minutes.

How many tools does Cnvs Whiteboard MCP server provide?

Cnvs Whiteboard MCP server advertises 25 tools, including add_image, add_link, add_text, create_board, create_column.

How do I install Cnvs Whiteboard MCP server?

Point your MCP client at this streamable-http endpoint: https://cnvs.app/mcp

Is the Cnvs Whiteboard MCP server safe to connect to an AI agent?

Glimind scanned all 25 tool definitions for tool-poisoning patterns — hidden or invisible characters, instructions that override the model, concealment from the user, requests to read credential or MCP config files, conversation exfiltration and cross-tool shadowing — and found none. This checks what the server tells the model, not what its code does; review the source before granting access to sensitive data.

Operator of Cnvs Whiteboard MCP server?

Status page: 90-day uptime, every outage and how long it lasted.

Claim this listing to get the Verified operator marker, a remediation checklist and owner analytics, or embed the live badge from any of the tool pages above. Maintainers: alerts, deploy attestation and monthly reports.

Status is an automated estimate from Glimind's liveness checks (handshake and tool listing only; no tool is ever called) and may lag or differ from your network. Glimind is not affiliated with this server or its operator. Operator? Request a correction or opt out at https://glimind.com/opt-out.