CanvasKeep

Name: CanvasKeep
Author: CanvasKeep

by CanvasKeepversion 0.6.2i★ –iRuns on your computer

Registry nameio.github.CanvasKeep/canvaskeep-mcp

Install

Overview

Description from the maker (original English)

Create and edit Excalidraw diagrams in your CanvasKeep workspace, with auto-layout and folders.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other
You need to fill in: CANVASKEEP_API_KEY, CANVASKEEP_MASTER_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: CANVASKEEP_API_KEY, CANVASKEEP_MASTER_KEY, CANVASKEEP_API_URL

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "canvaskeep": {
      "command": "npx",
      "args": [
        "-y",
        "canvaskeep-mcp"
      ],
      "env": {
        "CANVASKEEP_API_KEY": "your-value",
        "CANVASKEEP_MASTER_KEY": "your-value",
        "CANVASKEEP_API_URL": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add canvaskeep --env CANVASKEEP_API_KEY=your-value --env CANVASKEEP_MASTER_KEY=your-value --env CANVASKEEP_API_URL=your-value -- npx -y canvaskeep-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "canvaskeep": {
      "command": "npx",
      "args": [
        "-y",
        "canvaskeep-mcp"
      ],
      "env": {
        "CANVASKEEP_API_KEY": "your-value",
        "CANVASKEEP_MASTER_KEY": "your-value",
        "CANVASKEEP_API_URL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "canvaskeep": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "canvaskeep-mcp"
      ],
      "env": {
        "CANVASKEEP_API_KEY": "your-value",
        "CANVASKEEP_MASTER_KEY": "your-value",
        "CANVASKEEP_API_URL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

CANVASKEEP_API_KEY secret required env
API key from your CanvasKeep dashboard (profile menu, API Keys)
CANVASKEEP_MASTER_KEY secret env
Needed to read or edit encrypted diagrams. Copy it from canvaskeep.com/dashboard/encryption
CANVASKEEP_API_URL env
API base URL, override for local development

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account CanvasKeep, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 32466 servers in this category
Published to the registry more recently than 66% of the other 32466 servers in this category
Basic checks equal to or better than 100% of the other 32466 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is CanvasKeep safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: CANVASKEEP_API_KEY, CANVASKEEP_MASTER_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.6.2) reached the registry 19 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, HotCodePush

Alternatives

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Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

CanvasKeep MCP Server

An MCP (Model Context Protocol) server that lets AI tools like Claude Code and Codex generate Excalidraw diagrams and save them directly into your CanvasKeep workspace.

Setup

1. Get an API key

Log in to CanvasKeep
Click your profile menu (top right) and select API Keys
Generate a new key and copy it immediately (you won't see it again)

2. Install and register

Claude Code:

claude mcp add canvaskeep \

-e CANVASKEEP_API_KEY=ck_your_key_here \ -- npx canvaskeep-mcp

Codex / other MCP clients:

"mcpServers": { "canvaskeep": { "command": "npx", "args": ["canvaskeep-mcp"], "env": { "CANVASKEEP_API_KEY": "ck_your_key_here" } } } }

3. Environment variables

Variable	Required	Default	Description
`CANVASKEEP_API_KEY`	Yes	-	Your API key from the CanvasKeep dashboard
`CANVASKEEP_MASTER_KEY`	No	-	Needed to read or edit encrypted diagrams. Copy it from canvaskeep.com/dashboard/encryption (Key for the MCP server)
`CANVASKEEP_API_URL`	No	`https://canvaskeep.com`	API base URL (override for local dev)

Available tools

Tool	Description
`list_workspaces`	List all your workspaces
`create_workspace`	Create a new workspace
`list_folders`	List folders in a workspace
`create_folder`	Create a new folder, optionally nested
`list_diagrams`	List diagrams in a workspace
`create_diagram`	Create a diagram, optionally inside a folder
`update_diagram`	Rename a diagram
`delete_diagram`	Permanently delete a diagram
`get_diagram_summary`	Get diagram metadata and element count
`get_diagram_scene`	Read the full Excalidraw scene of a diagram
`save_diagram_scene`	Write a full Excalidraw scene back to a diagram
`generate_diagram`	Generate a diagram from nodes and edges with auto-layout

Encryption

Diagrams you encrypt in CanvasKeep stay encrypted when an AI tool works with them. When get_diagram_scene or save_diagram_scene touches an encrypted diagram, this server decrypts and re-encrypts it locally (AES-GCM, see src/encryption.ts) using CANVASKEEP_MASTER_KEY. The master key never leaves your machine.

generate_diagram sends the nodes and edges you give it to CanvasKeep, which lays them out on the server, so diagrams generated this way are stored unencrypted.

Example usage

Ask Claude Code something like:

"Draw an architecture diagram of a web app with a React frontend, Node API, PostgreSQL database, and Redis cache"

Claude will use the MCP tools to create a diagram in your CanvasKeep workspace with properly laid-out boxes and labeled arrows.

Development

git clone https://github.com/CanvasKeep/canvaskeep-mcp.git

cd canvaskeep-mcp npm install npm run build CANVASKEEP_API_KEY=ck_... CANVASKEEP_API_URL=http://localhost:3000 node dist/index.js

To run your local build from Claude Code:

claude mcp add canvaskeep \

-e CANVASKEEP_API_KEY=ck_your_key_here \ -- node /path/to/canvaskeep-mcp/dist/index.js

License

MIT

CanvasKeep

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

HotCodePush

README from the maker

CanvasKeep MCP Server

Setup

1. Get an API key

2. Install and register

3. Environment variables

Available tools

Encryption

Example usage

Development

License