Is io.github.OliverGrabner/composer safe to use?

io.github.OliverGrabner/composer has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.

How do I install io.github.OliverGrabner/composer?

io.github.OliverGrabner/composer supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

Is io.github.OliverGrabner/composer actively maintained?

io.github.OliverGrabner/composer is actively maintained — last commit was 1 day ago. It has 3 GitHub stars.

io.github.OliverGrabner/composer MCP Server — Score: 55/100 (C)

Should you use this server?

Give your AI coding agent an architecture canvas. Design, visualize, and evolve software architecture diagrams - right from your IDE.

✓

Is it safe?

No known CVEs for @usecomposer/mcp.

No authentication — any process on your machine can connect.

License not specified.

✓

Is it maintained?

Last commit 1 days ago. 3 stars.

Will it work with my client?

Transport: stdio, http. Works with Claude Desktop, Cursor, Claude Code, and most MCP clients.

Score Breakdown

MCPpedia Score

Click each category to see evidence

55C

Last scored 5h ago

How we score →

Security

19/30

No known vulnerabilities.

✓

Known CVEs — No known CVEs for @usecomposer/mcpcheck OSV.dev

○

Tool safety — No tools to analyze

○

Tool poisoning — No tools to analyze

○

Injection vectors — No tools to analyze

○

Tool stability — First scan — baseline recorded

○

Dependency health — found on deps.dev, recently updated

✗

License — No license specified

○

Authentication

Composer MCP Server

Give your AI coding agent an architecture canvas.
Design, visualize, and evolve software architecture diagrams - right from your IDE.

Composer is a visual system design tool that lets AI coding agents create and modify interactive architecture diagrams through MCP (Model Context Protocol). Your agent gets tools to add services, databases, queues, and connections, and you get a live canvas at usecomposer.com that updates in real-time.

Your IDE  <-->  MCP Server (this package)  <-->  Composer API  <-->  Your Diagram

Getting Started

Connect your IDE

Claude Code:

claude mcp add --transport http composer https://mcp.usecomposer.com

Cursor — create .cursor/mcp.json in your project root:

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

Your browser will open for authorization on first use.

Claude Code

claude mcp add --transport http composer https://mcp.usecomposer.com

Cursor

Create .cursor/mcp.json in your project root:

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

Codex

codex mcp add composer -- npx -y @usecomposer/mcp --stdio

VS Code (Copilot Chat)

Create .vscode/mcp.json in your project root:

{
  "servers": {
    "composer": {
      "type": "http",
      "url": "https://mcp.usecomposer.com"
    }
  }
}

VS Code (Cline)

Open Cline sidebar > Settings (gear icon) > MCP Servers > Add Remote Server:

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

VS Code (Continue)

Add to .continue/config.yaml:

mcpServers:
  - name: composer
    url: https://mcp.usecomposer.com

Windsurf

Add to ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "composer": {
      "serverUrl": "https://mcp.usecomposer.com"
    }
  }
}

Note: Windsurf uses "serverUrl" instead of "url".

OpenCode

Create opencode.json in your project root:

{
  "mcp": {
    "composer": {
      "type": "remote",
      "url": "https://mcp.usecomposer.com"
    }
  }
}

Tools

Diagram Management

Tool	Description
`list_diagrams`	List all your diagrams. Call this first to find which diagram to work on
`create_diagram`	Create a new diagram and auto-select it for this session
`select_diagram`	Select which diagram to work on for this session
`rename_diagram`	Rename the currently selected diagram

Note: Call list_diagrams then select_diagram (o

... View full README on GitHub

io.github.OliverGrabner/composer

Quick Install

Should you use this server?

Test This Server

Score Breakdown

MCPpedia Score

Security

Reviews

Frequently Asked Questions

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Discussion

Getting Started

Connect your IDE

Tools

Diagram Management