awslabs.aws-diagram-mcp-server 1.0.23

An MCP server that seamlessly creates diagrams using the Python diagrams package DSL

⚠️ DEPRECATION NOTICE: This server is deprecated and will no longer receive updates. Please use the diagram agent skill in the deploy-on-aws plugin instead, which generates equivalent diagrams directly through Claude Code without requiring a running MCP server. See the migration guide for step-by-step instructions.

AWS Diagram MCP Server

Model Context Protocol (MCP) server for AWS Diagrams

This MCP server that seamlessly creates diagrams using the Python diagrams package DSL. This server allows you to generate AWS diagrams, sequence diagrams, flow diagrams, and class diagrams using Python code.

Prerequisites

1. Install uv from Astral or the GitHub README
2. Install Python using uv python install 3.10
3. Install GraphViz https://www.graphviz.org/

Installation

Kiro	Cursor	VS Code

Configure the MCP server in your MCP client configuration (e.g., for Kiro, edit ~/.kiro/settings/mcp.json):

{
  "mcpServers": {
    "awslabs.aws-diagram-mcp-server": {
      "command": "uvx",
      "args": ["awslabs.aws-diagram-mcp-server"],
      "env": {
        "FASTMCP_LOG_LEVEL": "ERROR"
      },
      "autoApprove": [],
      "disabled": false
    }
  }
}

Windows Installation

For Windows users, the MCP server configuration format is slightly different:

{
  "mcpServers": {
    "awslabs.aws-diagram-mcp-server": {
      "disabled": false,
      "timeout": 60,
      "type": "stdio",
      "command": "uv",
      "args": [
        "tool",
        "run",
        "--from",
        "awslabs.aws-diagram-mcp-server@latest",
        "awslabs.aws-diagram-mcp-server.exe"
      ],
      "env": {
        "FASTMCP_LOG_LEVEL": "ERROR",
        "AWS_PROFILE": "your-aws-profile",
        "AWS_REGION": "us-east-1"
      }
    }
  }
}

or docker after a successful docker build -t awslabs/aws-diagram-mcp-server .:

  {
    "mcpServers": {
      "awslabs.aws-diagram-mcp-server": {
        "command": "docker",
        "args": [
          "run",
          "--rm",
          "--interactive",
          "--env",
          "FASTMCP_LOG_LEVEL=ERROR",
          "awslabs/aws-diagram-mcp-server:latest"
        ],
        "env": {},
        "disabled": false,
        "autoApprove": []
      }
    }
  }

Features

The Diagrams MCP Server provides the following capabilities:

1. Generate Diagrams: Create professional diagrams using Python code
2. Multiple Diagram Types: Support for AWS architecture, sequence diagrams, flow charts, class diagrams, and more
3. Customization: Customize diagram appearance, layout, and styling
4. Security: Code scanning to ensure secure diagram generation

Quick Example

from diagrams import Diagram
from diagrams.aws.compute import Lambda
from diagrams.aws.database import Dynamodb
from diagrams.aws.network import APIGateway

with Diagram("Serverless Application", show=False):
    api = APIGateway("API Gateway")
    function = Lambda("Function")
    database = Dynamodb("DynamoDB")

    api >> function >> database

Development

Testing

The project includes a comprehensive test suite to ensure the functionality of the MCP server. The tests are organized by module and cover all aspects of the server's functionality.

To run the tests, use the provided script:

./run_tests.sh

This script will automatically install pytest and its dependencies if they're not already installed.

Or run pytest directly (if you have pytest installed):

pytest -xvs tests/

To run with coverage:

pytest --cov=awslabs.aws_diagram_mcp_server --cov-report=term-missing tests/

For more information about the tests, see the tests README.

Development Dependencies

To set up the development environment, install the development dependencies:

uv pip install -e ".[dev]"

This will install the required dependencies for development, including pytest, pytest-asyncio, and pytest-cov.