Diagrams.so vs Localstack MCP Server

In-depth architectural comparison of the Diagrams.so and Localstack MCP Server MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Diagrams.so when:

• You need dedicated capabilities in the Cloud Platforms domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: generate_diagram, edit_diagram, fix_warning.

Explore Diagrams.so Details

Choose Localstack MCP Server when:

• You need dedicated capabilities in the Cloud Platforms domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: Lifecycle management of LocalStack runtime with authentication, Automatic detection and deployment of infrastructure as code projects, Natural language search of LocalStack documentation and guides.

Feature & Specification Comparison

Specification	Diagrams.so Cloud Platforms	Localstack MCP Server localstack Cloud Platforms
Summary	Generate and edit AWS, Azure, GCP and Kubernetes architecture diagrams as editable draw.io files.	A MCP server for LocalStack to manage local AWS environments, including lifecycle operations, infra deployments, log analysis, fault injection, and state management.
Category & Scope	Cloud Platforms

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "diagrams-so": {
      "command": "npx",
      "args": [
        "-y",
        "@diagrams-so/mcp"
      ]
    }
  }
}

{
  "mcpServers": {
    "localstack-localstack-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@localstack/localstack-mcp-server"
      ]
    }
  }
}

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