From the README

# @endiagram/mcp

MCP server for [EN Diagram](https://endiagram.com) — structural analysis powered by deterministic graph algorithms.

Write your system in plain text. Get back structural facts: bottlenecks, blast radius, flow landmarks, concurrency groups, and more. No AI inside the computation — every result is deterministic.

## Installation

Run directly:

```bash
npx @endiagram/mcp
```

Or install globally:

```bash
npm install -g @endiagram/mcp
```

## Configuration

### Claude Desktop

Add to your `claude_desktop_config.json`:

```json
{
  "mcpServers": {
    "en-diagram": {
      "command": "npx",
      "args": ["@endiagram/mcp"]
    }
  }
}
```

### Claude Code

```bash
claude mcp add en-diagram npx @endiagram/mcp
```

## Environment Variables

| Variable | Default | Description |
|----------|---------|-------------|
| `EN_API_URL` | `https://api.endiagram.com` | API endpoint for the EN Diagram service |

## Tools

| Tool | Description |
|------|-------------|
| `analyze_syste