# n8n MCP Server for VS Code

A Model Context Protocol (MCP) server that integrates n8n workflow automation directly into VS Code through GitHub Copilot Chat.

## Features

- **List Workflows**: Browse all workflows in your n8n instance
- **Get Workflow Details**: View complete workflow configuration, nodes, and connections
- **Update Workflows**: Modify workflow settings, nodes, and connections
- **Activate/Deactivate**: Control workflow activation state
- **Execute Workflows**: Manually trigger workflow execution
- **View Executions**: Check execution history and results

## Prerequisites

- Node.js (v18 or higher)
- VS Code with GitHub Copilot Chat extension
- Access to an n8n instance (running at `http://srvdocker02:8098` by default)

## Installation

1. Clone or navigate to this repository:
```bash
cd /home/rwiegand/Nextcloud/entwicklung/Werkzeuge/n8n_vscode_integration
```

2. Install dependencies:
```bash
npm install
```

3. Build the project:
```bash
npm run build
```

4. Configure your n8n instance URL (if different from default):
   - Copy `.env.example` to `.env`
   - Update `N8N_BASE_URL` with your n8n instance URL
   - If your n8n instance requires authentication, add your API key:
     ```
     N8N_API_KEY=your-api-key-here
     ```

## Configuration

### For VS Code

The `.vscode/settings.json` file is already configured to use this MCP server. The configuration looks like:

```json
{
  "mcpServers": {
    "n8n": {
      "command": "node",
      "args": [
        "/home/rwiegand/Nextcloud/entwicklung/Werkzeuge/n8n_vscode_integration/dist/index.js"
      ],
      "env": {
        "N8N_BASE_URL": "http://srvdocker02:8098"
      }
    }
  }
}
```

### For GitHub Copilot Chat (Global Configuration)

To use this MCP server across all VS Code workspaces, add it to your global VS Code settings:

1. Open VS Code Settings (JSON) with `Cmd/Ctrl + Shift + P` → "Preferences: Open User Settings (JSON)"
2. Add the MCP server configuration:

```json
{
  "github.copilot.chat.mcp.servers": {
    "n8n": {
      "command": "node",
      "args": [
        "/home/rwiegand/Nextcloud/entwicklung/Werkzeuge/n8n_vscode_integration/dist/index.js"
      ],
      "env": {
        "N8N_BASE_URL": "http://srvdocker02:8098"
      }
    }
  }
}
```

If your n8n instance requires an API key, add it to the env section:
```json
"env": {
  "N8N_BASE_URL": "http://srvdocker02:8098",
  "N8N_API_KEY": "your-api-key-here"
}
```

## Usage

After installation and configuration, you can interact with your n8n instance through GitHub Copilot Chat in VS Code using natural language:

### Example Commands

**List all workflows:**
```
@workspace List all my n8n workflows
```

**Get workflow details:**
```
@workspace Show me the details of workflow ID 123
```

**Update a workflow:**
```
@workspace Update workflow 123 to change its name to "New Name"
```

**Activate/Deactivate workflows:**
```
@workspace Activate workflow 123
@workspace Deactivate workflow 456
```

**Execute a workflow:**
```
@workspace Execute workflow 123
```

**View execution history:**
```
@workspace Show me the recent executions for workflow 123
@workspace Show me the last 10 executions
```

**Get execution details:**
```
@workspace Show me details of execution abc-123
```

## Available MCP Tools

The server exposes the following tools:

1. **list_workflows** - List all workflows
2. **get_workflow** - Get detailed workflow information
3. **update_workflow** - Update workflow configuration
4. **activate_workflow** - Activate a workflow
5. **deactivate_workflow** - Deactivate a workflow
6. **execute_workflow** - Execute a workflow manually
7. **get_execution** - Get execution details
8. **list_executions** - List workflow executions

## Development

### Watch Mode
```bash
npm run watch
```

### Build
```bash
npm run build
```

### Run Directly
```bash
npm run dev
```

## Troubleshooting

### Server Not Connecting

1. Verify the build is up to date: `npm run build`
2. Check that the path in settings.json is correct
3. Restart VS Code after making configuration changes
4. Check the Output panel in VS Code for error messages

### Authentication Issues

If your n8n instance requires authentication:
1. Generate an API key in your n8n instance (Settings → API)
2. Add the `N8N_API_KEY` environment variable to your configuration

### Network Issues

If you can't connect to your n8n instance:
1. Verify the n8n instance is running: `curl http://srvdocker02:8098/healthz`
2. Check firewall settings
3. Verify the URL in your configuration is correct

## API Reference

### n8n API Endpoints Used

- `GET /api/v1/workflows` - List workflows
- `GET /api/v1/workflows/:id` - Get workflow
- `PATCH /api/v1/workflows/:id` - Update workflow
- `POST /api/v1/workflows/:id/execute` - Execute workflow
- `GET /api/v1/executions` - List executions
- `GET /api/v1/executions/:id` - Get execution

## License

MIT

## Contributing

Contributions are welcome! Please feel free to submit a Pull Request.