Documentation Index
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Method signature
public getHost(port: number): string
Parameters
| Parameter | Type | Required | Description |
|---|
port | number | Yes | The port number to get the host URL for |
Return value
| Type | Description |
|---|
string | The host URL that can be used to access the specified port in the sandbox |
Examples
Get Host for Web Server
import { VibeKit } from 'vibekit';
const vibekit = new VibeKit(config);
// Start a web server on port 3000
await vibekit.executeCommand('npm run dev -- --port 3000', {
background: true
});
// Get the host URL for the web server
const hostUrl = vibekit.getHost(3000);
console.log('Web server accessible at:', hostUrl);
// Output: https://3000-sandbox-id.e2b.dev
Get Host for API Server
// Start an API server
await vibekit.executeCommand('python -m http.server 8080', {
background: true
});
// Get the host URL for the API
const apiUrl = vibekit.getHost(8080);
console.log('API server accessible at:', apiUrl);
// Output: https://8080-sandbox-id.e2b.dev
Get Host for Database Connection
// Start a database server
await vibekit.executeCommand('mongod --port 27017', {
background: true
});
// Get the host URL for database access
const dbHost = vibekit.getHost(27017);
console.log('Database accessible at:', dbHost);
// Output: https://27017-sandbox-id.e2b.dev
Error handling
The method throws errors in the following cases:
- Sandbox not active: When called without an active sandbox environment
- Unsupported sandbox: When called with unsupported sandbox environments (FlyIO, Modal)
- Invalid port: When the port number is invalid or out of range
try {
const hostUrl = vibekit.getHost(3000);
console.log('Host URL:', hostUrl);
} catch (error) {
if (error.message.includes('sandbox')) {
console.error('Active sandbox required for getHost functionality');
} else if (error.message.includes('port')) {
console.error('Invalid port number provided');
} else {
console.error('Failed to get host URL:', error.message);
}
}
Sandbox compatibility
| Sandbox Type | Supported | Notes |
|---|
| E2B | ✅ Yes | Full support with automatic URL generation |
| Daytona | ✅ Yes | Full support with automatic URL generation |
| Cloudflare | ✅ Yes | Full support with automatic URL generation |
| Northflank | ✅ Yes | Full support with automatic URL generation |
| FlyIO | ❌ No | Port forwarding not yet implemented |
| Modal | ❌ No | Port forwarding not yet implemented |
Use cases
- Web Development: Access development servers running in the sandbox
- API Testing: Get URLs for API servers to test endpoints
- Database Access: Connect to databases running in the sandbox
- Microservices: Access multiple services running on different ports
- Live Previews: Generate URLs for real-time preview of web applications
Notes
- Multi-Sandbox Support: This method is available for E2B, Daytona, Cloudflare and Northflank sandbox environments
- Automatic URL Generation: Supported sandboxes automatically generate secure HTTPS URLs for exposed ports
- Real-time Access: URLs are immediately accessible once the service starts on the specified port
- Security: All generated URLs use HTTPS and are scoped to the specific sandbox instance
- Port Range: Standard port ranges (1-65535) are supported
- No Port Validation: The method doesn’t validate if a service is actually running on the specified port