# Webhook Manager & Test Simulator

> Simulate Telegram webhook payloads, test logic in-browser, and inspect live execution errors.

**Category:** Bot Studio & Development  
**URL:** https://docs.botlify.cloud/?page=webhook-diagnostics  
**Platform:** Botlify Cloud (https://botlify.cloud)  

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## The Test Simulator

      

Debugging webhook endpoints usually requires sending messages on Telegram and checking remote error logs. With Botlify's built-in **Webhook Test Simulator**, you can simulate updates instantly inside Bot Studio.

      

## How Simulation Works

      
        
- Open Bot Studio → Overview or Variables & Cron.

        
- Click Simulate /start Webhook.

        
- Botlify sends an authentic Telegram update payload to your bot's index.php script via local execution.

        
- The simulator displays the full execution output, runtime duration, memory usage, and the last 10 lines of error.log.

      

      
> [!WARNING]
> **Inspect error.log Instantly**
> If your bot code throws a fatal exception or uncaught error, it is recorded in error.log. The studio flags the bot card with a red alert badge so you can resolve issues immediately.