I'm not able to run any function calls in my application, I think vapi.on method is not working as expected Please look into it as soon as possbile

Hi there! I understand you're having urgent issues with function calls in your application, specifically with the

vapi.on

method. Let me help you troubleshoot this! 🔍 While I don't have specific information about the

vapi.on

method itself, I can definitely help with general function call implementation in Vapi and common issues that might be affecting your application. ## Function Calls in Vapi Vapi fully supports [OpenAI's function calling API](https://docs.vapi.ai/server-url/events), allowing assistants to ping your server to perform actions like sending emails, retrieving information, and more. ## Common Issues & Troubleshooting Several issues could prevent function calls from working properly: 1. **Configuration Issues**: According to [Discord discussions](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1334114042876264518), function calls may not trigger due to configuration problems within your Vapi setup. 2. **Client-Side SDK Limitations**: You cannot make function calls directly from the client-side SDK. Instead, use client-side events such as

ClientMessageToolCalls

and

ClientMessageToolCallsResult

to update the UI, as mentioned in [Discord conversations](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1330803502615625738). 3. **Server Processing**: Ensure your server correctly processes HTTP requests and sends appropriate JSON responses. Verify that tools are configured to trigger under the right conditions within your voice application flow. 4. **Function Call Requirements**: For a function to be called properly, you need: - The function name and required endpoint - Necessary parameters - Correct headers and authentication tokens (if required) - Appropriate HTTP method (usually POST for webhooks)

Please provide your call id

Hey! To help track down this issue, could you share: - The call ID - When exactly this happened (the timestamp) - What response you expected to get - What response you actually got instead This would really help us figure out what went wrong!