----------------------------- **While I generate an answer, here are some sources that might be helpful**: * [Server Events]() * [Create Assistant]() * [Update Assistant]() * [Get Assistant]() -----------------------------

### Answer To diagnose why your transient assistant is not sending the user's input to the hosted function, consider the following points: 1. **Function Definition**: Ensure that your assistant's function is correctly defined in the model's

functions

array. Here is an example of how you might define a custom function:

json
    {
        "functions": [
            {
                "name": "sendUserMessage",
                "description": "Send the user's message to the hosted function.",
                "parameters": {
                    "type": "object",
                    "properties": {
                        "message": {
                            "type": "string",
                            "description": "The user's message."
                        }
                    }
                }
            }
        ]
    }

[(1)]() 2. **Server URL Configuration**: Make sure that the

serverUrl

is correctly set in your assistant configuration when creating or updating the assistant. This URL is where Vapi will send the function call information.

json
    {
        "serverUrl": "https://your-function-url"
    }

[(2)]() , [(3)]() , [(4)]() 3. **Handling Function Calls**: Ensure that your server correctly handles the POST requests and returns the appropriate response:

json
    {
        "message": {
            "type": "function-call",
            "call": { "Call Object" },
            "functionCall": {
                "name": "sendUserMessage",
                "parameters": "{ \"message\": \"User's input\"}"
            }
        }
    }

[(5)]() 4. **Server Response**: Verify that your server responds with the expected JSON object:

json
    {
        "result": "Function executed successfully"
    }

If all these configurations are correct and it still doesn't work, you might have to check your server logs for any errors or issues with the function execution.