My server sent this to VAPI:

{'id': '1276c188-4060-4406-9f1b-b7df114a3660', 'object': 'chat.completion.chunk', 'created': 1725740448, 'model': 'gpt-4o-2024-05-13', 'choices': [{'index': 0, 'delta': {'role': 'assistant', 'content': None, 'tool_calls': [{'index': 0, 'id': '557f9b63-b6d0-4443-953d-3ebc80e43b02', 'function': {'name': 'get_availability', 'arguments': {'startDate': '2024-09-09', 'endDate': '2024-09-17'}}, 'type': 'function'}]}, 'finish_reason': None}], 'usage': None, 'system_fingerprint': 'fp_157b3831f5'}

In VAPI Call log, arguments are empty

{
  "role": "tool_calls",
  "time": 1725740448809,
  "message": "",
  "toolCalls": [
    {
      "id": "557f9b63-b6d0-4443-953d-3ebc80e43b02",
      "type": "function",
      "function": {
        "name": "get_availability",
        "arguments": "{}"
      }
    }
  ],
  "secondsFromStart": 27.923
}

What am I doing wrong? Call ID: 7777220d-803d-4375-ad74-ce91ee5a3458

@Tanush It seems like there might be an issue with the way the arguments are being formatted or transmitted to VAPI. In the server message you sent, the arguments for the

get_availability

function are provided as a JSON object with

startDate

and

endDate

keys. However, in the VAPI Call log, the arguments appear as an empty JSON object (

"{}"

). To resolve this, please ensure that the arguments are being serialized correctly as a JSON object before sending them to VAPI. The correct format should look like this:

json
"arguments": {
  "startDate": "2024-09-09",
  "endDate": "2024-09-17"
}

Make sure that the content-type of your request is set to

application/json

and that the JSON is properly structured as per the VAPI requirements. If you've confirmed that the request is correctly formatted on your end, there might be an issue with the VAPI receiving or logging the arguments, in which case you should contact VAPI support for further assistance.

can you try returning the parameters in stringified form. it's visible from screenshot it got parsed as type object Object. https://cdn.discordapp.com/attachments/1282074312832057486/1282739593367519324/Screenshot_2024-09-09_at_9.57.55_PM.png?ex=66e073d7&is=66df2257&hm=a9db82c97a65c9011efb049688ea1c1c9a35bcbcf55d9a18eb39494e826a3cb6&