Does O3 model usage allow functions? 'messages[59].role' does not support 'function'

[DanijelDomazet]

I'm trying to use o3 model and it works OK with --model o3 --temperature 1.

However, seems like the function usage is problematic.

For example "List me files in tmp directory" successfully executes ls -al /tmp, but then before commenting anything, it fails with:

BadRequestError: Error code: 400 - 
{'error': 
{'message': "Unsupported value: 'messages[59].role' does not support 'function' with this model.", 'type': 'invalid_request_error', 'param': 'messages[59].role', 
'code': 'unsupported_value'}}

The roles I see used are "user" for questions, and "assistant" for answers. Does this error mean that I have to set the role to something else?

Note, I've used functions with --model gpt-4o without problems.

[DanijelDomazet]

I've changed handlers.py, the role from function to developer:

messages.append({"role": "function", "content": result, "name": name})

to

messages.append({"role": "developer", "content": result, "name": name})

That works, but not sure why.

Does anyone know the proper fix for this? I would expect "role": "tool" to be the right choice, but it fails with "Invalid parameter: messages with role 'tool' must be a response to a preceeding message with 'tool_calls'.".