Why the Agent SDK doesn't need the "description schema" of a tool

[Stephen-SMJ]

Question

Hi, I want to know why the current Agent SDK does not need the "description schema" of tools when using a functional tool. For example:

@function_tool
def get_weather(city: str) -> str:
return f"The weather in {city} is sunny."

Previously, we needed to provide another JSON description like:
tools = [
{
"type": "function",
"function": {
"name": "get_weather",
"description": "Get the current weather in a given location",
"parameters": {
"type": "object",
"properties": {
"location": {
"type": "string",
"description": "The city and state, e.g. San Francisco, CA",
},
},
"required": ["location"],
}
}
}
]

[rm-openai]

It doesn't need it, but it definitely can accept it. For example:

@function_tool
def get_weather(city: str) -> str:
    """Get the weather for a given city."""
   ...

This will extract Get the weather for a given city as the description. You can also do @function_tool(description_override="...").

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[github-actions]

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