How do i dynamically create a function tool from a json LiveKit Community #ask-ai

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How do i dynamically create a function tool from a...

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cool-iron-91629

05/08/2025, 2:56 PM

How do i dynamically create a function tool from a json?

tall-airline-16756

05/08/2025, 2:56 PM

Thanks for reaching out, Rithvik. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.

tall-airline-16756

05/08/2025, 2:57 PM

You can dynamically create a function tool from a JSON schema using the

function_tool

decorator with the

raw_schema

parameter. Here's an example:

Copy code

from livekit.agents import function_tool

# Create a function tool using raw JSON schema
@function_tool(raw_schema={
    "name": "my_function",
    "description": "Description of my function",
    "parameters": {
        # JSON schema parameters here
    }
})
async def my_function(raw_arguments: dict[str, object]):
    # Function implementation
    # raw_arguments contains the parsed JSON arguments
    pass

The

raw_schema

parameter accepts a dictionary that follows OpenAI's function definition format, which must include at least the

name

and

parameters

keys. This method is compatible with LLM providers supporting raw JSON Schema-based function definitions. Sources: Tree View: | dse-workbench

cool-iron-91629

05/08/2025, 4:34 PM

What would the

# JSON schema parameters

here look like?

tall-airline-16756

05/08/2025, 4:34 PM

Unfortunately, the sources I reviewed do not provide specific examples of what the

# JSON schema parameters

should look like in practice. However, the

raw_schema

must include a

name

and

parameters

key, and the parameters should follow the JSON schema format. If you have a specific use case in mind, I recommend defining the parameters based on the expected input and output of your function, adhering to JSON schema standards. If you need further assistance, feel free to provide more details!

cool-iron-91629

05/08/2025, 4:40 PM

@function_tool(_raw_schema_={ "name": func_name, "description": tool.description, "parameters": { "type": "object", "properties": { "patient_first_name": {"type": "string"}, "patient_last_name": {"type": "string"}, "patient_date_of_birth": {"type": "string"}, "patient_phone_number": {"type": "string"} } } }) Does this look correct?

tall-airline-16756

05/08/2025, 4:40 PM

Your JSON schema appears to be structured correctly for defining a function tool. Here's a breakdown of your schema: • `name`: Specifies the name of the function. • `description`: Provides a description of the function. • `parameters`: Defines the expected input as an object with specific properties. • `properties`: Lists the required fields, each with a type (e.g.,

string

). As long as the

parameters

key adheres to JSON schema standards, this should work. If you encounter any issues, feel free to share the error or behavior you're observing, and I can assist further!

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