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Custom Agent

The CustomAgent lets you define your own agent logic using Python functions, offering flexibility for anything from simple query-response tasks to advanced workflows involving APIs, analytics, or multi-step processing.

Unlike the Base UtilityAgent, which runs on the AI Refinery service, a CustomAgent executes locally on the SDK side and is not pre-configured with LLM interaction or prompt logic. Instead, you define its behavior in Python and register it in an executor_dict for orchestration within the platform.

Workflow Overview

Here are the workflow for CustomAgent:

  1. Function Definition: You define an async Python function that accepts a string query and returns a string result.

  2. Executor Registration: This function must be added to an executor_dict with a unique name. This name is then referenced in your orchestration YAML under agent_name.

  3. Integration: The AI Refinery platform invokes your custom function when routing queries through the orchestrator.

This design allows you to extend the platform with any logic not supported by built-in agents.

Usage

To register a CustomAgent, implement a Python async function like this:

async def your_custom_agent(query: str) -> str:
    """
    Processes the given query and generates a response.

    Args:
        query (str): The input query to be processed.

    Returns:
        str: The response from the agent.
    """
    # Example logic — replace with your own
    response = f"This is a custom response to: {query}"
    return response

Then register it in the executor_dict:

executor_dict = {
    "CustomAgentName": your_custom_agent
}

QuickStart

Here is an example to custom agent that generates synthetic data:

import os
from air import AsyncAIRefinery
from dotenv import load_dotenv

load_dotenv() # loads your API_KEY from your local '.env' file
api_key=str(os.getenv("API_KEY"))


async def simple_agent(query: str):
    client = AsyncAIRefinery(api_key=api_key)

    prompt = f"""
    Your task is to generate synthetic data that can help answer the user question below.
    Do not mention that this is synthetic data.

    {query}
    """

    response = await client.chat.completions.create(
        messages=[{"role": "user", "content": prompt}],
        model="meta-llama/Llama-3.1-70B-Instruct",
    )

    return response.choices[0].message.content
This simple_agent function uses the AIRefinery SDK to generate a synthetic response. You can replace this logic with your own API call, tool invocation, or data processing.

Template YAML Configuration of CustomAgent

The CustomAgent also supports additional settings. See the template YAML below for all available options:

utility_agents:
  - agent_class: CustomAgent  # Required: Must be 'CustomAgent'
    agent_name: CustomAgentName  # Required: Must match name in executor_dict
    agent_description: Generate synthetic data from query  # Optional

orchestrator:
  agent_list:
    - agent_name: CustomAgentName