One post tagged with "Rules Engine"

Your LLM Shouldn't Be Handling If/Else Logic

June 16, 2026 · 4 min read

Author of airules

Here's code that's running in production right now across thousands of applications:

from pydantic_ai import Agent
from enum import Enum

class Team(Enum):
    BILLING = "billing"
    AUTH = "auth"
    SHIPPING = "shipping"
    RETURNS = "returns"
    GENERAL = "general"

agent = Agent(
    "openai:gpt-4o-mini",
    output_type=Team,
    system_prompt="Route this support ticket to the correct team.",
)

async def route(subject: str, body: str) -> Team:
    result = await agent.run(f"Subject: {subject}\n\n{body}")
    return result.output

It's clean. It's flexible. And every time a user types "I want to unsubscribe" or "forgot my password," it burns tokens to answer a question the model already answered yesterday.