Build Type-Safe Agent with Pydantic AI

Linked challenge: Type-Safe Debit Processing & Fee Optimization Agent with Pydantic AI

Prompt source

implementation11 lines3 sectionsNo variables0 checklist items

from pydantic import BaseModel, Field
from pydantic_ai import Agent, RunContext

class DebitRoutingResult(BaseModel):
    selected_network: str = Field(description="Chosen debit network rail")
    calculated_fee: float = Field(ge=0.0, description="Total interchange plus processing fee")
    compliance_pass: bool

debit_agent = Agent(
    'openai:gpt-4o',
    result_type=DebitRoutingResult,
    system_prompt="You are a debit network optimization agent. Evaluate network fees and pick the lowest-cost compliant network."
)