PII Detection Guardrail

import asyncio

from agno.agent import Agent
from agno.exceptions import InputCheckError
from agno.guardrails import PIIDetectionGuardrail
from agno.models.openai import OpenAIChat


async def main():
    """Demonstrate PII detection guardrails functionality."""
    print("🛡️ PII Detection Guardrails Demo")
    print("=" * 50)

    # Create an agent with PII detection protection
    agent = Agent(
        name="Privacy-Protected Agent",
        model=OpenAIChat(id="gpt-5-mini"),
        pre_hooks=[PIIDetectionGuardrail()],
        description="An agent that helps with customer service while protecting privacy.",
        instructions="You are a helpful customer service assistant. Always protect user privacy and handle sensitive information appropriately.",
    )

    # Test 1: Normal request without PII (should work)
    print("\n✅ Test 1: Normal request without PII")
    print("-" * 30)
    try:
        agent.print_response(
            input="Can you help me understand your return policy?",
        )
        print("✅ Normal request processed successfully")
    except InputCheckError as e:
        print(f"❌ Unexpected error: {e}")

    # Test 2: Request with SSN (should be blocked)
    print("\n🔴 Test 2: Input containing SSN")
    print("-" * 30)
    try:
        agent.print_response(
            input="Hi, my Social Security Number is 123-45-6789. Can you help me with my account?",
        )
        print("⚠️ This should have been blocked!")
    except InputCheckError as e:
        print(f"✅ PII blocked: {e.message}")
        print(f"   Trigger: {e.check_trigger}")

    # Test 3: Request with credit card (should be blocked)
    print("\n🔴 Test 3: Input containing credit card")
    print("-" * 30)
    try:
        agent.print_response(
            input="I'd like to update my payment method. My new card number is 4532 1234 5678 9012.",
        )
        print("⚠️ This should have been blocked!")
    except InputCheckError as e:
        print(f"✅ PII blocked: {e.message}")
        print(f"   Trigger: {e.check_trigger}")

    # Test 4: Request with email address (should be blocked)
    print("\n🔴 Test 4: Input containing email address")
    print("-" * 30)
    try:
        agent.print_response(
            input="Please send the receipt to john.doe@example.com for my recent purchase.",
        )
        print("⚠️ This should have been blocked!")
    except InputCheckError as e:
        print(f"✅ PII blocked: {e.message}")
        print(f"   Trigger: {e.check_trigger}")

    # Test 5: Request with phone number (should be blocked)
    print("\n🔴 Test 5: Input containing phone number")
    print("-" * 30)
    try:
        agent.print_response(
            input="My phone number is 555-123-4567. Please call me about my order status.",
        )
        print("⚠️ This should have been blocked!")
    except InputCheckError as e:
        print(f"✅ PII blocked: {e.message}")
        print(f"   Trigger: {e.check_trigger}")

    # Test 6: Mixed PII in context (should be blocked)
    print("\n🔴 Test 6: Multiple PII types in one request")
    print("-" * 30)
    try:
        agent.print_response(
            input="Hi, I'm John Smith. My email is john@company.com and phone is 555.987.6543. I need help with my account.",
        )
        print("⚠️ This should have been blocked!")
    except InputCheckError as e:
        print(f"✅ PII blocked: {e.message}")
        print(f"   Trigger: {e.check_trigger}")

    # Test 7: Edge case - formatted differently (should still be blocked)
    print("\n🔴 Test 7: PII with different formatting")
    print("-" * 30)
    try:
        agent.print_response(
            input="Can you verify my credit card ending in 4532123456789012?",
        )
        print("⚠️ This should have been blocked!")
    except InputCheckError as e:
        print(f"✅ PII blocked: {e.message}")
        print(f"   Trigger: {e.check_trigger}")

    print("\n" + "=" * 50)
    print("🎯 PII Detection Demo Complete")
    print("All sensitive information was successfully blocked!")

    # Create an agent with PII detection which masks the PII in the input
    agent = Agent(
        name="Privacy-Protected Agent (Masked)",
        model=OpenAIChat(id="gpt-5-mini"),
        pre_hooks=[PIIDetectionGuardrail(mask_pii=True)],
        description="An agent that helps with customer service while protecting privacy.",
        instructions="You are a helpful customer service assistant. Always protect user privacy and handle sensitive information appropriately.",
    )

    # Test 8: Request with SSN (should be masked)
    print("\n🔴 Test 8: Input containing SSN")
    print("-" * 30)
    agent.print_response(
        input="Hi, my Social Security Number is 123-45-6789. Can you help me with my account?",
    )


if __name__ == "__main__":
    asyncio.run(main())