Prompt Defend Python SDK

The official Python SDK for the Prompt Defend AI Security API. Protect your AI applications with our 16-layer guardrail system.

Installation

pip install promptdefend

Quick Start

from promptdefend import PromptDefend

# Initialize the client with your API key
client = PromptDefend(api_key="your-api-key")

# Scan a prompt for security issues
result = client.scan("What is the weather today?")

if result.safe:
    print("✅ Prompt is safe to process")
else:
    print(f"⚠️ Warning: {result.reason}")

Features

• 🛡️ 16-Layer Protection - Comprehensive guardrail system
• 🔒 Prompt Injection Detection - Block jailbreak and injection attempts
• ⚡ Sub-millisecond Latency - Average response time ~0.7ms
• 🐍 Pythonic API - Clean, intuitive interface
• 🔧 Error Handling - Comprehensive exception classes
• 📦 Minimal Dependencies - Only requires requests

Usage

Basic Usage

from promptdefend import PromptDefend

client = PromptDefend(api_key="your-api-key")
result = client.scan("Hello, how are you?")

print(result.safe)    # True or False
print(result.reason)  # Explanation string
print(result.details) # Full detection details

Using Context Manager

from promptdefend import PromptDefend

with PromptDefend(api_key="your-api-key") as client:
    result = client.scan("Tell me a joke")
    print(result.to_dict())

Quick Scan Function

For one-off scans without creating a client instance:

from promptdefend import scan

result = scan(api_key="your-api-key", prompt_text="What is 2+2?")
print(result.safe)

Custom Configuration

from promptdefend import PromptDefend

client = PromptDefend(
    api_key="your-api-key",
    base_url="https://api.promptdefend.dev",  # Optional custom endpoint
    timeout=60  # Custom timeout in seconds
)

Error Handling

The SDK provides specific exception classes for different error types:

from promptdefend import (
    PromptDefend,
    PromptDefendError,
    AuthenticationError,
    NetworkError,
    APIError
)

client = PromptDefend(api_key="your-api-key")

try:
    result = client.scan("Test prompt")
except AuthenticationError as e:
    print(f"Invalid API key: {e}")
except NetworkError as e:
    print(f"Network issue: {e}")
except APIError as e:
    print(f"API error (status {e.status_code}): {e}")
except PromptDefendError as e:
    print(f"General error: {e}")

Response Object

The scan() method returns a ScanResult object with the following properties:

Methods

• to_dict() - Convert the result to a dictionary

API Reference

PromptDefend Class

Constructor

PromptDefend(
    api_key: str,                    # Required: Your API key
    base_url: str = None,            # Optional: Custom API base URL
    timeout: int = 30                # Optional: Request timeout in seconds
)

Methods

Requirements

• Python 3.8+
• requests library

License

This SDK is proprietary software. See LICENSE for details.

Support

• 📚 Documentation
• 📧 Email Support
• 🌐 Website

© 2026 Prompt Defend. All Rights Reserved.