Reality Defender SDK for Python

A Python SDK for the Reality Defender API to detect deepfakes and manipulated media.

Installation

# Using pip
pip install realitydefender

# Using poetry
poetry add realitydefender

Getting Started

First, you need to obtain an API key from the Reality Defender Platform.

Asynchronous Approach

This approach uses direct polling to wait for the analysis results.

import asyncio
from realitydefender import RealityDefender


async def main():
    # Initialize the SDK with your API key
    print("Initializing Reality Defender SDK...")
    rd = RealityDefender(api_key="your-api-key")

    # Upload a file for analysis
    print("Uploading file for analysis...")
    response = await rd.upload(file_path="/path/to/your/file.jpg")
    request_id = response["request_id"]
    print(f"File uploaded successfully. Request ID: {request_id}")

    # Get results by polling until completion
    print("Waiting for analysis results...")
    result = await rd.get_result(request_id)
    print("Analysis complete!")

    # Process the results
    print("\nResults:")
    print(f"Status: {result['status']}")
    print(f"Score: {result['score']}")

    # List model results
    print("\nModel details:")
    for model in result["models"]:
        print(f"{model['name']}: {model['status']} (Score: {model['score']})")


# Run the async function
asyncio.run(main())

Event-Based Approach

This approach uses event handlers to process results when they become available.

import asyncio
from realitydefender import RealityDefender


async def main():
    # Initialize the SDK
    print("Initializing Reality Defender SDK...")
    rd = RealityDefender(api_key="your-api-key")

    # Set up event handlers
    print("Setting up event handlers...")
    rd.on("result", lambda result: print(f"Result received: {result['status']} (Score: {result['score']})"))
    rd.on("error", lambda error: print(f"Error occurred: {error.message}"))

    # Upload and start polling
    print("Uploading file for analysis...")
    response = await rd.upload(file_path="/path/to/your/file.jpg")
    request_id = response["request_id"]
    print(f"File uploaded successfully. Request ID: {request_id}")

    print("Starting to poll for results...")
    await rd.poll_for_results(response["request_id"])
    print("Polling complete!")


# Run the async function
asyncio.run(main())

Architecture

The SDK is designed with a modular architecture for better maintainability and testability:

• Client: HTTP communication with the Reality Defender API
• Core: Configuration, constants, and callbacks
• Detection: Media upload and results processing
• Models: Data classes for API responses and SDK interfaces
• Utils: File operations and helper functions

API Reference

The Reality Defender SDK uses asynchronous operations throughout.

Initialize the SDK

rd = RealityDefender(
    api_key="your-api-key",  # Required: Your API key
)

Upload Media for Analysis

# Must be called from within an async function
response = await rd.upload(file_path="/path/to/file.jpg")  # Required: Path to the file to analyze
)

Returns: {"request_id": str, "media_id": str}

Get Results via Polling

# Must be called from within an async function
# This will poll until the analysis is complete
result = await rd.get_result(request_id)

Returns a dictionary with detection results:

{
    "status": str,  # Overall status (e.g., "MANIPULATED", "AUTHENTIC")
    "score": float,  # Overall confidence score (0-1)
    "models": [  # Array of model-specific results
        {
            "name": str,  # Model name
            "status": str,  # Model-specific status
            "score": float  # Model-specific score (0-1)
        }
    ]
}

Event-Based Results

# Set up event handlers before polling
rd.on("result", callback_function)  # Called when results are available
rd.on("error", error_callback_function)  # Called if an error occurs

# Start polling (must be called from within an async function)
await rd.poll_for_results(request_id)

# Clean up when done (must be called from within an async function)
await rd.cleanup()

Error Handling

The SDK raises exceptions for various error scenarios:

try:
    result = rd.upload(file_path="/path/to/file.jpg")
except RealityDefenderError as error:
    print(f"Error: {error.message} ({error.code})")
    # Error codes: 'unauthorized', 'server_error', 'timeout', 
    # 'invalid_file', 'upload_failed', 'not_found', 'unknown_error'

Supported file types and size limits

There is a size limit for each of the supported file types.

File Type	Extensions	Size Limit (bytes)	Size Limit (MB)
Video	.mp4, .mov	262,144,000	250 MB
Image	.jpg, .png, .jpeg, .gif, .webp	52,428,800	50 MB
Audio	.flac, .wav, .mp3, .m4a, .aac, .alac, .ogg	20,971,520	20 MB
Text	.txt	5,242,880	5 MB

Supported social media platforms

The Reality Defender API supports analysis of media from the following social media platforms:

• Facebook
• Instagram
• Twitter
• YouTube
• TikTok

Examples

See the examples directory for more detailed usage examples.

Running Examples

To run the example code in this SDK, follow these steps:

# Navigate to the python directory
cd python

# Install the package in development mode
pip install -e .

# Set your API key
export REALITY_DEFENDER_API_KEY='<your-api-key>'

# Run the example
python examples/basic_usage.py

The example code demonstrates how to upload a sample image and process the detection results.