from flask import Flask, request, jsonify

app = Flask(__name__)

@app.route('/modify_json', methods=['POST'])
def modify_json():
    # Get JSON input from the request
    input_json = request.get_json()

    # Modify the JSON (for demonstration, simply adding a key 'modified' with value True)
    input_json['modified'] = True

    # Return modified JSON as response
    return jsonify(input_json)

if __name__ == '__main__':
    app.run(debug=True)  # Run the app in debug mode