Review the overall Portfolio Performance
Upload the *.xml file for example to the Market System Analyzer. If you already have your other trading strategies loaded in Market System Analyzer you can check the performance of the whole portfolio and not just the single strategy alone.
When doing so I especially look at one parameter: the not profit / drawdown ratio for the strategy based on its original trades and also for a Monte Carlo Simulation. Only if at least one of these two parameters improves, I will include the trading strategy into my portfolio, since my main target is always to reduce drawdowns.
If you want to verify a trading strategy you will need to check out the developer, the historic and live performance of the strategy and how such a strategy fits into your current portfolio. Only if all these elements are working out to your satisfaction you should consider licensing a trading strategy.
In case you wonder whether algorithmic trading can work at all, you can also check out a respective post here.