[jeffreyip]

You sure can! A few lines of code is all it takes, and a few simple rules to follow as shown here: https://docs.confident-ai.com/guides/guides-building-custom-...

If you're using DSPy, you can also include it directly in this custom metric from the link above. It's hard for me to say 100% if there are advantages of doing this within DeepEval, but 8/10 times running evals in our ecosystem brings you more benefits than drawbacks. Let me know if you have trouble setting up!