Hi @karbotilne5 and thanks for your query. Yes, the Tobii Stream Engine API will work with the Tobii PCEye Mini eye tracker.
However, depending on your project intentions, you may need to purchase a analytical use licence if you are not creating applications for user interaction.
More details about this @ https://transparency.tobii.com/
Please do let us know if we can provide any further information. Best Wishes.