Generally, researchers should disclose use of Heureka's tools in the Acknowledgments or Methods section of their work. This can include identifying Heureka Labs as the platform used and the nature of the use (e.g., data analysis, literature review, hypothesis generation, experimental design support). Here is suggested language for such citations.
"The author thanks Heureka Labs for the use of their tools to [describe nature of use, e.g., supporting the analysis and initial interpretation of our data] for this project. The output was used to [describe application], and all content has been reviewed and verified."