Clef: our open-source decision models

Clef is an open-source decision model framework developed by Cloudflare. It allows developers to create and deploy models that make decisions based on data. The framework is designed to be flexible and modular, enabling users to integrate different decision-making components. Clef's architecture is based on the idea of 'cells' that can be combined to create complex decision models. These cells can be thought of as individual functions or operations that can be strung together to form a decision-making pipeline. The framework provides a range of pre-built cells, including those for data filtering, aggregation, and transformation, as well as cells for machine learning model integration. Clef is designed to make it easy for developers to create and deploy decision models without requiring extensive expertise in machine learning or data science. The framework is also extensible, allowing users to create and share their own custom cells.