With the Open Science Framework (OSF) REST API developers can access users, projects, components, logs, and files from the Open Science Framework. The Open Science Framework is a free, open-source service maintained by the Center for Open Science. The OSF serves as a repository and archive for study designs, materials, data, manuscripts, or anything else associated with research during the research process. Every project and file on the OSF has a permanent unique identifier, and every registration (a permanent, time-stamped version of projects and files) can be assigned a DOI/ARK. The OSF can be used to measure impact by monitoring the traffic to projects and files made public. With the OSF, researchers have full control of what parts of research are public and what remains private.