The EIDA Toolkit SDK 2.8.5 is a software development kit developed by the European Seismological Commission (ESC) to support the creation of seismological data products. The toolkit provides a set of libraries, APIs, and tools to facilitate the integration of data from various sources, such as seismometers, accelerometers, and other data providers. The software is designed to help developers create applications that can efficiently manage, process, and disseminate large datasets.