AMPEL schema for the SNGuess channel. T0: top row (green parallelograms) show possible loader classes, each of which provides LSST like alerts to the alert filter (cyan diamond). T2: alerts which pass the filter stage are stored into the database and augment/compute operations (rectangles) scheduled for execution. T2RiseDeclineState is the base class for T2MultiXGBClassifier, responsible for the feature extraction. T3: the output stage (blue ovals) reacts based on the operations, either through collecting data for local printout or for the submission of classification reports. Arrows show information flow. The solid line path shows the units included in the demonstration job file (Section 6 and Appendix C). The dashed path corresponds to the schema executed during the ELAsTiCC challenge.