API, Application Programming Interface; CEMBIO, Centre for Metabolomics and Bioanalysis; CER, Ceramide; CMM, Ceu Mass Mediator; CMM-ES, CMM Expert System; CS, Composite Spectrum; DG, Diradylglycerols; EM, Experimental Mass; Explanations in natural language; FA, Fatty Acid; HMDB, Human Metabolome Database; InChI, IUPAC International Chemical Identifier; Knowledge based system; LAS, Lipid Identification System; LPC, Lysoglycerophosphocholine; LPE, Lysoglycerophosphoethanolamine; LPG, Lysoglycerophosphoglycerol; LPS, Lysoglycerophosphoserine; Lipid annotation; MB, MassBank; MG, Monoradylglycerols; MZ, MZedDB; PA, Glycerophosphate; PC, Glycerophosphocholine; PE, Glycerophosphoethanolamine; PG, Glycerophosphoglycerol; PI, Glycerophosphoinositol; PS, Glycerophosphoserine; REST API service; REST, REpresentational State Transfer; RT, Retention Time; SM, Phosphosphingolipid; ST, Sterol (Cholesterol ester); TG, Triradylglycerols