Basic types byte boolean (0 = false, 1 = true) integer (int16, uint16, int32, uint32, int64 and uint64) double (IEEE 754 double) string (UTF-8 string) Compound types array (contains elements of the same type) struct (contains one or more complete types) dictionary entry (contains a key (basic type) and a value, must be part of an array) variant (contains a type and a value) object path (a string representation of a DBUS Object)