The recent discovery of MOF glasses through melting and quenching may help solve this problem as they maintain many properties of the parent MOF crystals while also allowing the processing into grain-boundary-free bulk (>1 cm) objects through hot forming techniques . However, to realize processable MOFs, a key challenge is to tune the viscosity-temperature curve, which is essential for shaping MOF glasses into desired shapes and configurations, beyond mere melting or sintering techniques . Another significant hurdle is the limited number of meltable MOF crystals, as the melting temperature of many MOFs is higher than their decomposition temperature (Tm>Td) . This restricts the continuous composition tuning of MOF glasses. Currently, the number of known MOF glasses is <200, in stark contrast to the >100,000 known MOF crystals . In comparison, there are more than 200,000 known oxide glass compositions in the SciGlass database, compared to ~70,000 oxide crystals . This difference is ascribed to the inherent feature of oxide glasses to be formed in a nearly infinite number of compositions through mixing of pure glass network formers (SiO2, GeO2, B2O3, etc.) with so-called 'modifiers' (e.g., alkali, alkaline earth, and transition metal oxides) . These modifiers typically depolymerize the oxide network structure, allowing continuous modification of glass structure and properties. Despite the success of using modifiers in oxide as well as sulfide, fluoride, and chalcogenide glasses 1 , no well-established modification platform exists for MOF glasses.