The MMDC interface for data access. The SED can be retrieved by providing the source name or a sky position in the “Source Name” field. In the top right, an example of part of the data retrieved from MMDC is shown. The interface allows users to filter data based on time (“Time Filtering”) and customize the display with various options for axis adjustments (“Plot Options”). Under the energy band section, the catalogs from which the data were retrieved are listed (an example is shown at the bottom right). The bottom panel under the SED provides source information, including RA/Dec coordinates, galactic coordinates, redshift, and the estimated peak frequency of the low-energy synchrotron component (W-peak; P. Giommi et al. 2024).