  We present the newly developed broadband transient monitor using the Swift
Burst Alert Telescope (BAT) and the MAXI Gas Slit Camera (GSC) data. Our
broadband transient monitor monitors high energy transient sources from 2 keV
to 200 keV in seven energy bands by combining the BAT (15-200 keV) and the GSC
(2-20 keV) data. Currently, the daily and the 90-minute (one orbit) averaged
light curves are available for 106 high energy transient sources. Our broadband
transient monitor is available to the public through our web server,
http://yoshidalab.mydns.jp/bat_gsc_trans_mon/, for a wider use by the
community. We discuss the daily sensitivity of our monitor and possible future
improvements to our pipeline.
