Having been located at Tatsuno-guchi, outside the Edo-jo Castle, the institution handled important government issues, suits among Daimyo (Japanese feudal lords) and Hatamoto (direct retainers of the Edo Shogunate), and trials for cross-jurisdictional problems that involved one or more Bugyo (the shogunate administrators).
江戸城外の辰ノ口にあり、幕政の重要事項や大名旗本の訴訟、複数の奉行の管轄にまたがる問題の裁判を行なった機関である。