Follow the bolt line up the right side of the SE corner of Sentinel Rock. If you take the path of most resistance and don't use the cracks to the left or right of the bolts then this will feel like 9+/10- with the crux between bolts 1 and 2. Starting up the thin hand crack to the left of the bolts lowers the grade to 5.8. At the fourth bolt, this climb joins the route Nothing But Fun. Apparently this was originally done without the bolts and checked in at 5.8 PG13.
This route lies 10' right of Nothing But Fun but starts from a platform 15' higher. Either (1) follow the approach directions for NBF then continue further up the gulley to access the upper platform or (2) follow the approach for the route Sentinel North which is far and away a much easier approach..
5 bolts plus anchors at the top