@pkr2 If you are using GraphStudio pathfinding is built in. If you go to “Explore Graph” then click on the network looking icon you will find the path finding features. Documentation on that feature https://docs.tigergraph.com/ui/graphstudio/explore-graph#TigerGraphGraphStudioUIGuide-ExploreGraph
You can also access hit that path finding features from the built in REST++ endpoints. See here for examples: Built-in Endpoints :: Docs