Refcat/LangChain/Adding an evaluatorUI reference · WebApplicationApplication · Adding an evaluator · LangChainAdded to Refcat Oct 16, 2026PatternsAdd & CreateComponentsbuttoninputradiotabmodalExplore real product flowsOnboardingFiltering runs by costSearching LangSmithAdding an evaluatorImporting a datasetSwitching to LangSmithRun detailCreating an agent from a templateAdding an applicationAdding a run to a datasetTracingAdding a feedbackExplore the full catalog