Jev LangChain

A small FastAPI demo that triages customer support tickets with Jev as the decision layer: one request returns typed answers for department, urgency, refund intent and human-review need, while Python rules route and LangChain can draft a reply.

LangChain's post on putting Jev inside agent loops: it introduces System One models, shows TypeSafeClassifier calls in Python, and demonstrates a model-routing middleware, with tool output kept out of the classifier's input.

A semantic cache for LLM queries, fully integrated with LangChain and llama_index. Zilliz's cache integrates TypeSafe Jev Noul checks to evaluate cache hit freshness and time-dependent query validity, cutting repeated requests and API cost.