Show HN: DriftGuard – response drift detection for LangGraph agents

Category: library

Tags: llm, drift-detection, langchain, python, embedding

Score: 7.0/10 (Innovation: 6, Technical: 7, Documentation: 9, Utility: 6)

DriftGuard is a Python library for detecting when LLM responses drift outside their intended domain using embedding-based similarity comparison. It offers multiple integration patterns for LangChain and LangGraph agents, including non-blocking callbacks, blocking guards, and async support, making it a practical tool for maintaining domain safety in LLM applications.

Target audience: backend devs

Repository: https://github.com/vinerya/driftGuard · Python · MIT

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