LongTracer

Detect hallucinations in LLM responses. Verify every claim against source documents using hybrid STS + NLI. Works with LangChain, LlamaIndex, or any RAG pipeline. pip install longtracer. Maintained by ENDEVSOLS on GitHub, where it has earned 36 stars from the community.

It's actively developed around ai-safety, claim-verification, gaurdrail, and is a solid reference for anyone building with these tools.