CopilotKit

syntactic sugar for langchain

Directly Connecting Python to LLMs - Dataclasses & Interfaces <-> LLMs

UQLM: Uncertainty Quantification for Language Models, is a Python library for LLM hallucination detection using state-of-the-art uncertainty quantification techniques 

Capability-based authorization for AI agents. Task-scoped tokens with offline verification, proof-of-possession binding, and native LangChain/LangGraph integration.