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How to Build a Voice Agent with LangChain

A voice-controlled executive assistant built with LangChain's create_agent — a multi-agent system that checks Gmail, drafts replies, researches the web, and writes to Notion, all wired up over MCP.

LangChain Certification Prep

Hands-on prep for the LangChain/LangGraph certification — taught by building one real project end-to-end, Aria, an AI executive assistant. This is repo takes project-based learning for LangChain foundation.

LangGraph Routing Strategies

Four routing strategies for LangGraph agents — LLM-based, embedding-based, rule-based, and ML model-based — compared side by side on a realistic customer service use case.

NVIDIA Object-Oriented Agents Demo

Standalone demos for NVIDIA's NOOA framework, where agents are Python classes and methods act as tools without a JSON tool-schema round trip.